[PVE-User] Volume chain snapshotting

[Fiona Ebner]

Am 24.11.25 um 4:55 PM schrieb g.husson_proxmox-pve-user--- via pve-user:
> 2. The best summary I have red about snapshots over iSCSI is : https://kb.blockbridge.com/technote/proxmox-qcow-snapshots-on-lvm/
> 
> Le 24/11/2025 à 15:42, Mark Schouten via pve-user a écrit :
>> Hi all,
>> 2: Why is this in status ’Technology Preview’? What are the risks that
>> are in the back of the heads of the developers? Or is it mainly ’there
>> might be bugs, but we expect dataconsistency to be OK’?

Yes, the blockbridge article is one of the things that still need to be
considered.

We did still have quite a few bug fixes between the 9.0 and 9.1 release,
see the qemu-server and libpve-storage-perl changelogs, mostly
relatively minor stuff, but also one case of LVM metadata corruption,
because of missing locking in some edge cases. So the feature is still
in the process of maturing. We cannot 100% guarantee no corruption, but
will be looked into immediately if something pops up (nothing else has
as of yet).

Another mostly cosmetic issue that would be nice to get fixed is size
reporting while the LVs are inactive, i.e.
https://bugzilla.proxmox.com/show_bug.cgi?id=6819

Best Regards,
Fiona