debian sid guest not able to restore from saved state(running)

[Sasa Paporovic]

I am on Ubuntu12.04 64 bit updated to 14.4.2012.

I have just to continue a debian sid guest from saved state. That failed.

The guest was saved with qemu-kvm1...ubuntu11 and now I have tried to restart it with qemu-kvm1...ubuntu13, which may be has caused that trouble.

The kernel.log of the host shows not any speciall to me, but will be attached(also the syslog).

The guest shows an eroor screen with a stacktrace of the problem(sid has the kenrel 3.2.x in sid), which might be helpfull, but I can only attach it as screenshot.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: qemu-kvm 1.0+noroms-0ubuntu13
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
ApportVersion: 2.0.1-0ubuntu2
Architecture: amd64
Date: Sat Apr 14 13:18:21 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64+mac (20120328)
MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7596
ProcEnviron:
 PATH=(custom, no username)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=00ec9d51-a52f-4879-b208-5bf9136b7e49 ro quiet splash vt.handoff=7
SourcePackage: qemu-kvm
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/03/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.8
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 760GM -E51 (MS-7596)
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.8:bd09/03/2010:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7596:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rn760GM-E51(MS-7596):rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0:
dmi.product.name: MS-7596
dmi.product.version: 1.0
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD

[Sasa Paporovic (melchiaros)]

The guest sends after 120 sec additional timeout(kernelhung) messages.

[Sasa Paporovic (melchiaros)]

I have to give the additional information that a forces quit of the debian sid guest and a normal start after performs a normal boot of the guest.

So, it is only a problem with saved state guests and/or qemu-kvm updates of the host between saving and resuming a guest.

[Serge Hallyn (serge-hallyn)]

Thanks for reporting this bug.

Can you tell me exactly how you performed the save/restore?

If you used libvirt, can you also give me the guest xml?

Are you able to save/restore now, from/to the same kernel+qemu-kvm version?

[Sasa Paporovic (melchiaros)]

Q:Can you tell me exactly how you performed the save/restore?

A:I have used virt-manager and with this the graphical option for save. Restoring is in virt-manager just starting the vm again.

Q:If you used libvirt, can you also give me the guest xml?

A:Yes, I attach it.

Q:Are you able to save/restore now, from/to the same kernel+qemu-kvm version?

A: After restarting the host the updated version works fine as far as I could saw at this thime. So it is only on the switch between the versions which makes problems for saved states from the old version.

[Sasa Paporovic (melchiaros)]

I have clones here. I am relativly sure that it is this, but I attach also the second possible vm xml.

[Sasa Paporovic (melchiaros)]

Ohh, I have accidently attached the logs and not the guest xml.

 I correct this.