[pbs-devel] [RFC PATCH v2 proxmox-backup{, -qemu}, pve-{qemu, manager}, qemu-server 0/7] fix #4289: Set protected flag on backup creation

[Thomas Lamprecht]

Am 25/01/2023 um 13:18 schrieb Christoph Heiss:
> When a datastore has the "Verify New Snapshots" flag set and a backup
> with the protected flag set is created (e.g. using `vzdump --protected 1
> ..`), the job might fail in the final stages due to a locking race. The
> "Verify New Snapshots" flag means that backups are immediately locked for
> verification as soon as their transfer is finished and the `/finish`
> endpoint is called.
> 
> If vzdump then tries to set the `protected` flag on that backup, it can
> fail due to being currently locked by the verification task.

but the protection flag resides in the "unprotected" part of the manifest,
and IMO it seems very odd that I cannot change a protection flag if verification
is running, which can happen anytime not only on verify-new.

So why not adapt this that protection can be changed independent of verification,
which would require zero client changes and make for a better UX in general -
albeit it certainly needs some well thought out (lock) handling.