10:07 a.m.
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----- Original Message -----
From: "Alex Leonhardt" <alex.tuxx(a)gmail.com>
To: "Dan Kenigsberg" <danken(a)redhat.com>
Cc: "oVirt Mailing List" <users(a)ovirt.org>
Sent: Wednesday, April 17, 2013 1:02:25 AM
Subject: Re: [Users] save to restart libvirtd ?
would that stop any of the running VMs ?
it shouldn't, but if you have ovirt engine running, make sure that power management
not active for this host,
since after timeout (usually 1 minute) when vdsm is down, the host will be fenced
(restarted) - then the vms will surely stop..
look at http://www.ovirt.org/Automatic_Fencing for more info about automatic fencing in
engine.
alex
On 04/16/2013 09:47 PM, Dan Kenigsberg wrote:
> On Mon, Apr 15, 2013 at 05:12:35PM +0200, Martin Kletzander wrote:
> > On 04/15/2013 03:39 PM, Alex Leonhardt wrote:
>
> > > Hi,
> >
>
> > > I believe it's save, but just wanted to re-check,
is it save to restart
> >
>
> > > libvirtd on a HV running ~40 VMs ?
> >
>
> > Hi,
>
> > for libvirt questions, I'd rather use
libvirt-users(a)redhat.com , but for
>
> > this particular one, I can confirm that libvirt is written in a way that
>
> > enables it to be restarted without any impact on the machines which are
>
> > being ran.
>
> > Of course I can't say "nothing will happen"
due to the fact that every
>
> > single time something can happen, but nothing _should_ happen to any of
>
> > your machines.
>
> Indeed. Vdsm should notice that libvirtd has died, and restart
itself.
> However, it would be safer to stop Vdsm explicitly before you do that
> (for example http://gerrit.ovirt.org/8283 )
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<html><body><div style=3D"font-family: times new roman, new york,
times, se=
rif; font-size: 12pt; color:
#000000"><div><br></div><div><br></div><hr
id=
=3D"zwchr"><blockquote style=3D"border-left:2px solid
#1010FF;margin-left:5=
px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-de=
coration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-=
mce-style=3D"border-left: 2px solid #1010FF; margin-left: 5px; padding-left=
: 5px; color: #000; font-weight: normal; font-style: normal; text-decoratio=
n: none; font-family: Helvetica,Arial,sans-serif; font-size:
12pt;"><b>From=
: </b>"Alex Leonhardt"
&lt;alex.tuxx(a)gmail.com&gt;<br><b>To: </b>"Dan Kenig=
sberg" &lt;danken(a)redhat.com&gt;<br><b>Cc: </b>"oVirt
Mailing List" <use=
rs(a)ovirt.org&gt;<br><b>Sent: </b>Wednesday, April 17, 2013 1:02:25
AM<br><b=
Subject: </b>Re: [Users] save to restart libvirtd
?<br><div><br></div><spa=
n
size=3D"-1"><span style=3D"font-family: Tahoma;"
data-mce-style=3D"font-f=
amily: Tahoma;" face=3D"Tahoma">would that stop any of the running VMs
?<br=
<br> </span></span></blockquote><div>it
shouldn't, but if you have ovirt =
engine running, make sure that power
management not active for this host,<b=
r></div><div>since after timeout (usually 1 minute) when vdsm is down, the
=
host will be fenced (restarted) - then the vms will surely stop..<br></div>=
<div>look at <a href=3D"http://www.ovirt.org/Automatic_Fencing
">http://www=
.ovirt.org/Automatic_Fencing </a>for more info about automatic fencing in e=
ngine.<br></div><blockquote style=3D"border-left:2px solid
#1010FF;margin-l=
eft:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;te=
xt-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" =
data-mce-style=3D"border-left: 2px solid #1010FF; margin-left: 5px; padding=
-left: 5px; color: #000; font-weight: normal; font-style: normal; text-deco=
ration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><s=
pan size=3D"-1"><span style=3D"font-family: Tahoma;"
data-mce-style=3D"font=
-family: Tahoma;" face=3D"Tahoma">alex<br>
</span></span><br>On 04/16/2013 =
09:47 PM, Dan Kenigsberg wrote:<blockquote cite=3D"mid:20130416204759.GK592=
5(a)redhat.com"><pre>On Mon, Apr 15, 2013 at 05:12:35PM +0200, Martin
Kletzan=
der wrote:
</pre><blockquote><pre>On 04/15/2013 03:39 PM, Alex Leonhardt wrote:
</pre><blockquote><pre>Hi,
I believe it's save, but just wanted to re-check, is it save to restart
libvirtd on a HV running ~40 VMs ?
</pre></blockquote><pre>Hi,
for libvirt questions, I'd rather use <a
class=3D"moz-txt-link-abbreviated"=
href=3D"mailto:libvirt-users@redhat.com" target=3D"_blank"
data-mce-href=
=3D"mailto:libvirt-users@redhat.com">libvirt-users@redhat.com</a>, but
for
this particular one, I can confirm that libvirt is written in a way that
enables it to be restarted without any impact on the machines which are
being ran.
Of course I can't say "nothing will happen" due to the fact that every
single time something can happen, but nothing _should_ happen to any of
your machines.
</pre></blockquote><pre>Indeed. Vdsm should notice that libvirtd has
died, =
and restart itself.
However, it would be safer to stop Vdsm explicitly before you do that
(for example <a class=3D"moz-txt-link-freetext"
href=3D"http://gerrit.ovirt=
.org/8283" target=3D"_blank"
data-mce-href=3D"http://gerrit.ovirt.org/8283"=
</pre></blockquote><br>_______________________________________________<br>U=
sers mailing list<br>Users@ovirt.org<br>http://lists.ovirt.org/mailman/list=
info/users<br></blockquote><div><br></div></div></body></html>
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