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vzdump: increase timeout for QMP 'cont' after backup start

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Since 'backup' can now work asynchronously, QEMU may not be ready to
receive the next QMP command ('cont') immediately. Thus, increase the
timeout, to avoid aborted backups in slow environments.

There may be a deeper QEMU bug hidden under the covers here too, but at
least one user reported success with simply increasing the timeout:
https://forum.proxmox.com/threads/pve7-pbs2-backup-timeout-qmp-command-cont-failed-got-timeout.95212/page-2#post-426261

See also:
https://bugzilla.proxmox.com/show_bug.cgi?id=3693
https://forum.proxmox.com/threads/problem-seit-update-auf-7-0.97388/
https://forum.proxmox.com/threads/error-with-backup-when-backing-up-qmp-command-query-backup-failed-got-wrong-command-id.88017/page-3#post-416339

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
This commit is contained in:
Stefan Reiter 2021-10-27 13:34:54 +02:00 committed by Thomas Lamprecht
parent 23bee97d05
commit 6a5589010e
1 changed files with 1 additions and 1 deletions
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2
PVE/VZDump/QemuServer.pm
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@ -867,7 +867,7 @@ sub resume_vm_after_job_start {
} else {
$self->loginfo("resuming VM again");
}
mon_cmd($vmid, 'cont');
mon_cmd($vmid, 'cont', timeout => 45);
}
# stop again if VM was not running before