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[Bug 1816189] Re: Unable to create or revert snapshots
From: |
Thomas Huth |
Subject: |
[Bug 1816189] Re: Unable to create or revert snapshots |
Date: |
Wed, 17 Feb 2021 08:20:15 -0000 |
Can you still reproduce this issue with the latest version of QEMU and
libvirt? Anyway, since the problem occurs with libvirt, have you already
tried to report this issue to the libvirt project instead?
** Changed in: qemu
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1816189
Title:
Unable to create or revert snapshots
Status in QEMU:
Incomplete
Bug description:
With an update to Qemu (3.1.x) I am unable to revert snapshots using
virt-manager or virsh. Virtual Machines existing before the update
seem to function properly. It is only after creating a new machine
that snapshots are misbehaving. I tested spinning up vms of
tumbleweed, leap15, and ubuntu 18.04. Each of them had the following
issues:
- With the machine running, live reversions act like they apply, but no
changes are actually made.
- With the machine paused, reversion also does not apply.
- With the machine turned off, reversion is not possible. Virsh is unable to
find the snapshot, and virt-manager errors out with:
Error running snapshot 'FreshInstall': internal error: qemu
unexpectedly closed the monitor: 2019-01-15T19:19:46.020247Z qemu-
system-x86_64: Device 'drive-virtio-disk0' does not have the requested
snapshot 'FreshInstall'
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 75, in
cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 111, in tmpcb
callback(*args, **kwargs)
File "/usr/share/virt-manager/virtManager/libvirtobject.py", line 66, in
newfn
ret = fn(self, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/domain.py", line 1105, in
revert_to_snapshot
self._backend.revertToSnapshot(snap.get_backend())
File "/usr/lib64/python3.6/site-packages/libvirt.py", line 2024, in
revertToSnapshot
if ret == -1: raise libvirtError ('virDomainRevertToSnapshot() failed',
dom=self)
libvirt.libvirtError: internal error: qemu unexpectedly closed the
monitor: 2019-01-15T19:19:46.020247Z qemu-system-x86_64: Device
'drive-virtio-disk0' does not have the requested snapshot
'FreshInstall'
After doing some digging, the error occurs because of the following commit:
d98f26073bebddcd3da0ba1b86c3a34e840c0fb8
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