This is a multi-part message in MIME format. --------------8EE145726ABDD8AEC2774E7D Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 03/12/2018 01:50 PM, Yaniv Kaul wrote:
On Mon, Mar 12, 2018 at 1:40 PM, Andrei Verovski <andreil1@starlett.lv <mailto:andreil1@starlett.lv>> wrote:
Hi !
I have stubborn VM (Ubuntu 16.04 LTS) which randomly freezes about each 2 - 3 weeks at weekends (when load is close to zero). No updates or kernel upgrades help. Freeze is not detected by oVirt watchdog and VM is not automatically restarted.
Since it happens only on weekends, I suspect some weekly cron job may cause this. Ubuntu 16.04 LTS is installed on qcow2 disk image (thin provision). is it possible that fstrim (which discards / trims unused blocks) is a source of this problem ?
Are you using virtio-blk (which doesn't support it) or virtio-SCSI (which does)? Also, does the storage support trimming? Not all do.
I'm using virtio-SCSI, Ubuntu thin provision disk formatted as ext4 boot + ext4 root + swap. Disk image on ext4 RAID 1.
Y. =C2=A0
Thanks in advance Andrei
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--------------8EE145726ABDD8AEC2774E7D Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf= -8"> </head> <body bgcolor=3D"#FFFFFF" text=3D"#000000"> <div class=3D"moz-cite-prefix">On 03/12/2018 01:50 PM, Yaniv Kaul wrote:<br> </div> <blockquote type=3D"cite" cite=3D"mid:CAJgorsYr0C2Mn9TuqeE0huo+dO24W+uSQqQRQx9EUZaOPovYEw@mail.gmai= l.com"> <div dir=3D"ltr"><br> <div class=3D"gmail_extra"><br> <div class=3D"gmail_quote">On Mon, Mar 12, 2018 at 1:40 PM, Andrei Verovski <span dir=3D"ltr"><<a href=3D"mailto:andreil1@starlett.lv" target=3D"_blank" moz-do-not-send=3D"true">andreil1@starlett.lv</a>></sp= an> wrote:<br> <blockquote class=3D"gmail_quote" style=3D"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.</di= v> </div> </div> </div> </blockquote> <br> I'm using virtio-SCSI, Ubuntu thin provision disk formatted as ext4 boot + ext4 root + swap.<br> Disk image on ext4 RAID 1.<br> <br> <blockquote type=3D"cite" cite=3D"mid:CAJgorsYr0C2Mn9TuqeE0huo+dO24W+uSQqQRQx9EUZaOPovYEw@mail.gmai= l.com"> <div dir=3D"ltr"> <div class=3D"gmail_extra"> <div class=3D"gmail_quote"> <div>Y.</div> <div>=C2=A0</div> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <br> Thanks in advance<br> Andrei<br> <br> ______________________________<wbr>_________________<br> Users mailing list<br> <a href=3D"mailto:Users@ovirt.org" moz-do-not-send=3D"true"=
Users@ovirt.org</a><br> <a href=3D"http://lists.ovirt.org/mailman/listinfo/users" rel=3D"noreferrer" target=3D"_blank" moz-do-not-send=3D"t= rue">http://lists.ovirt.org/<wbr>mailman/listinfo/users</a><br> </blockquote> </div> <br> </div> </div> </blockquote> <p><br> </p> </body> </html>
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