<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 10, 2017 at 12:46 PM, Andrea Fagiani <span dir="ltr"><<a href="mailto:andrea.fagiani@immobiliare.it" target="_blank">andrea.fagiani@immobiliare.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
We've got a 8-host cluster running oVirt 4.1; each host is connected via iscsi to a EQL 4100 storage (2x).<br>
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?<br>
<br>
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.<br></blockquote><div><br></div><div>mmmh this could be an hint: how many LUNs are you exposing on the iSCSI portal used for the hosted-engine LUN?</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Thanks,<br>
Andrea<br>
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