Hi Andrea,
thanks for the insight; no I wasn't able to pinpoint the issue to a
single host, the load seems to be evenly spread.
We have another cluster running 4.0.6 on a compellent as well and we
haven't experienced any similar issues.
Thanks,
Andrea
On 10/02/2017 17:17, Andrea Ghelardi wrote:
Hello Andrea,
I saw that happening on my HE hosts connected to a COMPELLENT SC040 when I was
running Ovirt 3.5
All HE hosts were hammering the SAN with 2~4k IOPS each
Upgrading to 4.0.5 solved my case.
Are you able to check if IOPS are generated from a particular host or rather
spread among all nodes?
Cheers
AG
-----Original Message-----
From: users-boun...@ovirt.org [mailto:users-boun...@ovirt.org] On Behalf Of
Andrea Fagiani
Sent: Friday, February 10, 2017 12:47 PM
To: users@ovirt.org
Subject: [ovirt-users] high number of IOPS from ovirt hosts
Hi,
We've got a 8-host cluster running oVirt 4.1; each host is connected via iscsi
to a EQL 4100 storage (2x).
Most of the VMs use barely any IOPS, however on our storage controller we've
noticed a constant steam of reads, about 2000 IOPS; any idea what might cause
the ovirt hosts to hammer on the storage so much?
Looking at iotop, it seems that systemd-udevd is being activated every few
seconds (and its IO% is usually fairly high) so I assume this might be somehow
related.
Thanks,
Andrea
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