[PVE-User] Proxmox with ceph storage VM performance strangeness

Rainer Krienke krienke at uni-koblenz.de
Thu Apr 23 13:03:15 CEST 2020

On top I use xfs.

Just curious: Why did you ask :-) ?


Am 22.04.20 um 17:03 schrieb Alwin Antreich:
> On Wed, Apr 22, 2020 at 12:43:58PM +0200, Rainer Krienke wrote:
>> hello,
>> there is no single workload, but a bunch of VMs the do a lot of
>> different things many of which do not special performance
>> demands. The VMs that do need speed are NFS Fileservers and SMBservers.
>> And exactly these servers seem to benefit from the larger block size.
>> The two I tested mostly on are fileservers.
> I am curious, so your setup is a striped LVM with what filesystem on top?
>> Aside from  bonnie++ I also tested writing and reading files especially
>> many small ones. This also works very good and a fact that at the
>> beginning of my search was not true is now: The proxmox/ceph solution is
>> faster and in some disciplines much faster than the old xenbased with
>> ISCSI storage as a backend.
> Nice to hear. :)
> --
> Cheers,
> Alwin

Rainer Krienke, Uni Koblenz, Rechenzentrum, A22, Universitaetsstrasse  1
56070 Koblenz, Web: http://www.uni-koblenz.de/~krienke, Tel: +49261287 1312
PGP: http://www.uni-koblenz.de/~krienke/mypgp.html,     Fax: +49261287

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