Linux Checkpoint-Restart - v19

Linux Checkpoint-Restart - v19

[Oren Laadan]

Hi Andrew,

We've put a stake in the ground for our next set of checkpoint/restart
patches, v19. It has some great new stuff, and we put extra effort to
address your concerns. We would like to have the code included in -mm
for wider feedback and testing.

This one is able to checkpoint/restart screen and vnc sessions, and
live-migrate network servers between hosts. It also adds support for
x86-64 (in addition to x86-32, s390x and powerpc). It is rebased to
kernel 2.6.33-rc8.

Since one of your main concerns was about what is not yet implemented
and how complicated or ugly it will be to support that, we've put up
a wiki page to address that. In it there is a simple table that lists
what is not implemented and the anticipated solution impact, and for
some entries a link to more details.

The page is here:   http://ckpt.wiki.kernel.org/index.php/Checklist

We want to stress that the patchset is already very useful as-is. We
will keep working to implement more features cleanly. Some features we
are working on include network namespaces and device configurations,
mounts and mounts namespaces, and file locks. Should a complicated
feature prove hard to implement, users have alternatives systems like
kvm, until we manage to come up with a clean solution.

We believe that maintenance is best addressed through testing. We now
have a comprehensive test-suite to automatically find regressions.
In addition, we ran LTP and the results are the same with CHECKPOINT=n
and =y.

If desired we'll send the whole patchset to lkml, but the git trees
can be seen at:

   kernel:       http://www.linux-cr.org/git/?p=linux-cr.git;a=summary
   user tools:   http://www.linux-cr.org/git/?p=user-cr.git;a=summary
   tests suite:  http://www.linux-cr.org/git/?p=tests-cr.git;a=summary

Thanks,

Application checkpoint/restart team

Re: Linux Checkpoint-Restart - v19

[Andrew Morton]

On Mon, 22 Feb 2010 18:17:00 -0500
Oren Laadan <orenl@cs.columbia.edu> wrote:

> Hi Andrew,
> 
> We've put a stake in the ground for our next set of checkpoint/restart
> patches, v19. It has some great new stuff, and we put extra effort to
> address your concerns. We would like to have the code included in -mm
> for wider feedback and testing.
> 
> This one is able to checkpoint/restart screen and vnc sessions, and
> live-migrate network servers between hosts. It also adds support for
> x86-64 (in addition to x86-32, s390x and powerpc). It is rebased to
> kernel 2.6.33-rc8.
> 
> Since one of your main concerns was about what is not yet implemented
> and how complicated or ugly it will be to support that, we've put up
> a wiki page to address that. In it there is a simple table that lists
> what is not implemented and the anticipated solution impact, and for
> some entries a link to more details.
> 
> The page is here:   http://ckpt.wiki.kernel.org/index.php/Checklist

Does "Refuses to Checkpoint" mean that an attempt to checkpoint will
fail, return the failure to userspace and the system continues as
before?

> We want to stress that the patchset is already very useful as-is. We
> will keep working to implement more features cleanly. Some features we
> are working on include network namespaces and device configurations,
> mounts and mounts namespaces, and file locks. Should a complicated
> feature prove hard to implement, users have alternatives systems like
> kvm, until we manage to come up with a clean solution.
> 
> We believe that maintenance is best addressed through testing. We now
> have a comprehensive test-suite to automatically find regressions.
> In addition, we ran LTP and the results are the same with CHECKPOINT=n
> and =y.
> 
> If desired we'll send the whole patchset to lkml, but the git trees
> can be seen at:
> 
>    kernel:       http://www.linux-cr.org/git/?p=linux-cr.git;a=summary
>    user tools:   http://www.linux-cr.org/git/?p=user-cr.git;a=summary
>    tests suite:  http://www.linux-cr.org/git/?p=tests-cr.git;a=summary
> 

I'd suggest waiting until very shortly after 2.6.34-rc1 then please
send all the patches onto the list and let's get to work.

Re: Linux Checkpoint-Restart - v19

[Oren Laadan]

Andrew Morton wrote:
> On Mon, 22 Feb 2010 18:17:00 -0500
> Oren Laadan <orenl@cs.columbia.edu> wrote:
> 
>> Hi Andrew,
>>
>> We've put a stake in the ground for our next set of checkpoint/restart
>> patches, v19. It has some great new stuff, and we put extra effort to
>> address your concerns. We would like to have the code included in -mm
>> for wider feedback and testing.
>>
>> This one is able to checkpoint/restart screen and vnc sessions, and
>> live-migrate network servers between hosts. It also adds support for
>> x86-64 (in addition to x86-32, s390x and powerpc). It is rebased to
>> kernel 2.6.33-rc8.
>>
>> Since one of your main concerns was about what is not yet implemented
>> and how complicated or ugly it will be to support that, we've put up
>> a wiki page to address that. In it there is a simple table that lists
>> what is not implemented and the anticipated solution impact, and for
>> some entries a link to more details.
>>
>> The page is here:   http://ckpt.wiki.kernel.org/index.php/Checklist
> 
> Does "Refuses to Checkpoint" mean that an attempt to checkpoint will
> fail, return the failure to userspace and the system continues as
> before?

Yes.

Also, there is a mechanism in place to report the reason for the
failure (e.g. the offending resource) to the user.

> 
>> We want to stress that the patchset is already very useful as-is. We
>> will keep working to implement more features cleanly. Some features we
>> are working on include network namespaces and device configurations,
>> mounts and mounts namespaces, and file locks. Should a complicated
>> feature prove hard to implement, users have alternatives systems like
>> kvm, until we manage to come up with a clean solution.
>>
>> We believe that maintenance is best addressed through testing. We now
>> have a comprehensive test-suite to automatically find regressions.
>> In addition, we ran LTP and the results are the same with CHECKPOINT=n
>> and =y.
>>
>> If desired we'll send the whole patchset to lkml, but the git trees
>> can be seen at:
>>
>>    kernel:       http://www.linux-cr.org/git/?p=linux-cr.git;a=summary
>>    user tools:   http://www.linux-cr.org/git/?p=user-cr.git;a=summary
>>    tests suite:  http://www.linux-cr.org/git/?p=tests-cr.git;a=summary
>>
> 
> I'd suggest waiting until very shortly after 2.6.34-rc1 then please
> send all the patches onto the list and let's get to work.
> 

Sounds good -- will do.

Thanks,

Oren.

Re: Linux Checkpoint-Restart - v19

[Jiro SEKIBA]

Hi,

I'm trying to evaluate external checkpoint/restart with cr-v19 kernel.
However, when I restart, I got "Killed" message in stdout.
Do you have any tips or clue that are not in
Documentation/checkpoint/usage.txt ?

I'm using kernel pulled from
git://git.ncl.cs.columbia.edu/pub/git/linux-cr.git .
checkout tag named "ckpt-v19". Base distro is ubuntu 9.10.

I ran self checkpioint/restart sample program in Documentation/checkpint.
It works as written in usage.txt.
However, I can not make external checkpint/restart work properly.

I made a simple test program bellow and create checkpoint externally using
the program in Documentation/checkpoint/, it looks checkpoint file is
created properly.
However, when I ran self_restart < ckpt.image, I got "Killed" message.

Is there any extra configurations other than cgroup freezer and
checkpint/restart ?
Or any limitation other than closing stdout,err,in ?

what I did is following:

# mount -t cgroup -o freezer cgroup /cgroup
# mkdir /cgroup/0
..
# ./test &
# PID=$(ps | grep test | cut -f 2 -d' ')
# echo $PID > /cgroup/0/tasks
# sleep 3
# echo FROZEN > /cgroup/0/freezer.state
# ./checkpoint $PID > ckpt.image
# mv /tmp/test.out /tmp/test.out.orig
# cp /tmp/test.out.orig /tmp/test.out
# echo THAWED > /cgroup/0/freezer.state
# ./self_restart < ckpt.image
Killed

----- test.c -----
int main(void)
{
  FILE *fp;
  int i;

  close(0);
//  close(1);  // I got SEGV when I uncomment this line, when restarting
  close(2);

  fp = fopen("/tmp/test.out","w+");

  for(i=0;i<10;i++) {
    fprintf(fp,"%d\n",i);
    fflush(fp);
    sleep(1);
  }

  fclose(fp);
  return 0;
}
----- test.c -----

Thank you very much in advance

2010/2/23 Oren Laadan <orenl@cs.columbia.edu>:
> Hi Andrew,
>
> We've put a stake in the ground for our next set of checkpoint/restart
> patches, v19. It has some great new stuff, and we put extra effort to
> address your concerns. We would like to have the code included in -mm
> for wider feedback and testing.
>
> This one is able to checkpoint/restart screen and vnc sessions, and
> live-migrate network servers between hosts. It also adds support for
> x86-64 (in addition to x86-32, s390x and powerpc). It is rebased to
> kernel 2.6.33-rc8.
>
> Since one of your main concerns was about what is not yet implemented
> and how complicated or ugly it will be to support that, we've put up
> a wiki page to address that. In it there is a simple table that lists
> what is not implemented and the anticipated solution impact, and for
> some entries a link to more details.
>
> The page is here:   http://ckpt.wiki.kernel.org/index.php/Checklist
>
> We want to stress that the patchset is already very useful as-is. We
> will keep working to implement more features cleanly. Some features we
> are working on include network namespaces and device configurations,
> mounts and mounts namespaces, and file locks. Should a complicated
> feature prove hard to implement, users have alternatives systems like
> kvm, until we manage to come up with a clean solution.
>
> We believe that maintenance is best addressed through testing. We now
> have a comprehensive test-suite to automatically find regressions.
> In addition, we ran LTP and the results are the same with CHECKPOINT=n
> and =y.
>
> If desired we'll send the whole patchset to lkml, but the git trees
> can be seen at:
>
>  kernel:       http://www.linux-cr.org/git/?p=linux-cr.git;a=summary
>  user tools:   http://www.linux-cr.org/git/?p=user-cr.git;a=summary
>  tests suite:  http://www.linux-cr.org/git/?p=tests-cr.git;a=summary
>
> Thanks,
>
> Application checkpoint/restart team
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
>

Re: Linux Checkpoint-Restart - v19

[Oren Laadan]

Hi,

Thanks for taking the time to evaluate c/r. You may want to also
try the latest, which is (as of now) ckpt-v20-rc2.

In the future, please CC the containers mailing list for issues
related to c/r, at "containers@lists.linux-foundation.org".

Jiro SEKIBA wrote:
> Hi,
> 
> I'm trying to evaluate external checkpoint/restart with cr-v19 kernel.
> However, when I restart, I got "Killed" message in stdout.
> Do you have any tips or clue that are not in
> Documentation/checkpoint/usage.txt ?
> 
> I'm using kernel pulled from
> git://git.ncl.cs.columbia.edu/pub/git/linux-cr.git .
> checkout tag named "ckpt-v19". Base distro is ubuntu 9.10.
> 
> I ran self checkpioint/restart sample program in Documentation/checkpint.
> It works as written in usage.txt.
> However, I can not make external checkpint/restart work properly.
> 
> I made a simple test program bellow and create checkpoint externally using
> the program in Documentation/checkpoint/, it looks checkpoint file is
> created properly.
> However, when I ran self_restart < ckpt.image, I got "Killed" message.

If you take an external checkpoint, then you need to match it
with an external restart, as opposed to self_restart.

Otherwise, restarting with self_restart from a checkpoint that is
not a self-checkpoint can yield unexpected results.

Since you don't mention in your post, I don't know if you are using
the tools from user-cr. If not, then you should use 'checkpoint' and
'restart' tools from there. It is available from:
	git://git.ncl.cs.columbia.edu/pub/git/user-cr.git
(use the same branch as the one you used to linux-cr).

Once you have the tools compiled, and you checkpoint with the
'checkpoint' utility from there, you can restart with:
	restart -v < ckpt.image

Oren.

> 
> Is there any extra configurations other than cgroup freezer and
> checkpint/restart ?
> Or any limitation other than closing stdout,err,in ?
> 
> what I did is following:
> 
> # mount -t cgroup -o freezer cgroup /cgroup
> # mkdir /cgroup/0
> ..
> # ./test &
> # PID=$(ps | grep test | cut -f 2 -d' ')
> # echo $PID > /cgroup/0/tasks
> # sleep 3
> # echo FROZEN > /cgroup/0/freezer.state
> # ./checkpoint $PID > ckpt.image
> # mv /tmp/test.out /tmp/test.out.orig
> # cp /tmp/test.out.orig /tmp/test.out
> # echo THAWED > /cgroup/0/freezer.state
> # ./self_restart < ckpt.image
> Killed
> 
> ----- test.c -----
> int main(void)
> {
>   FILE *fp;
>   int i;
> 
>   close(0);
> //  close(1);  // I got SEGV when I uncomment this line, when restarting
>   close(2);
> 
>   fp = fopen("/tmp/test.out","w+");
> 
>   for(i=0;i<10;i++) {
>     fprintf(fp,"%d\n",i);
>     fflush(fp);
>     sleep(1);
>   }
> 
>   fclose(fp);
>   return 0;
> }
> ----- test.c -----
> 
> Thank you very much in advance
> 
> 2010/2/23 Oren Laadan <orenl@cs.columbia.edu>:
>> Hi Andrew,
>>
>> We've put a stake in the ground for our next set of checkpoint/restart
>> patches, v19. It has some great new stuff, and we put extra effort to
>> address your concerns. We would like to have the code included in -mm
>> for wider feedback and testing.
>>
>> This one is able to checkpoint/restart screen and vnc sessions, and
>> live-migrate network servers between hosts. It also adds support for
>> x86-64 (in addition to x86-32, s390x and powerpc). It is rebased to
>> kernel 2.6.33-rc8.
>>
>> Since one of your main concerns was about what is not yet implemented
>> and how complicated or ugly it will be to support that, we've put up
>> a wiki page to address that. In it there is a simple table that lists
>> what is not implemented and the anticipated solution impact, and for
>> some entries a link to more details.
>>
>> The page is here:   http://ckpt.wiki.kernel.org/index.php/Checklist
>>
>> We want to stress that the patchset is already very useful as-is. We
>> will keep working to implement more features cleanly. Some features we
>> are working on include network namespaces and device configurations,
>> mounts and mounts namespaces, and file locks. Should a complicated
>> feature prove hard to implement, users have alternatives systems like
>> kvm, until we manage to come up with a clean solution.
>>
>> We believe that maintenance is best addressed through testing. We now
>> have a comprehensive test-suite to automatically find regressions.
>> In addition, we ran LTP and the results are the same with CHECKPOINT=n
>> and =y.
>>
>> If desired we'll send the whole patchset to lkml, but the git trees
>> can be seen at:
>>
>>  kernel:       http://www.linux-cr.org/git/?p=linux-cr.git;a=summary
>>  user tools:   http://www.linux-cr.org/git/?p=user-cr.git;a=summary
>>  tests suite:  http://www.linux-cr.org/git/?p=tests-cr.git;a=summary
>>
>> Thanks,
>>
>> Application checkpoint/restart team
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at  http://www.tux.org/lkml/
>>
> 

Re: Linux Checkpoint-Restart - v19

[Jiro SEKIBA]

Hi,

Thank you for prompt reply!
Sorry that I didn't post to containers@lists.linux-foundation.org.

On 2010/03/16, at 7:55, Oren Laadan wrote:

> Hi,
> 
> Thanks for taking the time to evaluate c/r. You may want to also
> try the latest, which is (as of now) ckpt-v20-rc2.

Yeah, I'll eventually try to keep up with the latest,
but I just want to try the one  you think it's stable first anyway.

> In the future, please CC the containers mailing list for issues
> related to c/r, at "containers@lists.linux-foundation.org".
> 
> Jiro SEKIBA wrote:
>> Hi,
>> I'm trying to evaluate external checkpoint/restart with cr-v19 kernel.
>> However, when I restart, I got "Killed" message in stdout.
>> Do you have any tips or clue that are not in
>> Documentation/checkpoint/usage.txt ?
>> I'm using kernel pulled from
>> git://git.ncl.cs.columbia.edu/pub/git/linux-cr.git .
>> checkout tag named "ckpt-v19". Base distro is ubuntu 9.10.
>> I ran self checkpioint/restart sample program in Documentation/checkpint.
>> It works as written in usage.txt.
>> However, I can not make external checkpint/restart work properly.
>> I made a simple test program bellow and create checkpoint externally using
>> the program in Documentation/checkpoint/, it looks checkpoint file is
>> created properly.
>> However, when I ran self_restart < ckpt.image, I got "Killed" message.
> 
> If you take an external checkpoint, then you need to match it
> with an external restart, as opposed to self_restart.
> 
> Otherwise, restarting with self_restart from a checkpoint that is
> not a self-checkpoint can yield unexpected results.
> 
> Since you don't mention in your post, I don't know if you are using
> the tools from user-cr. If not, then you should use 'checkpoint' and
> 'restart' tools from there. It is available from:
> 	git://git.ncl.cs.columbia.edu/pub/git/user-cr.git
> (use the same branch as the one you used to linux-cr).
> 
> Once you have the tools compiled, and you checkpoint with the
> 'checkpoint' utility from there, you can restart with:
> 	restart -v < ckpt.image
> 

Thank you for the information.
Actually I was trying to create checkpoint in Document/checkpints.

Now, I tried with user-cr, compiled binary in the same tag (ckpt-v19).
Creating checkpoint  looks OK and restart -v shows it Success.  nice!
However, the contents in /tmp/test.out never get further,
it remains same as when created checkpoint.

I tried  "./restart -F /cgroup/0 -v --no-pidns < ckpt.image", got Success.
cat /cgroup/0/tasks tells that there is a process.
ps shows ./test.  So, it looks restarting.

# ps axuww |grep $(cat /cgroup/0/tasks )
root      7231  0.1  0.0   1588    64 pts/0    D    16:57   0:00 ./test
root      7238  0.0  0.1   2716   660 pts/1    R+   16:57   0:00 grep 7231

under the /proc, one file descriptor opened, and it is /tmp/test.out

#  ls -l /proc/$(cat /cgroup/0/tasks)/fd
total 0
lrwx------ 1 root root 64 Mar 16 16:58 0 -> /tmp/test.out

Nhh, it's close..

I found that when I mount cgroup with -o freezer, self_checkpoint won't work.
It worked even I didn't mount the cgroup.
Is it what you expect?

Thank you again for the help!
I'm feeling better to use the latest ..


> Oren.
> 
>> Is there any extra configurations other than cgroup freezer and
>> checkpint/restart ?
>> Or any limitation other than closing stdout,err,in ?
>> what I did is following:
>> # mount -t cgroup -o freezer cgroup /cgroup
>> # mkdir /cgroup/0
>> ..
>> # ./test &
>> # PID=$(ps | grep test | cut -f 2 -d' ')
>> # echo $PID > /cgroup/0/tasks
>> # sleep 3
>> # echo FROZEN > /cgroup/0/freezer.state
>> # ./checkpoint $PID > ckpt.image
>> # mv /tmp/test.out /tmp/test.out.orig
>> # cp /tmp/test.out.orig /tmp/test.out
>> # echo THAWED > /cgroup/0/freezer.state
>> # ./self_restart < ckpt.image
>> Killed
>> ----- test.c -----
>> int main(void)
>> {
>>  FILE *fp;
>>  int i;
>>  close(0);
>> //  close(1);  // I got SEGV when I uncomment this line, when restarting
>>  close(2);
>>  fp = fopen("/tmp/test.out","w+");
>>  for(i=0;i<10;i++) {
>>    fprintf(fp,"%d\n",i);
>>    fflush(fp);
>>    sleep(1);
>>  }
>>  fclose(fp);
>>  return 0;
>> }
>> ----- test.c -----
>> Thank you very much in advance
>> 2010/2/23 Oren Laadan <orenl@cs.columbia.edu>:
>>> Hi Andrew,
>>> 
>>> We've put a stake in the ground for our next set of checkpoint/restart
>>> patches, v19. It has some great new stuff, and we put extra effort to
>>> address your concerns. We would like to have the code included in -mm
>>> for wider feedback and testing.
>>> 
>>> This one is able to checkpoint/restart screen and vnc sessions, and
>>> live-migrate network servers between hosts. It also adds support for
>>> x86-64 (in addition to x86-32, s390x and powerpc). It is rebased to
>>> kernel 2.6.33-rc8.
>>> 
>>> Since one of your main concerns was about what is not yet implemented
>>> and how complicated or ugly it will be to support that, we've put up
>>> a wiki page to address that. In it there is a simple table that lists
>>> what is not implemented and the anticipated solution impact, and for
>>> some entries a link to more details.
>>> 
>>> The page is here:   http://ckpt.wiki.kernel.org/index.php/Checklist
>>> 
>>> We want to stress that the patchset is already very useful as-is. We
>>> will keep working to implement more features cleanly. Some features we
>>> are working on include network namespaces and device configurations,
>>> mounts and mounts namespaces, and file locks. Should a complicated
>>> feature prove hard to implement, users have alternatives systems like
>>> kvm, until we manage to come up with a clean solution.
>>> 
>>> We believe that maintenance is best addressed through testing. We now
>>> have a comprehensive test-suite to automatically find regressions.
>>> In addition, we ran LTP and the results are the same with CHECKPOINT=n
>>> and =y.
>>> 
>>> If desired we'll send the whole patchset to lkml, but the git trees
>>> can be seen at:
>>> 
>>> kernel:       http://www.linux-cr.org/git/?p=linux-cr.git;a=summary
>>> user tools:   http://www.linux-cr.org/git/?p=user-cr.git;a=summary
>>> tests suite:  http://www.linux-cr.org/git/?p=tests-cr.git;a=summary
>>> 
>>> Thanks,
>>> 
>>> Application checkpoint/restart team
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>> Please read the FAQ at  http://www.tux.org/lkml/
>>> 

Re: Linux Checkpoint-Restart - v19

[Serge E. Hallyn]

Quoting Jiro SEKIBA (jir@dependable-os.net):
> Hi,
> 
> Thank you for prompt reply!
> Sorry that I didn't post to containers@lists.linux-foundation.org.
> 
> On 2010/03/16, at 7:55, Oren Laadan wrote:
> 
> > Hi,
> > 
> > Thanks for taking the time to evaluate c/r. You may want to also
> > try the latest, which is (as of now) ckpt-v20-rc2.
> 
> Yeah, I'll eventually try to keep up with the latest,
> but I just want to try the one  you think it's stable first anyway.
> 
> > In the future, please CC the containers mailing list for issues
> > related to c/r, at "containers@lists.linux-foundation.org".
> > 
> > Jiro SEKIBA wrote:
> >> Hi,
> >> I'm trying to evaluate external checkpoint/restart with cr-v19 kernel.
> >> However, when I restart, I got "Killed" message in stdout.
> >> Do you have any tips or clue that are not in
> >> Documentation/checkpoint/usage.txt ?
> >> I'm using kernel pulled from
> >> git://git.ncl.cs.columbia.edu/pub/git/linux-cr.git .
> >> checkout tag named "ckpt-v19". Base distro is ubuntu 9.10.
> >> I ran self checkpioint/restart sample program in Documentation/checkpint.
> >> It works as written in usage.txt.
> >> However, I can not make external checkpint/restart work properly.
> >> I made a simple test program bellow and create checkpoint externally using
> >> the program in Documentation/checkpoint/, it looks checkpoint file is
> >> created properly.
> >> However, when I ran self_restart < ckpt.image, I got "Killed" message.
> > 
> > If you take an external checkpoint, then you need to match it
> > with an external restart, as opposed to self_restart.
> > 
> > Otherwise, restarting with self_restart from a checkpoint that is
> > not a self-checkpoint can yield unexpected results.
> > 
> > Since you don't mention in your post, I don't know if you are using
> > the tools from user-cr. If not, then you should use 'checkpoint' and
> > 'restart' tools from there. It is available from:
> > 	git://git.ncl.cs.columbia.edu/pub/git/user-cr.git
> > (use the same branch as the one you used to linux-cr).
> > 
> > Once you have the tools compiled, and you checkpoint with the
> > 'checkpoint' utility from there, you can restart with:
> > 	restart -v < ckpt.image
> > 
> 
> Thank you for the information.
> Actually I was trying to create checkpoint in Document/checkpints.
> 
> Now, I tried with user-cr, compiled binary in the same tag (ckpt-v19).
> Creating checkpoint  looks OK and restart -v shows it Success.  nice!
> However, the contents in /tmp/test.out never get further,
> it remains same as when created checkpoint.
> 
> I tried  "./restart -F /cgroup/0 -v --no-pidns < ckpt.image", got Success.
> cat /cgroup/0/tasks tells that there is a process.
> ps shows ./test.  So, it looks restarting.
> 
> # ps axuww |grep $(cat /cgroup/0/tasks )
> root      7231  0.1  0.0   1588    64 pts/0    D    16:57   0:00 ./test
> root      7238  0.0  0.1   2716   660 pts/1    R+   16:57   0:00 grep 7231
> 
> under the /proc, one file descriptor opened, and it is /tmp/test.out
> 
> #  ls -l /proc/$(cat /cgroup/0/tasks)/fd
> total 0
> lrwx------ 1 root root 64 Mar 16 16:58 0 -> /tmp/test.out
> 
> Nhh, it's close..
> 
> I found that when I mount cgroup with -o freezer, self_checkpoint won't work.
> It worked even I didn't mount the cgroup.
> Is it what you expect?

No, it is not.  Can you tell us more about exactly how it fails?

Maybe get the cr_tests (either from Oren's tree or from
git clone git://git.sr71.net/~hallyn/cr_tests.git), cd cr_test,
make, cd simple, run ./ckpt and send us the contents of
/tmp/log, dmesg, and ckptinfo -ve /tmp/out ?

> Thank you again for the help!
> I'm feeling better to use the latest ..

-serge

Re: Linux Checkpoint-Restart - v19

[Jiro SEKIBA]

[-- Attachment #1: Type: text/plain, Size: 4849 bytes --]

Hi,
On 2010/03/18, at 5:55, Serge E. Hallyn wrote:

> Quoting Jiro SEKIBA (jir@dependable-os.net):
>> Hi,
>> 
>> Thank you for prompt reply!
>> Sorry that I didn't post to containers@lists.linux-foundation.org.
>> 
>> On 2010/03/16, at 7:55, Oren Laadan wrote:
>> 
>>> Hi,
>>> 
>>> Thanks for taking the time to evaluate c/r. You may want to also
>>> try the latest, which is (as of now) ckpt-v20-rc2.
>> 
>> Yeah, I'll eventually try to keep up with the latest,
>> but I just want to try the one  you think it's stable first anyway.
>> 
>>> In the future, please CC the containers mailing list for issues
>>> related to c/r, at "containers@lists.linux-foundation.org".
>>> 
>>> Jiro SEKIBA wrote:
>>>> Hi,
>>>> I'm trying to evaluate external checkpoint/restart with cr-v19 kernel.
>>>> However, when I restart, I got "Killed" message in stdout.
>>>> Do you have any tips or clue that are not in
>>>> Documentation/checkpoint/usage.txt ?
>>>> I'm using kernel pulled from
>>>> git://git.ncl.cs.columbia.edu/pub/git/linux-cr.git .
>>>> checkout tag named "ckpt-v19". Base distro is ubuntu 9.10.
>>>> I ran self checkpioint/restart sample program in Documentation/checkpint.
>>>> It works as written in usage.txt.
>>>> However, I can not make external checkpint/restart work properly.
>>>> I made a simple test program bellow and create checkpoint externally using
>>>> the program in Documentation/checkpoint/, it looks checkpoint file is
>>>> created properly.
>>>> However, when I ran self_restart < ckpt.image, I got "Killed" message.
>>> 
>>> If you take an external checkpoint, then you need to match it
>>> with an external restart, as opposed to self_restart.
>>> 
>>> Otherwise, restarting with self_restart from a checkpoint that is
>>> not a self-checkpoint can yield unexpected results.
>>> 
>>> Since you don't mention in your post, I don't know if you are using
>>> the tools from user-cr. If not, then you should use 'checkpoint' and
>>> 'restart' tools from there. It is available from:
>>> 	git://git.ncl.cs.columbia.edu/pub/git/user-cr.git
>>> (use the same branch as the one you used to linux-cr).
>>> 
>>> Once you have the tools compiled, and you checkpoint with the
>>> 'checkpoint' utility from there, you can restart with:
>>> 	restart -v < ckpt.image
>>> 
>> 
>> Thank you for the information.
>> Actually I was trying to create checkpoint in Document/checkpints.
>> 
>> Now, I tried with user-cr, compiled binary in the same tag (ckpt-v19).
>> Creating checkpoint  looks OK and restart -v shows it Success.  nice!
>> However, the contents in /tmp/test.out never get further,
>> it remains same as when created checkpoint.
>> 
>> I tried  "./restart -F /cgroup/0 -v --no-pidns < ckpt.image", got Success.
>> cat /cgroup/0/tasks tells that there is a process.
>> ps shows ./test.  So, it looks restarting.
>> 
>> # ps axuww |grep $(cat /cgroup/0/tasks )
>> root      7231  0.1  0.0   1588    64 pts/0    D    16:57   0:00 ./test
>> root      7238  0.0  0.1   2716   660 pts/1    R+   16:57   0:00 grep 7231
>> 
>> under the /proc, one file descriptor opened, and it is /tmp/test.out
>> 
>> #  ls -l /proc/$(cat /cgroup/0/tasks)/fd
>> total 0
>> lrwx------ 1 root root 64 Mar 16 16:58 0 -> /tmp/test.out
>> 
>> Nhh, it's close..
>> 
>> I found that when I mount cgroup with -o freezer, self_checkpoint won't work.
>> It worked even I didn't mount the cgroup.
>> Is it what you expect?
> 
> No, it is not.  Can you tell us more about exactly how it fails?
> 

OK, I've checked differences of dmesg when self_restart does well and doesn't.
When it goes well, the filename is /tmp/cr-self.out

[  401.522556] [2307:2307:c/r:ckpt_read_fname:571] read filename '/tmp/cr-self.out'
[  401.522558] [2307:2307:c/r:restore_open_fname:594] fname '/tmp/cr-self.out' flags 0x2

However, when the contents of file remains, filename is /tmp/cr-self.out.org,
which is , of course, the one of original file binding to the original process.

[ 1088.414250] [2951:2951:c/r:ckpt_read_fname:571] read filename '/tmp/cr-self.out.orig'
[ 1088.414253] [2951:2951:c/r:restore_open_fname:594] fname '/tmp/cr-self.out.orig' flags 0x2

I can not reproduce yet, but at least cgroup freezer option won't affect like I mentioned.
Sorry that it might confuse you.

I still can not restart of external checkpoint.
I'll try to v20 next time.

> Maybe get the cr_tests (either from Oren's tree or from
> git clone git://git.sr71.net/~hallyn/cr_tests.git), cd cr_test,
> make, cd simple, run ./ckpt and send us the contents of
> /tmp/log, dmesg, and ckptinfo -ve /tmp/out ?

I think it runs OK, but send it in case.
/tmp/log was empty by the way.

thanks

>> Thank you again for the help!
>> I'm feeling better to use the latest ..
> 
> -serge

[-- Attachment #2: ckptinfo-ve.log --]
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[-- Attachment #3: dmesg --]
[-- Type: application/octet-stream, Size: 77214 bytes --]

+++ dmesg.1	2010-03-19 22:02:06.349101828 +0900
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+[ 1774.609736] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 1784 lprid 1752 segsz 393216 mlock -1
+[ 1774.609739] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 8
+[ 1774.609741] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.609748] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.609750] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.609753] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.609755] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.609757] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.609759] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.609761] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.609763] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.609765] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.609767] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.609769] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.609771] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.609964] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.609966] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.609968] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.609970] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.609972] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.609974] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.609976] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.609978] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.609980] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.609982] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.609984] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x21
+[ 1774.609986] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x22
+[ 1774.609988] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x24
+[ 1774.609990] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x25
+[ 1774.609992] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x27
+[ 1774.609994] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x28
+[ 1774.609997] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2a
+[ 1774.609998] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2b
+[ 1774.610001] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2d
+[ 1774.610003] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2e
+[ 1774.610005] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x30
+[ 1774.610007] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x31
+[ 1774.610009] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x33
+[ 1774.610011] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x34
+[ 1774.610013] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x36
+[ 1774.610015] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x37
+[ 1774.610017] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x39
+[ 1774.610019] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3a
+[ 1774.610021] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3c
+[ 1774.610023] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3d
+[ 1774.610025] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3f
+[ 1774.610027] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x40
+[ 1774.610029] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x42
+[ 1774.610031] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x43
+[ 1774.610033] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x45
+[ 1774.610035] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x46
+[ 1774.610041] [3326:3326:c/r:checkpoint_memory_contents:458] collected 48 pages
+[ 1774.610043] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.610049] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 196808
+[ 1774.610636] [3326:3326:c/r:pgarr_release_pages:102] total pages 48
+[ 1774.610640] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.610645] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 9 first 1
+[ 1774.610649] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 1784 lprid 1752 segsz 393216 mlock -1
+[ 1774.610651] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 9
+[ 1774.610653] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.610658] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.610660] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.610662] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.610664] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.610666] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.610668] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.610670] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.610672] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.610674] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.610676] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.610678] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.610680] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.610683] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.610685] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.610687] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.610689] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.610691] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.610693] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.610695] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.610697] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.610707] [3326:3326:c/r:checkpoint_memory_contents:458] collected 20 pages
+[ 1774.610710] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.610714] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 82008
+[ 1774.610874] [3326:3326:c/r:pgarr_release_pages:102] total pages 20
+[ 1774.610877] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.610882] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 10 first 1
+[ 1774.610886] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2049 lprid 1795 segsz 393216 mlock -1
+[ 1774.610888] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 10
+[ 1774.610891] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.610895] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
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+[ 1774.610906] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
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+[ 1774.610914] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.610916] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.610918] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.610920] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.610922] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.610924] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.610926] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.610929] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.610931] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.610933] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
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+[ 1774.610939] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.610941] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x21
+[ 1774.610951] [3326:3326:c/r:checkpoint_memory_contents:458] collected 23 pages
+[ 1774.610953] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.610957] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 94308
+[ 1774.611685] [3326:3326:c/r:pgarr_release_pages:102] total pages 23
+[ 1774.611688] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.611694] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 11 first 1
+[ 1774.611697] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2035 lprid 2125 segsz 393216 mlock -1
+[ 1774.611700] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 11
+[ 1774.611702] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.611707] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
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+[ 1774.611721] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
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+[ 1774.611733] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
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+[ 1774.611782] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x26
+[ 1774.611784] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x27
+[ 1774.611786] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x28
+[ 1774.611788] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x29
+[ 1774.611790] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2a
+[ 1774.611792] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2b
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+[ 1774.611798] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2e
+[ 1774.611800] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2f
+[ 1774.611802] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x30
+[ 1774.611804] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x31
+[ 1774.611806] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x32
+[ 1774.611808] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x33
+[ 1774.611810] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x34
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+[ 1774.611845] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x46
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+[ 1774.611851] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x49
+[ 1774.611853] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4a
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+[ 1774.611895] [3326:3326:c/r:checkpoint_memory_contents:458] collected 96 pages
+[ 1774.611897] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.611902] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 393608
+[ 1774.621228] [3326:3326:c/r:pgarr_release_pages:102] total pages 96
+[ 1774.621235] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.621244] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 12 first 1
+[ 1774.621249] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 1898 lprid 1795 segsz 393216 mlock -1
+[ 1774.621251] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 12
+[ 1774.621253] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.621259] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.621261] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.621264] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.621266] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.621269] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.621270] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.621273] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.621275] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.621277] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.621279] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.621281] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.621283] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.621286] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.621288] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.621290] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.621292] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.621294] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.621296] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.621298] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.621300] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.621302] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.621304] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.621306] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x21
+[ 1774.621308] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x22
+[ 1774.621311] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x24
+[ 1774.621312] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x25
+[ 1774.621315] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x27
+[ 1774.621317] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x28
+[ 1774.621319] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2a
+[ 1774.621321] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2b
+[ 1774.621323] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2d
+[ 1774.621325] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2e
+[ 1774.621327] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x30
+[ 1774.621329] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x31
+[ 1774.621331] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x33
+[ 1774.621333] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x34
+[ 1774.621335] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x36
+[ 1774.621337] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x37
+[ 1774.621339] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x39
+[ 1774.621341] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3a
+[ 1774.621343] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3c
+[ 1774.621345] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3d
+[ 1774.621347] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3f
+[ 1774.621349] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x40
+[ 1774.621352] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x42
+[ 1774.621353] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x43
+[ 1774.621356] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x45
+[ 1774.621358] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x46
+[ 1774.621363] [3326:3326:c/r:checkpoint_memory_contents:458] collected 48 pages
+[ 1774.621365] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.621370] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 196808
+[ 1774.623005] [3326:3326:c/r:pgarr_release_pages:102] total pages 48
+[ 1774.623009] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.623015] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 13 first 1
+[ 1774.623019] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 1938 lprid 1795 segsz 393216 mlock -1
+[ 1774.623021] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 13
+[ 1774.623024] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.623028] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.623031] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.623033] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.623035] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.623037] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.623040] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.623042] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.623044] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.623046] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.623048] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.623050] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.623053] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.623056] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.623058] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.623060] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.623062] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.623064] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.623067] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.623069] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.623071] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.623073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.623075] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.623085] [3326:3326:c/r:checkpoint_memory_contents:458] collected 22 pages
+[ 1774.623088] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.623092] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 90208
+[ 1774.623453] [3326:3326:c/r:pgarr_release_pages:102] total pages 22
+[ 1774.623456] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.623462] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 14 first 1
+[ 1774.623465] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 1988 lprid 2007 segsz 393216 mlock -1
+[ 1774.623467] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 14
+[ 1774.623470] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.623474] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.623476] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.623479] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.623481] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.623483] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.623485] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.623487] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.623489] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.623491] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.623493] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.623495] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.623497] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.623499] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.623501] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.623504] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.623506] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.623508] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.623510] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.623512] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.623514] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.623516] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.623518] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.623528] [3326:3326:c/r:checkpoint_memory_contents:458] collected 22 pages
+[ 1774.623530] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.623534] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 90208
+[ 1774.623790] [3326:3326:c/r:pgarr_release_pages:102] total pages 22
+[ 1774.623793] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.623798] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 15 first 1
+[ 1774.623802] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2034 lprid 2186 segsz 393216 mlock -1
+[ 1774.623804] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 15
+[ 1774.623806] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.623811] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.623813] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.623815] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.623817] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.623820] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.623822] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.623824] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.623826] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.623828] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.623830] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.623832] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.623834] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.623837] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.623839] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.623841] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.623843] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.623845] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.623847] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.623849] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.623851] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.623853] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.623855] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.623867] [3326:3326:c/r:checkpoint_memory_contents:458] collected 22 pages
+[ 1774.623869] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.623873] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 90208
+[ 1774.624199] [3326:3326:c/r:pgarr_release_pages:102] total pages 22
+[ 1774.624202] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.624208] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 16 first 1
+[ 1774.624212] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2034 lprid 2186 segsz 393216 mlock -1
+[ 1774.624214] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 16
+[ 1774.624216] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.624228] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.624230] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.624233] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.624235] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.624237] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.624239] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.624241] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.624243] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.624245] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.624247] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.624249] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.624251] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.624254] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.624256] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.624258] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.624260] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.624262] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.624264] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.624266] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.624268] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.624270] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.624272] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.624274] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x21
+[ 1774.624276] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x22
+[ 1774.624279] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x24
+[ 1774.624281] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x25
+[ 1774.624283] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x27
+[ 1774.624285] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x28
+[ 1774.624287] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2a
+[ 1774.624289] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2b
+[ 1774.624291] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2d
+[ 1774.624293] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2e
+[ 1774.624295] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x30
+[ 1774.624297] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x31
+[ 1774.624299] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x33
+[ 1774.624301] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x34
+[ 1774.624304] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x36
+[ 1774.624305] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x37
+[ 1774.624308] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x39
+[ 1774.624309] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3a
+[ 1774.624312] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3c
+[ 1774.624314] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3d
+[ 1774.624316] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3f
+[ 1774.624318] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x40
+[ 1774.624320] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x42
+[ 1774.624322] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x43
+[ 1774.624324] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x45
+[ 1774.624326] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x46
+[ 1774.624331] [3326:3326:c/r:checkpoint_memory_contents:458] collected 48 pages
+[ 1774.624334] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.624338] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 196808
+[ 1774.624984] [3326:3326:c/r:pgarr_release_pages:102] total pages 48
+[ 1774.624987] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.624993] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 17 first 1
+[ 1774.624996] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2035 lprid 1795 segsz 393216 mlock -1
+[ 1774.624998] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 17
+[ 1774.625001] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.625005] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.625008] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.625010] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.625012] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.625014] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.625016] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.625018] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.625020] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.625022] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.625024] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.625026] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.625028] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.625031] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.625033] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.625035] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.625037] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.625039] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.625041] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.625043] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.625046] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.625048] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.625050] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.625052] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x21
+[ 1774.625054] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x22
+[ 1774.625056] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x24
+[ 1774.625058] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x25
+[ 1774.625060] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x27
+[ 1774.625062] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x28
+[ 1774.625064] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2a
+[ 1774.625066] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2b
+[ 1774.625068] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2d
+[ 1774.625070] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2e
+[ 1774.625072] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x30
+[ 1774.625074] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x31
+[ 1774.625076] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x33
+[ 1774.625078] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x34
+[ 1774.625080] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x36
+[ 1774.625082] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x37
+[ 1774.625084] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x39
+[ 1774.625086] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3a
+[ 1774.625088] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3c
+[ 1774.625090] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3d
+[ 1774.625092] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3f
+[ 1774.625095] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x40
+[ 1774.625097] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x42
+[ 1774.625099] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x43
+[ 1774.625101] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x45
+[ 1774.625103] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x46
+[ 1774.625108] [3326:3326:c/r:checkpoint_memory_contents:458] collected 48 pages
+[ 1774.625111] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.625115] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 196808
+[ 1774.625701] [3326:3326:c/r:pgarr_release_pages:102] total pages 48
+[ 1774.625704] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.625710] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 18 first 1
+[ 1774.625713] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2121 lprid 1795 segsz 393216 mlock -1
+[ 1774.625715] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 18
+[ 1774.625717] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.625722] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.625724] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.625727] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.625729] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.625731] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.625733] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.625735] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.625737] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.625739] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.625741] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.625743] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.625745] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.625748] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.625749] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.625752] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.625754] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.625756] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.625758] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.625760] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.625762] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.625764] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.625766] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.625775] [3326:3326:c/r:checkpoint_memory_contents:458] collected 22 pages
+[ 1774.625778] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.625782] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 90208
+[ 1774.625979] [3326:3326:c/r:pgarr_release_pages:102] total pages 22
+[ 1774.625982] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.625988] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 19 first 1
+[ 1774.625991] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2123 lprid 1795 segsz 393216 mlock -1
+[ 1774.625993] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 19
+[ 1774.625995] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.626000] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.626002] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.626004] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.626006] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.626008] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.626010] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.626012] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.626014] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.626016] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.626018] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.626021] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.626022] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.626025] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.626027] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.626029] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.626031] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.626042] [3326:3326:c/r:checkpoint_memory_contents:458] collected 16 pages
+[ 1774.626045] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.626049] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 65608
+[ 1774.626533] [3326:3326:c/r:pgarr_release_pages:102] total pages 16
+[ 1774.626536] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.626541] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 20 first 1
+[ 1774.626545] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2047 lprid 1795 segsz 393216 mlock -1
+[ 1774.626547] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 20
+[ 1774.626549] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.626554] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.626556] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.626558] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.626560] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.626562] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.626564] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.626566] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.626568] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.626570] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.626572] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.626574] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.626576] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.626579] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.626581] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.626583] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.626585] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.626587] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.626589] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.626591] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.626593] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.626595] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.626597] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.626599] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x21
+[ 1774.626601] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x22
+[ 1774.626611] [3326:3326:c/r:checkpoint_memory_contents:458] collected 24 pages
+[ 1774.626613] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.626617] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 98408
+[ 1774.626900] [3326:3326:c/r:pgarr_release_pages:102] total pages 24
+[ 1774.626900] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.626900] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 21 first 1
+[ 1774.626901] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2051 lprid 1795 segsz 393216 mlock -1
+[ 1774.626901] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 21
+[ 1774.626901] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.626901] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.626901] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.626901] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.626901] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.626901] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.626901] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.626901] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.626901] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.626901] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.626905] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.626907] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.626909] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.626911] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.626913] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.626915] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.626917] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.626920] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.626922] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.626924] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.626926] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.626928] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.626930] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.626932] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x21
+[ 1774.626934] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x22
+[ 1774.626943] [3326:3326:c/r:checkpoint_memory_contents:458] collected 24 pages
+[ 1774.626946] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.626951] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 98408
+[ 1774.627166] [3326:3326:c/r:pgarr_release_pages:102] total pages 24
+[ 1774.627169] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.627174] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 22 first 1
+[ 1774.627178] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2186 lprid 3019 segsz 393216 mlock -1
+[ 1774.627180] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 22
+[ 1774.627182] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.627187] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.627189] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.627191] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.627193] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.627195] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.627197] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.627199] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.627201] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.627203] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.627205] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.627207] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.627209] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.627212] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.627214] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.627216] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.627218] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.627220] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.627222] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
+[ 1774.627224] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1b
+[ 1774.627226] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1c
+[ 1774.627228] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1e
+[ 1774.627230] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
+[ 1774.627240] [3326:3326:c/r:checkpoint_memory_contents:458] collected 22 pages
+[ 1774.627243] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.627247] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 90208
+[ 1774.627494] [3326:3326:c/r:pgarr_release_pages:102] total pages 22
+[ 1774.627497] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.627503] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 23 first 1
+[ 1774.627506] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2008 lprid 1795 segsz 393216 mlock -1
+[ 1774.627508] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 23
+[ 1774.627511] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.627515] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
+[ 1774.627518] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1
+[ 1774.627520] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2
+[ 1774.627522] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3
+[ 1774.627524] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.627526] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x5
+[ 1774.627528] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.627530] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.627532] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x8
+[ 1774.627534] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.627536] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.627538] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb
+[ 1774.627540] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xc
+[ 1774.627542] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.627544] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xe
+[ 1774.627546] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.627548] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.627550] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x11
+[ 1774.627552] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.627554] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.627556] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x14
+[ 1774.627558] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.627560] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.627562] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x17
+[ 1774.627564] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.627566] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
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+[ 1774.627591] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x26
+[ 1774.627593] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x27
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+[ 1774.627599] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2a
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+[ 1774.627673] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4f
+[ 1774.627675] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x50
+[ 1774.627677] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x51
+[ 1774.627679] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x52
+[ 1774.627681] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x53
+[ 1774.627683] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x54
+[ 1774.627685] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x55
+[ 1774.627687] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x56
+[ 1774.627689] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x57
+[ 1774.627691] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x58
+[ 1774.627693] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x59
+[ 1774.627696] [3326:3326:c/r:checkpoint_memory_contents:458] collected 90 pages
+[ 1774.627699] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.627703] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 369008
+[ 1774.628083] [3326:3326:c/r:pgarr_release_pages:102] total pages 90
+[ 1774.628083] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.628083] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 24 first 1
+[ 1774.628083] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2008 lprid 1795 segsz 393216 mlock -1
+[ 1774.628083] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 24
+[ 1774.628083] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x8
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xe
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x14
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x17
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x18
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x19
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x1f
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x23
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x25
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x26
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x27
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x28
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x29
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2a
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2b
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2c
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2d
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2e
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x2f
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x30
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x31
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x32
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x33
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x34
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x35
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x36
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x37
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x38
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x39
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3a
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3b
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x3e
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x41
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x42
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x44
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x45
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+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x47
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x48
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x49
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4a
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4b
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4c
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4d
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4e
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4f
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x50
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x51
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x52
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x53
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x54
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x55
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x56
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x57
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x58
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x59
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x5a
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x5b
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x5c
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x5d
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x5e
+[ 1774.628083] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x5f
+[ 1774.628083] [3326:3326:c/r:checkpoint_memory_contents:458] collected 96 pages
+[ 1774.628083] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.628083] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 393608
+[ 1774.639776] [3326:3326:c/r:pgarr_release_pages:102] total pages 96
+[ 1774.639784] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.639792] [3326:3326:c/r:ckpt_obj_lookup_add:803] INODE objref 25 first 1
+[ 1774.639798] [3326:3326:c/r:fill_ipc_shm_hdr:73] shm: cprid 2186 lprid 1795 segsz 393216 mlock -1
+[ 1774.639800] [3326:3326:c/r:checkpoint_ipc_shm:109] shm: objref 25
+[ 1774.639803] [3326:3326:c/r:ckpt_write_obj:41] type 502 len 120
+[ 1774.639808] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x0
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+[ 1774.639816] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x4
+[ 1774.639818] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x6
+[ 1774.639820] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x7
+[ 1774.639822] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9
+[ 1774.639824] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xa
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+[ 1774.639829] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xd
+[ 1774.639831] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xf
+[ 1774.639833] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x10
+[ 1774.639836] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x12
+[ 1774.639838] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x13
+[ 1774.639840] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x15
+[ 1774.639842] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x16
+[ 1774.639853] [3326:3326:c/r:checkpoint_memory_contents:458] collected 16 pages
+[ 1774.639856] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.639860] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 65608
+[ 1774.640011] [3326:3326:c/r:pgarr_release_pages:102] total pages 16
+[ 1774.640014] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640019] [3326:3326:c/r:checkpoint_ipc_any:84] ipc-shm ret 0
+[ 1774.640022] [3326:3326:c/r:checkpoint_ipc_any:76] ipc-msg count 0
+[ 1774.640024] [3326:3326:c/r:ckpt_write_obj:41] type 501 len 16
+[ 1774.640028] [3326:3326:c/r:checkpoint_ipc_any:84] ipc-msg ret 0
+[ 1774.640030] [3326:3326:c/r:checkpoint_ipc_any:76] ipc-sem count 4
+[ 1774.640033] [3326:3326:c/r:ckpt_write_obj:41] type 501 len 16
+[ 1774.640038] [3326:3326:c/r:fill_ipc_sem_hdr:50] sem: nsems 1
+[ 1774.640040] [3326:3326:c/r:ckpt_write_obj:41] type 505 len 88
+[ 1774.640044] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 24
+[ 1774.640049] [3326:3326:c/r:fill_ipc_sem_hdr:50] sem: nsems 103
+[ 1774.640052] [3326:3326:c/r:ckpt_write_obj:41] type 505 len 88
+[ 1774.640055] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 1656
+[ 1774.640067] [3326:3326:c/r:fill_ipc_sem_hdr:50] sem: nsems 9
+[ 1774.640069] [3326:3326:c/r:ckpt_write_obj:41] type 505 len 88
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 152
+[ 1774.640073] [3326:3326:c/r:fill_ipc_sem_hdr:50] sem: nsems 1
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 505 len 88
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 24
+[ 1774.640073] [3326:3326:c/r:checkpoint_ipc_any:84] ipc-sem ret 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 108 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_task_ns:177] nsproxy: objref 5
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 103 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_task_objs:256] ns: objref 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 301 len 16
+[ 1774.640073] [3326:3326:c/r:do_checkpoint_file_table:362] nfds 5
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_common:188] file cr-test.out credref 1 secref 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 304 len 48
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 303 len 25
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_desc:320] fd 1 objref 27 file d0c2cd00 coe 0)
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 302 len 24
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_desc:320] fd 2 objref 27 file d0c2cd00 coe 0)
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 302 len 24
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_common:188] file log credref 1 secref 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 304 len 48
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 303 len 17
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_desc:320] fd 3 objref 28 file d0c45480 coe 0)
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 302 len 24
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_desc:320] fd 4 objref 27 file d0c2cd00 coe 0)
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 302 len 24
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_common:188] file out credref 1 secref 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 304 len 48
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 303 len 17
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_desc:320] fd 5 objref 29 file d5cacd80 coe 0)
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 302 len 24
+[ 1774.640073] [3326:3326:c/r:do_checkpoint_file_table:370] files_deferq ran 0 entries
+[ 1774.640073] [3326:3326:c/r:checkpoint_task_objs:263] files: objref 26
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:do_checkpoint_cred:1046] cred uid 0 fsuid 0 gid 0 secref 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 114 len 96
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_common:188] file ckpt credref 32 secref 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 304 len 48
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 303 len 53
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 401 len 120
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 360
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0x8048000-0x8049000 flags 0x8001875
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0x8048000-0x8049000 flags 0x8001875 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0x8049000-0x804a000 flags 0x8101871
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0x8049000-0x804a000 flags 0x8101871 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x8049000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 1 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 4108
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 1
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0x804a000-0x804b000 flags 0x8101873
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0x804a000-0x804b000 flags 0x8101873 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x804a000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 1 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 4108
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 1
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0x9b97000-0x9bb8000 flags 0x100073
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0x9b97000-0x9bb8000 flags 0x100073 type 2
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0x9b97000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 1 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 4108
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 1
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb769d000-0xb769e000 flags 0x100073
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb769d000-0xb769e000 flags 0x100073 type 2
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb769d000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 1 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 4108
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 1
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb769e000-0xb77dc000 flags 0x8000075
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_common:188] file libc-2.10.1.so credref 1 secref 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 304 len 48
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 303 len 42
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb769e000-0xb77dc000 flags 0x8000075 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb77dc000-0xb77dd000 flags 0x8000070
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb77dc000-0xb77dd000 flags 0x8000070 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb77dd000-0xb77df000 flags 0x8100071
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb77dd000-0xb77df000 flags 0x8100071 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb77dd000
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb77de000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 2 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 8208
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 2
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb77df000-0xb77e0000 flags 0x8100073
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb77df000-0xb77e0000 flags 0x8100073 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb77df000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 1 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 4108
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 1
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb77e0000-0xb77e3000 flags 0x100073
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb77e0000-0xb77e3000 flags 0x100073 type 2
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb77e0000
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb77e2000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 2 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 8208
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 2
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb77f2000-0xb77f5000 flags 0x100073
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb77f2000-0xb77f5000 flags 0x100073 type 2
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb77f2000
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb77f3000
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb77f4000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 3 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 12308
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb77f5000-0xb77f6000 flags 0x4040075
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb77f5000-0xb77f6000 flags 0x4040075 type 1
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb77f6000-0xb7811000 flags 0x8000875
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_file_common:188] file ld-2.10.1.so credref 32 secref 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 304 len 48
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 303 len 26
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb77f6000-0xb7811000 flags 0x8000875 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb7811000-0xb7812000 flags 0x8100871
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb7811000-0xb7812000 flags 0x8100871 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb7811000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 1 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 4108
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 1
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xb7812000-0xb7813000 flags 0x8100873
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xb7812000-0xb7813000 flags 0x8100873 type 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xb7812000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 1 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 4108
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 1
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_vmas:626] vma 0xbfb8b000-0xbfb8e000 flags 0x100173
+[ 1774.640073] [3326:3326:c/r:generic_vma_checkpoint:502] vma 0xbfb8b000-0xbfb8e000 flags 0x100173 type 2
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 402 len 72
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xbfb8b000
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xbfb8c000
+[ 1774.640073] [3326:3326:c/r:vma_fill_pgarr:325] got page 0xbfb8d000
+[ 1774.640073] [3326:3326:c/r:checkpoint_memory_contents:458] collected 3 pages
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 4 len 12308
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 3
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 403 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_mm_context:228] nldt 0 vdso 0xb77f5000
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 404 len 24
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 202 len 8
+[ 1774.640073] [3326:3326:c/r:checkpoint_task_objs:270] mm: objref 30
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 451 len 8
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 303 len 48
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj_type:66] type 303 len 10
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 6 len 16
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 601 len 2056
+[ 1774.640073] [3326:3326:c/r:checkpoint_task_objs:284] sighand: objref 36
+[ 1774.640073] [3326:3326:c/r:ckpt_obj_lookup_add:803] SIGNAL objref 37 first 1
+[ 1774.640073] [3326:3326:c/r:checkpoint_task_objs:299] signal: objref 37
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 104 len 32
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 602 len 328
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 604 len 24
+[ 1774.640073] [3326:3326:c/r:checkpoint_task:466] objs 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 604 len 24
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 603 len 16
+[ 1774.640073] [3326:3326:c/r:checkpoint_task:470] task-signal 0
+[ 1774.640073] [3326:3326:c/r:ckpt_write_obj:41] type 9001 len 16
+[ 1774.640073] [3326:3326:c/r:pgarr_release_pages:102] total pages 0

Re: Linux Checkpoint-Restart - v19

[Oren Laadan]

Jiro SEKIBA wrote:
> Hi,
> On 2010/03/18, at 5:55, Serge E. Hallyn wrote:
> 
>> Quoting Jiro SEKIBA (jir@dependable-os.net):
>>> Hi,
>>>
>>> Thank you for prompt reply!
>>> Sorry that I didn't post to containers@lists.linux-foundation.org.
>>>
>>> On 2010/03/16, at 7:55, Oren Laadan wrote:
>>>
>>>> Hi,
>>>>
>>>> Thanks for taking the time to evaluate c/r. You may want to also
>>>> try the latest, which is (as of now) ckpt-v20-rc2.
>>> Yeah, I'll eventually try to keep up with the latest,
>>> but I just want to try the one  you think it's stable first anyway.
>>>
>>>> In the future, please CC the containers mailing list for issues
>>>> related to c/r, at "containers@lists.linux-foundation.org".
>>>>
>>>> Jiro SEKIBA wrote:
>>>>> Hi,
>>>>> I'm trying to evaluate external checkpoint/restart with cr-v19 kernel.
>>>>> However, when I restart, I got "Killed" message in stdout.
>>>>> Do you have any tips or clue that are not in
>>>>> Documentation/checkpoint/usage.txt ?
>>>>> I'm using kernel pulled from
>>>>> git://git.ncl.cs.columbia.edu/pub/git/linux-cr.git .
>>>>> checkout tag named "ckpt-v19". Base distro is ubuntu 9.10.
>>>>> I ran self checkpioint/restart sample program in Documentation/checkpint.
>>>>> It works as written in usage.txt.
>>>>> However, I can not make external checkpint/restart work properly.
>>>>> I made a simple test program bellow and create checkpoint externally using
>>>>> the program in Documentation/checkpoint/, it looks checkpoint file is
>>>>> created properly.
>>>>> However, when I ran self_restart < ckpt.image, I got "Killed" message.
>>>> If you take an external checkpoint, then you need to match it
>>>> with an external restart, as opposed to self_restart.
>>>>
>>>> Otherwise, restarting with self_restart from a checkpoint that is
>>>> not a self-checkpoint can yield unexpected results.
>>>>
>>>> Since you don't mention in your post, I don't know if you are using
>>>> the tools from user-cr. If not, then you should use 'checkpoint' and
>>>> 'restart' tools from there. It is available from:
>>>> 	git://git.ncl.cs.columbia.edu/pub/git/user-cr.git
>>>> (use the same branch as the one you used to linux-cr).
>>>>
>>>> Once you have the tools compiled, and you checkpoint with the
>>>> 'checkpoint' utility from there, you can restart with:
>>>> 	restart -v < ckpt.image
>>>>
>>> Thank you for the information.
>>> Actually I was trying to create checkpoint in Document/checkpints.
>>>
>>> Now, I tried with user-cr, compiled binary in the same tag (ckpt-v19).
>>> Creating checkpoint  looks OK and restart -v shows it Success.  nice!
>>> However, the contents in /tmp/test.out never get further,
>>> it remains same as when created checkpoint.
>>>
>>> I tried  "./restart -F /cgroup/0 -v --no-pidns < ckpt.image", got Success.
>>> cat /cgroup/0/tasks tells that there is a process.
>>> ps shows ./test.  So, it looks restarting.
>>>
>>> # ps axuww |grep $(cat /cgroup/0/tasks )
>>> root      7231  0.1  0.0   1588    64 pts/0    D    16:57   0:00 ./test
>>> root      7238  0.0  0.1   2716   660 pts/1    R+   16:57   0:00 grep 7231
>>>
>>> under the /proc, one file descriptor opened, and it is /tmp/test.out
>>>
>>> #  ls -l /proc/$(cat /cgroup/0/tasks)/fd
>>> total 0
>>> lrwx------ 1 root root 64 Mar 16 16:58 0 -> /tmp/test.out
>>>
>>> Nhh, it's close..
>>>
>>> I found that when I mount cgroup with -o freezer, self_checkpoint won't work.
>>> It worked even I didn't mount the cgroup.
>>> Is it what you expect?
>> No, it is not.  Can you tell us more about exactly how it fails?
>>
> 
> OK, I've checked differences of dmesg when self_restart does well and doesn't.
> When it goes well, the filename is /tmp/cr-self.out
> 
> [  401.522556] [2307:2307:c/r:ckpt_read_fname:571] read filename '/tmp/cr-self.out'
> [  401.522558] [2307:2307:c/r:restore_open_fname:594] fname '/tmp/cr-self.out' flags 0x2

This means that restart wants to re-open the file /tmp/cr-self.out.
> 
> However, when the contents of file remains, filename is /tmp/cr-self.out.org,
> which is , of course, the one of original file binding to the original process.
> 
> [ 1088.414250] [2951:2951:c/r:ckpt_read_fname:571] read filename '/tmp/cr-self.out.orig'
> [ 1088.414253] [2951:2951:c/r:restore_open_fname:594] fname '/tmp/cr-self.out.orig' flags 0x2

This means that restart wants to re-open the file /tmp/cr-self.out.org.

Could it be that these two restart attempts use two distinct image files
as input ?

The first one seems to correspond to something like:
1) start the test, 2) checkpoint, 3) mv file and cp file, 4) restart

The second one seems to correspond to something like:
1) start the test, 2) mv file and ctp file, 3) checkpoint, 4) restart

What is the actual error reported when it doesn't work ?  (from restart
and from the kernel log)

> 
> I can not reproduce yet, but at least cgroup freezer option won't affect like I mentioned.
> Sorry that it might confuse you.
> 
> I still can not restart of external checkpoint.
> I'll try to v20 next time.

If it doesn't work, can you please describe again the exact order of
commands that you use and the reported error(s) ?

Oren.

> 
>> Maybe get the cr_tests (either from Oren's tree or from
>> git clone git://git.sr71.net/~hallyn/cr_tests.git), cd cr_test,
>> make, cd simple, run ./ckpt and send us the contents of
>> /tmp/log, dmesg, and ckptinfo -ve /tmp/out ?
> 
> I think it runs OK, but send it in case.
> /tmp/log was empty by the way.
> 
> thanks
> 
>>> Thank you again for the help!
>>> I'm feeling better to use the latest ..
>> -serge

Re: Linux Checkpoint-Restart - v19

[Jiro SEKIBA]

Hi
On 2010/03/20, at 0:34, Oren Laadan wrote:

> 
> 
> Jiro SEKIBA wrote:
>> Hi,
>> On 2010/03/18, at 5:55, Serge E. Hallyn wrote:
>>> Quoting Jiro SEKIBA (jir@dependable-os.net):
>>>> Hi,
>>>> 
>>>> Thank you for prompt reply!
>>>> Sorry that I didn't post to containers@lists.linux-foundation.org.
>>>> 
>>>> On 2010/03/16, at 7:55, Oren Laadan wrote:
>>>> 
>>>>> Hi,
>>>>> 
>>>>> Thanks for taking the time to evaluate c/r. You may want to also
>>>>> try the latest, which is (as of now) ckpt-v20-rc2.
>>>> Yeah, I'll eventually try to keep up with the latest,
>>>> but I just want to try the one  you think it's stable first anyway.
>>>> 
>>>>> In the future, please CC the containers mailing list for issues
>>>>> related to c/r, at "containers@lists.linux-foundation.org".
>>>>> 
>>>>> Jiro SEKIBA wrote:
>>>>>> Hi,
>>>>>> I'm trying to evaluate external checkpoint/restart with cr-v19 kernel.
>>>>>> However, when I restart, I got "Killed" message in stdout.
>>>>>> Do you have any tips or clue that are not in
>>>>>> Documentation/checkpoint/usage.txt ?
>>>>>> I'm using kernel pulled from
>>>>>> git://git.ncl.cs.columbia.edu/pub/git/linux-cr.git .
>>>>>> checkout tag named "ckpt-v19". Base distro is ubuntu 9.10.
>>>>>> I ran self checkpioint/restart sample program in Documentation/checkpint.
>>>>>> It works as written in usage.txt.
>>>>>> However, I can not make external checkpint/restart work properly.
>>>>>> I made a simple test program bellow and create checkpoint externally using
>>>>>> the program in Documentation/checkpoint/, it looks checkpoint file is
>>>>>> created properly.
>>>>>> However, when I ran self_restart < ckpt.image, I got "Killed" message.
>>>>> If you take an external checkpoint, then you need to match it
>>>>> with an external restart, as opposed to self_restart.
>>>>> 
>>>>> Otherwise, restarting with self_restart from a checkpoint that is
>>>>> not a self-checkpoint can yield unexpected results.
>>>>> 
>>>>> Since you don't mention in your post, I don't know if you are using
>>>>> the tools from user-cr. If not, then you should use 'checkpoint' and
>>>>> 'restart' tools from there. It is available from:
>>>>> 	git://git.ncl.cs.columbia.edu/pub/git/user-cr.git
>>>>> (use the same branch as the one you used to linux-cr).
>>>>> 
>>>>> Once you have the tools compiled, and you checkpoint with the
>>>>> 'checkpoint' utility from there, you can restart with:
>>>>> 	restart -v < ckpt.image
>>>>> 
>>>> Thank you for the information.
>>>> Actually I was trying to create checkpoint in Document/checkpints.
>>>> 
>>>> Now, I tried with user-cr, compiled binary in the same tag (ckpt-v19).
>>>> Creating checkpoint  looks OK and restart -v shows it Success.  nice!
>>>> However, the contents in /tmp/test.out never get further,
>>>> it remains same as when created checkpoint.
>>>> 
>>>> I tried  "./restart -F /cgroup/0 -v --no-pidns < ckpt.image", got Success.
>>>> cat /cgroup/0/tasks tells that there is a process.
>>>> ps shows ./test.  So, it looks restarting.
>>>> 
>>>> # ps axuww |grep $(cat /cgroup/0/tasks )
>>>> root      7231  0.1  0.0   1588    64 pts/0    D    16:57   0:00 ./test
>>>> root      7238  0.0  0.1   2716   660 pts/1    R+   16:57   0:00 grep 7231
>>>> 
>>>> under the /proc, one file descriptor opened, and it is /tmp/test.out
>>>> 
>>>> #  ls -l /proc/$(cat /cgroup/0/tasks)/fd
>>>> total 0
>>>> lrwx------ 1 root root 64 Mar 16 16:58 0 -> /tmp/test.out
>>>> 
>>>> Nhh, it's close..
>>>> 
>>>> I found that when I mount cgroup with -o freezer, self_checkpoint won't work.
>>>> It worked even I didn't mount the cgroup.
>>>> Is it what you expect?
>>> No, it is not.  Can you tell us more about exactly how it fails?
>>> 
>> OK, I've checked differences of dmesg when self_restart does well and doesn't.
>> When it goes well, the filename is /tmp/cr-self.out
>> [  401.522556] [2307:2307:c/r:ckpt_read_fname:571] read filename '/tmp/cr-self.out'
>> [  401.522558] [2307:2307:c/r:restore_open_fname:594] fname '/tmp/cr-self.out' flags 0x2
> 
> This means that restart wants to re-open the file /tmp/cr-self.out.
>> However, when the contents of file remains, filename is /tmp/cr-self.out.org,
>> which is , of course, the one of original file binding to the original process.
>> [ 1088.414250] [2951:2951:c/r:ckpt_read_fname:571] read filename '/tmp/cr-self.out.orig'
>> [ 1088.414253] [2951:2951:c/r:restore_open_fname:594] fname '/tmp/cr-self.out.orig' flags 0x2
> 
> This means that restart wants to re-open the file /tmp/cr-self.out.org.
> 
> Could it be that these two restart attempts use two distinct image files
> as input ?
> 
It's not, I ran same script that run, self_checkpoint, sleep, mv/cp file, and self_restasrt.
And sometime it's OK (means, cr.-self.out glows after restart), sometime it's not.

> The first one seems to correspond to something like:
> 1) start the test, 2) checkpoint, 3) mv file and cp file, 4) restart
> 
> The second one seems to correspond to something like:
> 1) start the test, 2) mv file and ctp file, 3) checkpoint, 4) restart
> 
> What is the actual error reported when it doesn't work ?  (from restart
> and from the kernel log)
> 

OK, that makes sense.  I tried following shell script.
If I sleep 4 instead of 3, I got expected result 100% so far

--------- self_checkpoint.sh ---------
./self_checkpoint > self.image &
sleep 3;
mv /tmp/cr-self.out /tmp/cr-self.out.orig;
cp /tmp/cr-self.out.orig /tmp/cr-self.out;

sed -i 's/count/xxxxx/g' /tmp/cr-self.out;

./self_restart < self.image
--------- self_checkpoint.sh ---------

self_restart.c creates self.image when counter i got 2,
it sleeps one second each time loop starts
So if I run the instructions in usage.txt by scripts, 
sleeping 3 seconds right after starting the self_checkpoint
may not enough sometime.


>> I can not reproduce yet, but at least cgroup freezer option won't affect like I mentioned.
>> Sorry that it might confuse you.
>> I still can not restart of external checkpoint.
>> I'll try to v20 next time.
> 
> If it doesn't work, can you please describe again the exact order of
> commands that you use and the reported error(s) ?
> 
I'll let you know in any cases.

Thank you very much for the advice

regards, 

> Oren.
> 
>>> Maybe get the cr_tests (either from Oren's tree or from
>>> git clone git://git.sr71.net/~hallyn/cr_tests.git), cd cr_test,
>>> make, cd simple, run ./ckpt and send us the contents of
>>> /tmp/log, dmesg, and ckptinfo -ve /tmp/out ?
>> I think it runs OK, but send it in case.
>> /tmp/log was empty by the way.
>> thanks
>>>> Thank you again for the help!
>>>> I'm feeling better to use the latest ..
>>> -serge