[ovirt-users] Slow Export Domain

Wed Jun 22 08:34:07 EDT 2016

If I do that it won’t mount the share.

Von: Yaniv Kaul [mailto:ykaul at redhat.com]
Gesendet: Mittwoch, 22. Juni 2016 14:32
An: Sven Achtelik <Sven.Achtelik at mailpool.us>
Cc: Vinzenz Feenstra <vfeenstr at redhat.com>; Christophe TREFOIS <christophe.trefois at uni.lu>; users at ovirt.org
Betreff: Re: [ovirt-users] Slow Export Domain

You can change the mount options of the storage domain to v4.
Y.

On Wed, Jun 22, 2016 at 3:26 PM, Sven Achtelik <Sven.Achtelik at mailpool.us<mailto:Sven.Achtelik at mailpool.us>> wrote:
Hi,

I’ve done some testing and it turns out that my NFS-Server seems to be the limiting factor in combination with the used NFS version. The Server is a Windows Server 2012 R2 with “Service for Network File System” installed. I mounted the share from ovrit with the default nfs version 3 and it work but not more than 100Mbit/s and I don’t know why. When mounting the share on the host manually like so “mount –t nfs4 –o minorversion=1 172.16.6.7:/test /mnt/test/” I was able to get to about 400Mbit/s. It’s still far away from full speed  but that’s ok for me. I tried to change the NFS version in ovirt to V4, but with these settings the mount fails. It has to be NFS4.1 – can that be done over the GUI somehow or are there any other options ?

Thank you,

Sven

Von: Vinzenz Feenstra [mailto:vfeenstr at redhat.com<mailto:vfeenstr at redhat.com>]
Gesendet: Mittwoch, 22. Juni 2016 12:40
An: Christophe TREFOIS <christophe.trefois at uni.lu<mailto:christophe.trefois at uni.lu>>
Cc: Sven Achtelik <Sven.Achtelik at mailpool.us<mailto:Sven.Achtelik at mailpool.us>>; users at ovirt.org<mailto:users at ovirt.org>
Betreff: Re: [ovirt-users] Slow Export Domain

On Jun 22, 2016, at 12:31 PM, Christophe TREFOIS <christophe.trefois at uni.lu<mailto:christophe.trefois at uni.lu>> wrote:

Not true, we have seen significant slowness because of the way oVirt exports the VMs, as well as I/O.

Well all I wanted to say with this is, that there is no artificial limitation of the speed. At least not that I know of, if there’s an issue with the speed which is caused by a software issue on our side please do report a bug.

Best,
Dr Christophe Trefois, Dipl.-Ing.
Technical Specialist / Post-Doc
UNIVERSITÉ DU LUXEMBOURG

LUXEMBOURG CENTRE FOR SYSTEMS BIOMEDICINE
Campus Belval | House of Biomedicine
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On 22 Jun 2016, at 10:07, Vinzenz Feenstra <vfeenstr at redhat.com<mailto:vfeenstr at redhat.com>> wrote:

On Jun 22, 2016, at 9:39 AM, Sven Achtelik <Sven.Achtelik at mailpool.us<mailto:Sven.Achtelik at mailpool.us>> wrote:

Hi Everyone,

I’m trying to export VMs to an Export Domain for Backup and noticed that all of this is running at max 100Mbit/s. Is this some limitation that comes with the Export Domain ? I’ve checked all network connections and all of them report at least 1000Mbits/s.  Am I missing something ?

So from our side there’s no limitation. So there might be a router, switch or anything in between that does not support 1 GBit on your network. You’re really just limited here by Storage and/or Network bandwith.

Thank you,

Sven
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