[pve-devel] backup ceph high iops and slow

[VELARTIS Philipp Dürhammer]

HI,

we talked about this some month ago..
does anybody know if it will be improved soon?

So mainly ist a ceph problem. Or also should we communicate with the qemu devs?
making bigger backups now takes way to much time. Making a backup from a node wich has about 5tb will take  about 36 hours.... :-(



-----Ursprüngliche Nachricht-----
Von: pve-devel [mailto:pve-devel-bounces at pve.proxmox.com] Im Auftrag von Dmitry Petuhov
Gesendet: Freitag, 17. Oktober 2014 08:04
An: pve-devel at pve.proxmox.com
Betreff: Re: [pve-devel] backup ceph high iops and slow

16.10.2014 22:33, VELARTIS Philipp Dürhammer пишет:
> Why do backups with ceph make so high iops?
> I get around 600 iops for 40mb/sec which is by the way very slow for a backup.
> When I make a disk clone from local to ceph I get 120mb/sec (which is the network limit from the old proxmox nodes) and only around 100-120 iops which is the normal for a seq read with 120mb/sec...
> Is the vzdump making problems?
It's not vzdump's issue, but qemu's. See http://forum.proxmox.com/threads/19341-Ceph-backup

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   Дмитрий Петухов
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