* spurious 'executable not found' errors on nfs automounted partition
@ 2007-10-26 11:59 Massimo Mongardini
2007-10-26 16:20 ` Ian Kent
0 siblings, 1 reply; 5+ messages in thread
From: Massimo Mongardini @ 2007-10-26 11:59 UTC (permalink / raw)
To: autofs
Hi everyone,
I am experiencing an issue in the following circumstances:
os: rhel4.5
kernel client: 2.6.9-55.0.9.ELsmp
kernel server: 2.6.9-55.0.2.ELsmp
autofs version 4.1.3-199.3
server exports folder /nfs/folder with parameters:
async,rw,fsid=1,no_root_squash
client automounts /nfs/folder with:
auto.master:
/nfs /etc/auto.nfs
auto.nfs:
folder -fstype=nfs,udp,rsize=32768,wsize=32768,noatime
fs-cluster:/nfs/folder
default values for automount are --timeout 60
If I run a script that checks with a series of increasing sleep
intervals < 120 if an exported file is executable,
I notice that if there is a coincidence between an unmount request and a
file request the file test fails
Thu Oct 25 17:00:28 GMT 2007 Error at DELAY: 38
Oct 25 17:00:28 server mountd[8014]: authenticated unmount request from
client:989 for /nfs/folder (/nfs/folder)
Fri Oct 26 04:48:41 GMT 2007 Error at DELAY: 25
Oct 26 04:48:41 server mountd[8014]: authenticated unmount request from
client:846 for /nfs/folder (/nfs/folder)
the test script looks like this:
EXECUTABLE="/nfs/folder/somepath/exec"
DELAY="1"
STOPCOUNT=120
OUT=$1
while true
do
while [ "$DELAY" -lt "$STOPCOUNT" ]
do
test -x $EXECUTABLE
if [ "$?" -ne "0" ]
then
echo "$(date) Error at DELAY: $DELAY" >> $OUT
else
echo "$(date) Executable found at DELAY: $DELAY" >> $OUT
fi
sleep $DELAY
(( DELAY++ ))
done
done
any help is much appreciated
cheers,
Massimo
--
Massimo Mongardini
_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
echo 'Jg!J!hjwf!zpv!bo!bqqmf!boe!zpv!hjwf!nf!bo!bqqmf-!uifo!xf!xjmm!ibwf!bo!bqqmf!fbdi/!Cvu!jg!J!hjwf!zpv!bo!jefb!boe!zpv!hjwf!nf!bo!jefb-!xf!xjmm!ibwf!uxp!jefbt!fbdi!' | perl -pe 's/(.)/chr(ord($1)-1)/ge'
#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#
Please avoid sending me Word or PowerPoint attachments.
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: spurious 'executable not found' errors on nfs automounted partition
2007-10-26 11:59 spurious 'executable not found' errors on nfs automounted partition Massimo Mongardini
@ 2007-10-26 16:20 ` Ian Kent
2007-10-29 14:16 ` Massimo Mongardini
0 siblings, 1 reply; 5+ messages in thread
From: Ian Kent @ 2007-10-26 16:20 UTC (permalink / raw)
To: Massimo Mongardini; +Cc: autofs
On Fri, 2007-10-26 at 12:59 +0100, Massimo Mongardini wrote:
> Hi everyone,
> I am experiencing an issue in the following circumstances:
>
> os: rhel4.5
> kernel client: 2.6.9-55.0.9.ELsmp
> kernel server: 2.6.9-55.0.2.ELsmp
> autofs version 4.1.3-199.3
>
> server exports folder /nfs/folder with parameters:
> async,rw,fsid=1,no_root_squash
>
> client automounts /nfs/folder with:
>
> auto.master:
> /nfs /etc/auto.nfs
>
> auto.nfs:
> folder -fstype=nfs,udp,rsize=32768,wsize=32768,noatime
> fs-cluster:/nfs/folder
>
> default values for automount are --timeout 60
>
> If I run a script that checks with a series of increasing sleep
> intervals < 120 if an exported file is executable,
> I notice that if there is a coincidence between an unmount request and a
> file request the file test fails
This sounds like the mount/expire race patch and it's friends that
aren't present in that kernel.
There have been a few issues discussed around these patches (or the lack
of them) on this list lately.
>
> Thu Oct 25 17:00:28 GMT 2007 Error at DELAY: 38
> Oct 25 17:00:28 server mountd[8014]: authenticated unmount request from
> client:989 for /nfs/folder (/nfs/folder)
> Fri Oct 26 04:48:41 GMT 2007 Error at DELAY: 25
> Oct 26 04:48:41 server mountd[8014]: authenticated unmount request from
> client:846 for /nfs/folder (/nfs/folder)
>
> the test script looks like this:
>
> EXECUTABLE="/nfs/folder/somepath/exec"
> DELAY="1"
> STOPCOUNT=120
> OUT=$1
> while true
> do
> while [ "$DELAY" -lt "$STOPCOUNT" ]
> do
> test -x $EXECUTABLE
> if [ "$?" -ne "0" ]
> then
> echo "$(date) Error at DELAY: $DELAY" >> $OUT
> else
> echo "$(date) Executable found at DELAY: $DELAY" >> $OUT
> fi
> sleep $DELAY
> (( DELAY++ ))
> done
> done
>
> any help is much appreciated
>
> cheers,
> Massimo
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: spurious 'executable not found' errors on nfs automounted partition
2007-10-26 16:20 ` Ian Kent
@ 2007-10-29 14:16 ` Massimo Mongardini
2007-10-29 16:01 ` Ian Kent
0 siblings, 1 reply; 5+ messages in thread
From: Massimo Mongardini @ 2007-10-29 14:16 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs
[-- Attachment #1.1: Type: text/plain, Size: 3153 bytes --]
Ian Kent wrote:
> On Fri, 2007-10-26 at 12:59 +0100, Massimo Mongardini wrote:
>
>> Hi everyone,
>> I am experiencing an issue in the following circumstances:
>>
>> os: rhel4.5
>> kernel client: 2.6.9-55.0.9.ELsmp
>> kernel server: 2.6.9-55.0.2.ELsmp
>> autofs version 4.1.3-199.3
>>
>> server exports folder /nfs/folder with parameters:
>> async,rw,fsid=1,no_root_squash
>>
>> client automounts /nfs/folder with:
>>
>> auto.master:
>> /nfs /etc/auto.nfs
>>
>> auto.nfs:
>> folder -fstype=nfs,udp,rsize=32768,wsize=32768,noatime
>> fs-cluster:/nfs/folder
>>
>> default values for automount are --timeout 60
>>
>> If I run a script that checks with a series of increasing sleep
>> intervals < 120 if an exported file is executable,
>> I notice that if there is a coincidence between an unmount request and a
>> file request the file test fails
>>
>
> This sounds like the mount/expire race patch and it's friends that
> aren't present in that kernel.
>
> There have been a few issues discussed around these patches (or the lack
> of them) on this list lately.
>
>
>> Thu Oct 25 17:00:28 GMT 2007 Error at DELAY: 38
>> Oct 25 17:00:28 server mountd[8014]: authenticated unmount request from
>> client:989 for /nfs/folder (/nfs/folder)
>> Fri Oct 26 04:48:41 GMT 2007 Error at DELAY: 25
>> Oct 26 04:48:41 server mountd[8014]: authenticated unmount request from
>> client:846 for /nfs/folder (/nfs/folder)
>>
>> the test script looks like this:
>>
>> EXECUTABLE="/nfs/folder/somepath/exec"
>> DELAY="1"
>> STOPCOUNT=120
>> OUT=$1
>> while true
>> do
>> while [ "$DELAY" -lt "$STOPCOUNT" ]
>> do
>> test -x $EXECUTABLE
>> if [ "$?" -ne "0" ]
>> then
>> echo "$(date) Error at DELAY: $DELAY" >> $OUT
>> else
>> echo "$(date) Executable found at DELAY: $DELAY" >> $OUT
>> fi
>> sleep $DELAY
>> (( DELAY++ ))
>> done
>> done
>>
>> any help is much appreciated
>>
>> cheers,
>> Massimo
>>
>>
>
>
Ian,
thanks for your answer.
I saw that bug but I thought was just related to autofs4. Since the
client is running a maybe-patched 2.6.9-55.0.9.ELsmp version I thought
would be wnough. Am I missing something or some useful post?
$ rpm -q --changelog kernel-smp-2.6.9-55.0.9.EL | grep -e autofs | grep race
-revert: autofs4 fix for race between mount and expire [248126]
-autofs4: fix race between mount and expire (Ian Kent) [248126]
-autofs4: fix race between mount/expire (Jeff Moyer) [175778]
The server has just:
$ rpm -q --changelog kernel-smp-2.6.9-55.0.2.EL | grep -e autofs | grep race
-autofs4: fix race between mount/expire (Jeff Moyer) [175778]
cheers,
Massimo
--
Massimo Mongardini
_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
echo 'Jg!J!hjwf!zpv!bo!bqqmf!boe!zpv!hjwf!nf!bo!bqqmf-!uifo!xf!xjmm!ibwf!bo!bqqmf!fbdi/!Cvu!jg!J!hjwf!zpv!bo!jefb!boe!zpv!hjwf!nf!bo!jefb-!xf!xjmm!ibwf!uxp!jefbt!fbdi!' | perl -pe 's/(.)/chr(ord($1)-1)/ge'
#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#
Please avoid sending me Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html
[-- Attachment #1.2: Type: text/html, Size: 3708 bytes --]
[-- Attachment #2: Type: text/plain, Size: 140 bytes --]
_______________________________________________
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http://linux.kernel.org/mailman/listinfo/autofs
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: spurious 'executable not found' errors on nfs automounted partition
2007-10-29 14:16 ` Massimo Mongardini
@ 2007-10-29 16:01 ` Ian Kent
2007-10-29 16:45 ` Massimo Mongardini
0 siblings, 1 reply; 5+ messages in thread
From: Ian Kent @ 2007-10-29 16:01 UTC (permalink / raw)
To: Massimo Mongardini; +Cc: autofs
On Mon, 2007-10-29 at 14:16 +0000, Massimo Mongardini wrote:
> Ian Kent wrote:
> > On Fri, 2007-10-26 at 12:59 +0100, Massimo Mongardini wrote:
> >
> > > Hi everyone,
> > > I am experiencing an issue in the following circumstances:
> > >
> > > os: rhel4.5
> > > kernel client: 2.6.9-55.0.9.ELsmp
> > > kernel server: 2.6.9-55.0.2.ELsmp
> > > autofs version 4.1.3-199.3
> > >
> > > server exports folder /nfs/folder with parameters:
> > > async,rw,fsid=1,no_root_squash
> > >
> > > client automounts /nfs/folder with:
> > >
> > > auto.master:
> > > /nfs /etc/auto.nfs
> > >
> > > auto.nfs:
> > > folder -fstype=nfs,udp,rsize=32768,wsize=32768,noatime
> > > fs-cluster:/nfs/folder
> > >
> > > default values for automount are --timeout 60
> > >
> > > If I run a script that checks with a series of increasing sleep
> > > intervals < 120 if an exported file is executable,
> > > I notice that if there is a coincidence between an unmount request and a
> > > file request the file test fails
> > >
> >
> > This sounds like the mount/expire race patch and it's friends that
> > aren't present in that kernel.
> >
> > There have been a few issues discussed around these patches (or the lack
> > of them) on this list lately.
> >
> >
> > > Thu Oct 25 17:00:28 GMT 2007 Error at DELAY: 38
> > > Oct 25 17:00:28 server mountd[8014]: authenticated unmount request from
> > > client:989 for /nfs/folder (/nfs/folder)
> > > Fri Oct 26 04:48:41 GMT 2007 Error at DELAY: 25
> > > Oct 26 04:48:41 server mountd[8014]: authenticated unmount request from
> > > client:846 for /nfs/folder (/nfs/folder)
> > >
> > > the test script looks like this:
> > >
> > > EXECUTABLE="/nfs/folder/somepath/exec"
> > > DELAY="1"
> > > STOPCOUNT=120
> > > OUT=$1
> > > while true
> > > do
> > > while [ "$DELAY" -lt "$STOPCOUNT" ]
> > > do
> > > test -x $EXECUTABLE
> > > if [ "$?" -ne "0" ]
> > > then
> > > echo "$(date) Error at DELAY: $DELAY" >> $OUT
> > > else
> > > echo "$(date) Executable found at DELAY: $DELAY" >> $OUT
> > > fi
> > > sleep $DELAY
> > > (( DELAY++ ))
> > > done
> > > done
> > >
> > > any help is much appreciated
> > >
> > > cheers,
> > > Massimo
> > >
> > >
> >
> >
> Ian,
> thanks for your answer.
> I saw that bug but I thought was just related to autofs4. Since the
> client is running a maybe-patched 2.6.9-55.0.9.ELsmp version I thought
> would be wnough. Am I missing something or some useful post?
>
> $ rpm -q --changelog kernel-smp-2.6.9-55.0.9.EL | grep -e autofs |
> grep race
> -revert: autofs4 fix for race between mount and expire [248126]
This is the bit you should notice.
The needed patches just aren't present.
> -autofs4: fix race between mount and expire (Ian Kent) [248126]
> -autofs4: fix race between mount/expire (Jeff Moyer) [175778]
>
> The server has just:
> $ rpm -q --changelog kernel-smp-2.6.9-55.0.2.EL | grep -e autofs |
> grep race
> -autofs4: fix race between mount/expire (Jeff Moyer) [175778]
And this version would be OK if it had the needed corrections.
Ian
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: spurious 'executable not found' errors on nfs automounted partition
2007-10-29 16:01 ` Ian Kent
@ 2007-10-29 16:45 ` Massimo Mongardini
0 siblings, 0 replies; 5+ messages in thread
From: Massimo Mongardini @ 2007-10-29 16:45 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs
[-- Attachment #1.1: Type: text/plain, Size: 3848 bytes --]
Ian Kent wrote:
> On Mon, 2007-10-29 at 14:16 +0000, Massimo Mongardini wrote:
>
>> Ian Kent wrote:
>>
>>> On Fri, 2007-10-26 at 12:59 +0100, Massimo Mongardini wrote:
>>>
>>>
>>>> Hi everyone,
>>>> I am experiencing an issue in the following circumstances:
>>>>
>>>> os: rhel4.5
>>>> kernel client: 2.6.9-55.0.9.ELsmp
>>>> kernel server: 2.6.9-55.0.2.ELsmp
>>>> autofs version 4.1.3-199.3
>>>>
>>>> server exports folder /nfs/folder with parameters:
>>>> async,rw,fsid=1,no_root_squash
>>>>
>>>> client automounts /nfs/folder with:
>>>>
>>>> auto.master:
>>>> /nfs /etc/auto.nfs
>>>>
>>>> auto.nfs:
>>>> folder -fstype=nfs,udp,rsize=32768,wsize=32768,noatime
>>>> fs-cluster:/nfs/folder
>>>>
>>>> default values for automount are --timeout 60
>>>>
>>>> If I run a script that checks with a series of increasing sleep
>>>> intervals < 120 if an exported file is executable,
>>>> I notice that if there is a coincidence between an unmount request and a
>>>> file request the file test fails
>>>>
>>>>
>>> This sounds like the mount/expire race patch and it's friends that
>>> aren't present in that kernel.
>>>
>>> There have been a few issues discussed around these patches (or the lack
>>> of them) on this list lately.
>>>
>>>
>>>
>>>> Thu Oct 25 17:00:28 GMT 2007 Error at DELAY: 38
>>>> Oct 25 17:00:28 server mountd[8014]: authenticated unmount request from
>>>> client:989 for /nfs/folder (/nfs/folder)
>>>> Fri Oct 26 04:48:41 GMT 2007 Error at DELAY: 25
>>>> Oct 26 04:48:41 server mountd[8014]: authenticated unmount request from
>>>> client:846 for /nfs/folder (/nfs/folder)
>>>>
>>>> the test script looks like this:
>>>>
>>>> EXECUTABLE="/nfs/folder/somepath/exec"
>>>> DELAY="1"
>>>> STOPCOUNT=120
>>>> OUT=$1
>>>> while true
>>>> do
>>>> while [ "$DELAY" -lt "$STOPCOUNT" ]
>>>> do
>>>> test -x $EXECUTABLE
>>>> if [ "$?" -ne "0" ]
>>>> then
>>>> echo "$(date) Error at DELAY: $DELAY" >> $OUT
>>>> else
>>>> echo "$(date) Executable found at DELAY: $DELAY" >> $OUT
>>>> fi
>>>> sleep $DELAY
>>>> (( DELAY++ ))
>>>> done
>>>> done
>>>>
>>>> any help is much appreciated
>>>>
>>>> cheers,
>>>> Massimo
>>>>
>>>>
>>>>
>>>
>>>
>> Ian,
>> thanks for your answer.
>> I saw that bug but I thought was just related to autofs4. Since the
>> client is running a maybe-patched 2.6.9-55.0.9.ELsmp version I thought
>> would be wnough. Am I missing something or some useful post?
>>
>> $ rpm -q --changelog kernel-smp-2.6.9-55.0.9.EL | grep -e autofs |
>> grep race
>> -revert: autofs4 fix for race between mount and expire [248126]
>>
>
> This is the bit you should notice.
> The needed patches just aren't present.
>
>
>> -autofs4: fix race between mount and expire (Ian Kent) [248126]
>> -autofs4: fix race between mount/expire (Jeff Moyer) [175778]
>>
>> The server has just:
>> $ rpm -q --changelog kernel-smp-2.6.9-55.0.2.EL | grep -e autofs |
>> grep race
>> -autofs4: fix race between mount/expire (Jeff Moyer) [175778]
>>
>
> And this version would be OK if it had the needed corrections.
>
> Ian
>
>
>
Ian,
It's clear now... I didn't notice the revert ... ;)
Thanks for your time, I'll just keep the mount points hard mounted until
a patched kernel will be released.
cheers
Massimo
--
Massimo Mongardini
_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
echo 'Jg!J!hjwf!zpv!bo!bqqmf!boe!zpv!hjwf!nf!bo!bqqmf-!uifo!xf!xjmm!ibwf!bo!bqqmf!fbdi/!Cvu!jg!J!hjwf!zpv!bo!jefb!boe!zpv!hjwf!nf!bo!jefb-!xf!xjmm!ibwf!uxp!jefbt!fbdi!' | perl -pe 's/(.)/chr(ord($1)-1)/ge'
#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#--#
Please avoid sending me Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html
[-- Attachment #1.2: Type: text/html, Size: 4431 bytes --]
[-- Attachment #2: Type: text/plain, Size: 140 bytes --]
_______________________________________________
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http://linux.kernel.org/mailman/listinfo/autofs
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2007-10-29 16:45 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-10-26 11:59 spurious 'executable not found' errors on nfs automounted partition Massimo Mongardini
2007-10-26 16:20 ` Ian Kent
2007-10-29 14:16 ` Massimo Mongardini
2007-10-29 16:01 ` Ian Kent
2007-10-29 16:45 ` Massimo Mongardini
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