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Thanks, I'll check it out.

Il giorno mar 22 set 2020 alle ore 14:36 Gorka Eguileor <geguileo at redhat.com>
ha scritto:

> On 21/09, Ignazio Cassano wrote:
> > Hello stackers,
> > I am using cinder netapp nfs driver and I have vm performances problems
> > during the backup of volumes.
> > My backup tool make snapshots of volumes, then, on compute notes, it use
> > virt-convert for creating a volume backup on another nfs backend using a
> > different vlan.
> > But during the virt-convert a lot of read are done on netapp and my
> virtual
> > machines become very slow.
> > I am asking if volume_copy_bps_limit can help me to mitigate.
> >
> > Please, anyone could help me ?
> > Ignazio
>
> Hi,
>
> The volume_copy_bps_limit is a Cinder configuration parameter, and it is
> used only when Cinder does the copying, which doesn't seem to be your
> case.
>
> In your case it looks like the backup tool is accessing directly the
> compute hosts, so the throttling configuration should be done in the
> backup tool.
>
> If the backup tool doesn't support throttling, you can try using
> cgroups...
>
> Cheers,
> Gorka.
>
>
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