Problem:
* With an audiodev defined qemu sends data on migration that breaks the
receiving end.
Solution:
* The fix stops sending a state that isn't needed it is fixed on the source)
and thereby
fixes the migration.
Not important for SRU (under libvirt use cases):
* This did happen to impish because
- new libvirt/qemu will auto-add -audiodev now
- old libvirt (pre impish <v7.2.0) did not do so.
* Old releases seem not to be affected
- Their libvirt used an environment variable like
QEMU_AUDIO_DRV=spice
on guest start
* Strictly speaking manual use cases of qemu could have
been affected
Big chunks of -audiodev for qemu got added in:
4.0
https://gitlab.com/qemu-project/qemu/-/commit/33f18cf7
4.2
https://gitlab.com/qemu-project/qemu/-/commit/cfc3fef6
Focal is 4.2, so therefor SRU it up to there.
* But since it is sound the use cases would be more desktop'ish
(less likely to migrate) and furthermore without libvirt which takes
care of so many quirks for migration (also making it less likely
to be a real case)
The common non-libvirt use cases through lxd-vm and multipass do not do
migration yet and even would bump their qemu to a new version that is
fixed.
Please understand me - I think there is no reason "against" SRUing this back to
Focal.
But someone would have to outline a reasonable use-case in Focal/Hirsute that
needs this.
P.S. before Focal it isn't needed as -audiodev didn't exist
** Changed in: qemu (Ubuntu Impish)
Status: Triaged => Fix Committed
** Changed in: qemu (Ubuntu Hirsute)
Status: Triaged => Won't Fix
** Changed in: qemu (Ubuntu Focal)
Status: Triaged => Won't Fix
** Changed in: qemu (Ubuntu Focal)
Importance: Medium => Wishlist
** Changed in: qemu (Ubuntu Hirsute)
Importance: Medium => Wishlist
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1940288
Title:
migration broken by audio dev
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1940288/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
