[pve-devel] qemu 7.0 : fleecing backup (aka: local temp write cache"

Laurent GUERBY laurent at guerby.net
Sun Jul 31 19:47:37 CEST 2022


On Sun, 2022-07-31 at 16:49 +0000, DERUMIER, Alexandre wrote:
> Le 31/07/22 à 18:19, Dietmar Maurer a écrit :
> > > This is really a blocker for me,I can't use pbs because I'm using
> > > nvme
> > > is production, and a 7200k hdd backup in a remote 200km site with
> > > 5ms
> > > latency.
> > 
> > Why don't you use a local(fast) PBS instance, then sync to the slow
> > remote?
> > 
> 
> Hi Dietmar.
> 
> Can I use a small local fast PBS instance without need to keep the
> full 
> datastore chunks ?
> 
> I have 300TB nvme in production, I don't want to buy 300TB nvme for
> backup.
> 
> I known that I can keep more retentions on remote storage slow, but
> what 
> about the local fast pbs ?
> 

Hi Alexandre,

I had the exact same issue:

https://forum.proxmox.com/threads/partial-sync-job-pre-prune.106441/

Here is the bugzilla:

https://bugzilla.proxmox.com/show_bug.cgi?id=3701

So no AFAIK there's no way to do a partial sync. A tool to sync a
specific backup (instead of a group) and a bit of scripting would do
the job.

Sincerely,

Laurent

> 
> 
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