12:40 p.m.
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 ?
Thanks in advance
Andrei
12:50 p.m.
On Mon, Mar 12, 2018 at 1:40 PM, Andrei Verovski <andreil1(a)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.
Y.
Thanks in advance
Andrei
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Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
1:50 p.m.
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On 03/12/2018 01:50 PM, Yaniv Kaul wrote:
On Mon, Mar 12, 2018 at 1:40 PM, Andrei Verovski <andreil1(a)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
_______________________________________________
Users mailing list
Users(a)ovirt.org <mailto:Users@ovirt.org>
http://lists.ovirt.org/mailman/listinfo/users
<http://lists.ovirt.org/mailman/listinfo/users>
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<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(a)starlett.lv</a>&gt;</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>
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moz-do-not-send=3D"true"=
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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<...
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
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2242
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2 comments
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Andrei Verovski -
Yaniv Kaul