[pbs-devel] applied-series: [PATCH proxmox-backup v9 0/4] refactor datastore locking to use tmpfs

Shannon Sterz s.sterz at proxmox.com
Thu Mar 27 11:02:35 CET 2025


On Wed Mar 26, 2025 at 4:36 PM CET, Thomas Lamprecht wrote:
> Am 26.03.25 um 12:44 schrieb Shannon Sterz:> The goal of this series is to make it safer to remove backup groups &
>> snapshots by separating the corresponding directories from their lock
>> files. By moving the lock files to the tmpfs-backed '/run' directory,
>> we also make sure that the lock files get cleaned up when the system
>> reboots.
>>
>> This series refactors the locking mechanism inside the `DataStore`,
>> `BackupDir` and `BackupGroup` traits. In a first step locking methods
>> are added and the existing code is refactored to use them. Commit two
>> derives a lock file name under '/run' for each group/snapshot. It also
>> adds double stat'ing. To avoid issues when upgrading, the file
>> `/run/proxmox-backup/old-locking` is created through a post-install
>> hook which is used to determine whether the system has been rebooted
>> and we can safely use the new locking mechanism.
>>
>> The third commit refactors locking for manifests and brings it in-line
>> with the group/snapshot locks. Finally, the last commit fixes a race
>> condition when changing the owner of a datastore.
>
>> Shannon Sterz (4):
>>   datastore/api/backup: prepare for fix of #3935 by adding lock helpers
>>   fix #3935: datastore/api/backup: move datastore locking to '/run'
>>   fix #3935: datastore: move manifest locking to new locking method
>>   fix: api: avoid race condition in set_backup_owner
>>
>
> applied series, added Wolfgang's Acked-by – feel encouraged to pick such
> things up already for a new revision, especially an A-b is less problematic
> with minor changes as long as the overall design stays the same – and also
> fixed a minor compile warning about an unused import that stemmed from
> intra-revision changes, thanks!

thanks a bunch! should i always add all trailers mentioned on list?
wasn't sure about the `Acked-by` tbh ^^'




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