Thanks for your favor..:-)
it works well.
So, It turns out that PV guest's configuration is somehow problematic.
I have not found faults about my domU's configuration.
Anyway, But soem problem yet remains.
'xm save [domain] [file]' and 'xm restore [file]' command works well.
'xm save -c [domain] [file]' command doesn't work well.
As you know, '-c' option means "leaving domain running after creating snapshot"
but after snapshot, domU state is bad
xm console [domain] after snapshot,
WARNING: g.e. still in use!
WARNING: g.e. still in use!
WARNING: g.e. still in use!
WARNING: g.e. still in use!
this message appeared and any response cannot be found.
after destroy domU, I try to restore by snapshoted file and it seems to work well.
what is the problem??
and, I think that the snapshoted file contains memory contents. where is the snapshoted virtual disk file?? xen use COW disk for checkpoint??, If so, where is it?
On Tue, Mar 23, 2010 at 08:32:37PM +0900, ?????? wrote:Try using this config:
> 32bit.
>
> CPU is Genuine Intel(R) CPU T2300 @ 1.66GHz.
>
> any problem here??
>
http://pasik.reaktio.net/fedora/config-2.6.32.9-70.fc12.i686.PAE
That's the default fedora 32bit kernel .config.
copy it as .config and then do "make oldconfig".
that worked for me with 2.6.32.9.
-- Pasi
> 2010/3/23 Pasi Kärkkäinen <[1]pasik@iki.fi>
>
> On Tue, Mar 23, 2010 at 08:27:46PM +0900, ?????? wrote:
> > this is my domU config file
> > there is nothing special....
> >
> > ==============================================================
> > kernel = "/boot/vmlinuz-2.6.32.10-domU"
> > ramdisk = "/boot/initrd.img-2.6.32.10-domU"
> > memory = 1024
> > name = "ubuntu1"
> > vcpus = 1
> > vif = [ 'mac=00:16:3e:48:ef:5c, bridge=eth0' ]
> > disk = [
> >
> 'file:/root/xen/domainU/ubuntu1/ubuntu1.img,xvda1,w','file:/root/xen/domainU/ubuntu1/ubuntu1_swap.img,xvda2,w'
> > ]
> > hostname= "ubuntu1"
> > root = "/dev/xvda1 ro"
> > extra = "console=hvc0 earlyprintk=xen"
> > ==============================================================
> >
> > and I also used Ubuntu distribution .config file which was created
> at
> > Ubuntu install time for domU build
> >
>
> Ok. Is it 32bit or 64bit?
> -- Pasi
>
> > 2010/3/23 Pasi Kärkkäinen <[1][2]pasik@iki.fi>> > > 2010/3/23 Pasi Kärkkäinen <[1][2][3]pasik@iki.fi>
> >
> > On Tue, Mar 23, 2010 at 08:01:42PM +0900, ?????? wrote:
> > > 2.6.32.10 domU also failed with same error log..
> > > Is it exactly domU problem??
> > >
> >
> > For PV guests it is _usually_ a domU kernel problem.
> > > Is there specific kernel configuration related to
> save/restore??
> > > any other comments??
> > >
> >
> > I tested using 2.6.32.9 in the domU 1 month ago (or so),
> > and I could save/restore just fine.
> >
> > I tried both 32bit and 64bit guests, and both single-vcpu and
> > multi-vcpu.
> > my .config was based on Fedora kernel .config.
> >
> > Please paste your /etc/xen/<guest> cfgfile?
> >
> > -- Pasi
> >
> > > 1. mailto:[3][4]pasik@iki.fi> > >
> > > On Tue, Mar 23, 2010 at 05:04:59PM +0900, ?????? wrote:
> > > > when I command 'xm save [domainU] [filename]', save
> process
> > does
> > > not
> > > > complete with this error message
> > > >
> > > > Error: /usr/lib/xen/bin/xc_save 34 2 0 0 0 failed
> > > > Usage: xm save [-c] <Domain> <CheckpointFile>
> > > >
> > > > Save a domain state to restore later.
> > > > -c, --checkpoint Leave domain running
> after
> > > > creating
> > > > snapshot
> > > >
> > > > and /var/log/xen/xend.log produced below error
> message.
> > > >
> > > > [2010-03-23 16:58:07 1023] DEBUG (DevController:643)
> > > hotplugStatusCallback
> > > > 1.
> > > > [2010-03-23 16:58:07 1023] DEBUG (DevController:139)
> Waiting
> > for
> > > devices
> > > > irq.
> > > > [2010-03-23 16:58:07 1023] DEBUG (DevController:139)
> Waiting
> > for
> > > devices
> > > > vfb.
> > > > [2010-03-23 16:58:07 1023] DEBUG (DevController:139)
> Waiting
> > for
> > > devices
> > > > pci.
> > > > [2010-03-23 16:58:07 1023] DEBUG (DevController:139)
> Waiting
> > for
> > > devices
> > > > vtpm.
> > > > [2010-03-23 16:58:07 1023] INFO (XendDomain:1182)
> Domain
> > ubuntu1
> > > (3)
> > > > unpaused.
> > > > [2010-03-23 16:58:42 1023] DEBUG (XendCheckpoint:110)
> > [xc_save]:
> > > > /usr/lib/xen/bin/xc_save 34 3 0 0 0
> > > > [2010-03-23 16:58:42 1023] INFO (XendCheckpoint:417)
> > xc_save:
> > > failed to
> > > > get the suspend evtchn port
> > > > [2010-03-23 16:58:42 1023] DEBUG (XendCheckpoint:388)
> > suspend
> > > > [2010-03-23 16:58:42 1023] INFO (XendCheckpoint:417)
> > > > [2010-03-23 16:58:42 1023] DEBUG (XendCheckpoint:113)
> In
> > > saveInputHandler
> > > > suspend
> > > > [2010-03-23 16:58:42 1023] DEBUG (XendCheckpoint:115)
> > Suspending 3
> > > ...
> > > > [2010-03-23 16:58:42 1023] DEBUG (XendDomainInfo:511)
> > > > XendDomainInfo.shutdown(suspend)
> > > > [2010-03-23 16:58:42 1023] DEBUG
> (XendDomainInfo:1709)
> > > > XendDomainInfo.handleShutdownWatch
> > > > [2010-03-23 16:58:42 1023] DEBUG
> (XendDomainInfo:1709)
> > > > XendDomainInfo.handleShutdownWatch
> > > > [2010-03-23 16:58:42 1023] INFO (XendDomainInfo:1903)
> Domain
> > has
> > > shutdown:
> > > > name=migrating-ubuntu1 id=3 reason=suspend.
> > > > [2010-03-23 16:58:42 1023] INFO (XendCheckpoint:121)
> Domain
> > 3
> > > suspended.
> > > > [2010-03-23 16:58:42 1023] DEBUG (XendCheckpoint:130)
> > Written done
> > > > [2010-03-23 16:58:42 1023] ERROR (XendCheckpoint:164)
> Save
> > failed
> > > on
> > > > domain ubuntu1 (3) - resuming.
> > > > Traceback (most recent call last):
> > > > File
> > >
> "/usr/lib/python2.6/dist-packages/xen/xend/XendCheckpoint.py",
> > line
> > > > 132, in save
> > > > forkHelper(cmd, fd, saveInputHandler, False)
> > > > File
> > >
> "/usr/lib/python2.6/dist-packages/xen/xend/XendCheckpoint.py",
> > line
> > > > 405, in forkHelper
> > > > raise XendError("%s failed" % string.join(cmd))
> > > > XendError: /usr/lib/xen/bin/xc_save 34 3 0 0 0 failed
> > > > [2010-03-23 16:58:42 1023] DEBUG
> (XendDomainInfo:2788)
> > > > XendDomainInfo.resumeDomain(3)
> > > > [2010-03-23 16:58:42 1023] DEBUG
> (XendDomainInfo:2829)
> > > > XendDomainInfo.resumeDomain: completed
> > > > [2010-03-23 17:01:10 1023] DEBUG
> (XendDomainInfo:2732)
> > > > XendDomainInfo.destroy: domid=3
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:2207)
> > Destroying
> > > device
> > > > model
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:2214)
> > Releasing
> > > devices
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:2227)
> > Removing
> > > vif/0
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:1134)
> > > > XendDomainInfo.destroyDevice: deviceClass = vif,
> device =
> > vif/0
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:2227)
> > Removing
> > > console/0
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:1134)
> > > > XendDomainInfo.destroyDevice: deviceClass = console,
> device
> > =
> > > console/0
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:2227)
> > Removing
> > > vbd/51713
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:1134)
> > > > XendDomainInfo.destroyDevice: deviceClass = vbd,
> device =
> > vbd/51713
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:2227)
> > Removing
> > > vbd/51714
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:1134)
> > > > XendDomainInfo.destroyDevice: deviceClass = vbd,
> device =
> > vbd/51714
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:2212) No
> > device
> > > model
> > > > [2010-03-23 17:01:11 1023] DEBUG
> (XendDomainInfo:2214)
> > Releasing
> > > devices
> > > >
> > > > my system configuration ( 32bit machine )
> > > > xen 3.4.2, dom0( jeremy's pvops kernel 2.6.31.6),
> domU(
> > vanilla
> > > kernel
> > > > 2.6.32 with paravirt enabled), distribution( ubuntu
> 9.10 )
> > > > It does not work well
> > > >
> > > > what is the problem??
> > > > I think current system is quite stable, newtork,
> disk, and
> > so on.
> > > > Is there anyone who know this or has experience??
> > > >
> > >
> > > You need to update your domU kernel to the latest stable
> update
> > > (2.6.32.10),
> > > and that'll fix the problem. 2.6.32(.0) doesn't yet have
> the
> > necessary
> > > save/restore fixes.
> > >
> > > -- Pasi
> > >
> > > --
> > > Eunbyung Park
> > >
> > > References
> > >
> > > Visible links
> >> > 1. mailto:[5]pasik@iki.fi
> > --
> > Eunbyung Park
> >
> > References
> >
> > Visible links
> > 2. mailto:[6]pasik@iki.fi
> > 3. mailto:[7]pasik@iki.fi
>> 4. mailto:pasik@iki.fi
> --
> Eunbyung Park
>
> References
>
> Visible links
> 1. mailto:pasik@iki.fi
> 2. mailto:pasik@iki.fi
> 3. mailto:pasik@iki.fi
> 5. mailto:pasik@iki.fi
> 6. mailto:pasik@iki.fi
> 7. mailto:pasik@iki.fi