[pve-devel] [PATCH qemu 1/2] fix #4476: savevm-async: avoid looping without progress

Fiona Ebner f.ebner at proxmox.com
Thu Feb 9 10:30:05 CET 2023

Should we include this before rolling out QEMU 7.2 to public
repositories? Will always trigger with large disk(s), when doing a PBS
backup and at any later time a snapshot/hibernation. It's not a new
problem, but there were a few reports recently, and 7.2-rollout seems
like a good time.

Am 26.01.23 um 14:46 schrieb Fiona Ebner:
> when pend_postcopy is large. By definition, pend_postcopy won't
> decrease when iterating, so a value larger than the cutoff of 400000
> would lead to essentially empty iterations, filling up the state file
> until only 30 MiB + pending_size remain and the second half of the
> check would trigger.
> Avoid this, by not considering pend_postcopy for the cutoff to enter
> the final phase.
> Signed-off-by: Fiona Ebner <f.ebner at proxmox.com>

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