<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 12, 2018 at 1:40 PM, Andrei Verovski <span dir="ltr"><<a href="mailto:andreil1@starlett.lv" target="_blank">andreil1@starlett.lv</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>
<br>
I have stubborn VM (Ubuntu 16.04 LTS) which randomly freezes about each 2 - 3 weeks at weekends (when load is close to zero).<br>
No updates or kernel upgrades help.<br>
Freeze is not detected by oVirt watchdog and VM is not automatically restarted.<br>
<br>
Since it happens only on weekends, I suspect some weekly cron job may cause this.<br>
Ubuntu 16.04 LTS is installed on qcow2 disk image (thin provision).<br>
is it possible that fstrim (which discards / trims unused blocks) is a source of this problem ?<br></blockquote><div><br></div><div>Are you using virtio-blk (which doesn't support it) or virtio-SCSI (which does)?</div><div>Also, does the storage support trimming? Not all do.</div><div>Y.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Thanks in advance<br>
Andrei<br>
<br>
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