[pve-devel] Proposal: support for atomic snapshot of all VM disks at once

[Daniel Berteaud]

----- Le 4 Oct 24, à 17:13, Dietmar Maurer dietmar at proxmox.com a écrit :

> We already make sure that shaphots of a group of volumes are atomic at qemu
> level (VM is halted while snapshots are created), so I wonder
> if there is any real advantage here?

I think there could be one advantage : reduce the freez time during snapshot. I take regular snapshots of my VM, and it causes timeshifts of a few seconds (which chronyd inside the guest takes a bit a time to correct). It's just a 1-4 sec, but it can cause issues. One example is minio, when used with an OIDC login (as minio doesn't support any clock skew, login can fail if minio lags just a few seconds behind the IDP)

++

-- 
Daniel Berteaud