[PVE-User] I try hard but...
e.kasper at proxmox.com
Thu Oct 29 11:35:56 CET 2015
On 10/26/2015 02:25 PM, Dmitry Petuhov wrote:
> There's issue with NFS: if you try to send over it more than network can deal
> with (100-120 MBps for 1-gigabit), it imposes several-second pauses, which are
> being interpreted like hardware errors. These bursts may be just few seconds
> long to trigger issue.
> You can try to limit bandwidth in virtual HDD config to something like 60-70
> MBps. This should be enough for 1-gigabit network.
> But my opinion is that it's better to switch to iSCSI.
Is that something that you can easily reproduce ? ( dd with conv=fsync
or other tool)
I do have heard about transient problems from NFS Servers at some
hosters, when running vzdump on a NFS target, the backup would hang at
some point because the NFS connection was lost.
Up to know I though this was caused by some kind of network throttling
done by the hoster, which was causing the traffic to be blocked longer
that the NFS timeout.
More information about the pve-user