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[Qemu-devel] [Bug 1123975] Re: QEmu 1.3+ cannot restore a 1.1- live snap

From: Thomas Huth
Subject: [Qemu-devel] [Bug 1123975] Re: QEmu 1.3+ cannot restore a 1.1- live snapshot made in qemu-kvm
Date: Fri, 04 Nov 2016 13:59:46 -0000

I think we can close this ticket nowdays - as Michael mentioned in
comment #4, migration between qemu-kvm and qemu was not supported, and
the mentioned versions are pretty much outdated now anyway.

** Changed in: qemu
       Status: Confirmed => Won't Fix

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  QEmu 1.3+ cannot restore a 1.1- live snapshot made in qemu-kvm

Status in QEMU:
  Won't Fix

Bug description:
  I have upgraded to QEmu 1.3.90 (Debian 1.4.0~rc0+dfsg-1exp) but now
  when I try to restore a live snapshot made in QEmu 1.1.2 (Debian
  1.1.2+dfsg-5) I get the following message:

  virsh # snapshot-revert fgtbbuild wtb
  error: operation failed: Error -22 while loading VM state

  I have test VMs with live snapshots coreresponding to different
  testing configurations. So I typically revert the VMs in one of the
  live snapshots and run the tests. It would be pretty annoying to have
  to recreate all these live snapshots any time I upgrade QEmu.

  ipxe-qemu                              1.0.0+git-20120202.f6840ba-3
  qemu                                   1.4.0~rc0+dfsg-1exp
  qemu-keymaps                           1.4.0~rc0+dfsg-1exp
  qemu-kvm                               1.4.0~rc0+dfsg-1exp
  qemu-system                            1.4.0~rc0+dfsg-1exp
  qemu-system-arm                        1.4.0~rc0+dfsg-1exp
  qemu-system-common                     1.4.0~rc0+dfsg-1exp
  qemu-system-mips                       1.4.0~rc0+dfsg-1exp
  qemu-system-misc                       1.4.0~rc0+dfsg-1exp
  qemu-system-ppc                        1.4.0~rc0+dfsg-1exp
  qemu-system-sparc                      1.4.0~rc0+dfsg-1exp
  qemu-system-x86                        1.4.0~rc0+dfsg-1exp
  qemu-user                              1.4.0~rc0+dfsg-1exp
  qemu-utils                             1.4.0~rc0+dfsg-1exp
  libvirt-bin                            1.0.2-1
  libvirt-dev                            1.0.2-1
  libvirt-doc                            1.0.2-1
  libvirt-glib-1.0-0                     0.1.2-1
  libvirt0                               1.0.2-1
  libvirtodbc0                           6.1.4+dfsg1-5

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