8:34 a.m.
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On 16 Sep 2016, at 15:31, aleksey.maksimov(a)it-kb.ru wrote:
=20
Hi Simone.
Exactly.
Now I'll put the journald on the guest and try to understand how the =
guest
off.
great. thanks
=20
16.09.2016, 16:25, "Simone Tiraboschi" <stirabos(a)redhat.com>:
> =20
> =20
> On Fri, Sep 16, 2016 at 3:13 PM, Michal Skrivanek =
<michal.skrivanek(a)redhat.com <mailto:michal.skrivanek@redhat.com>> =
wrote:
> =20
>> On 16 Sep 2016, at 15:05, Gianluca Cecchi <gianluca.cecchi(a)gmail.com =
<mailto:gianluca.cecchi@gmail.com>> wrote:
>> =20
>> On Fri, Sep 16, 2016 at 2:50 PM, Michal Skrivanek =
<michal.skrivanek(a)redhat.com <mailto:michal.skrivanek@redhat.com>> =
wrote:
>> =20
>> no, that=E2=80=99s not how HA works today. When you log into a guest =
and
issue =E2=80=9Cshutdown=E2=80=9D we do not restart the VM under your =
hands. We can argue how it should or may work, but this is the defined =
behavior since the dawn of oVirt.
>> =20
>>>=20
>>> =E2=80=8BAFAIK that's correct, we need to be able =E2=80=8B=E2=80=8B=
shutdown HA VM=E2=80=8B=E2=80=8B=E2=80=8B without being it immediately =
restarted on different host. We want to restart HA VM only if host, =
where HA VM is running, is non-responsive.
>> =20
>> we try to restart it in all other cases other than user initiated =
shutdown, e.g. a QEMU process crash on an otherwise-healthy host
>> =20
>> Hi, just another question in case HA is not configured at all.
> =20
> by =E2=80=9CHA configured=E2=80=9D I expect you=E2=80=99re referring =
to the
=E2=80=9CHighly Available=E2=80=9D checkbox in Edit VM dialog.
> =20
>>=20
>> If I run the "shutdown -h now" command on an host where some VMs are =
running, what is the expected behavior?
>> Clean VM shutdown (with or without timeout in case it
doesn't =
complete?) or crash of their related QEMU processes?
> =20
> expectation is that you won=E2=80=99t do that. That=E2=80=99s why =
there is
the Maintenance host state.
> But if you do that regardless, with VMs running, all the
processes =
will be terminated in a regular system way, i.e. all QEMU processes get
=
SIGTERM. =46rom the perspective of each guest this is not a clean =
shutdown and it would just get killed=20
> =20
> =20
> Aleksey is reporting that he started a shutdown on his host by power =
management and the VM processes didn't get roughly killed but smoothly =
shut down and so they didn't restarted regardless of their HA flag and =
so this thread.=20
Gianluca talks about =E2=80=9Cshutdown -h now=E2=80=9D, you talk about =
power management action, those are two different things. The current =
idea is that systemd or some other component just propagates the action =
to the guest and if that guest is configured to handle it as a shutdown =
it starts it itself as well so it looks like a user-initiated one. Even =
though this mostly makes sense it is not ok for current HA logic
> =20
> =20
> Thanks,
> michal
>>=20
>> =20
>> Thanks,
>> Gianluca
>> _______________________________________________
>> 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>
> _______________________________________________
> 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>
> =20
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
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<html><head><meta http-equiv=3D"Content-Type"
content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><br class=3D""><div><blockquote
type=3D"cite" class=3D""><div =
class=3D"">On 16 Sep 2016, at 15:31, <a =
href=3D"mailto:aleksey.maksimov@it-kb.ru" =
class=3D"">aleksey.maksimov(a)it-kb.ru</a> wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div
class=3D"">Hi =
Simone.</div><div class=3D"">Exactly.</div><div
class=3D"">Now I'll put =
the journald on the guest and try to understand how the guest =
off.</div></div></blockquote><div><br
class=3D""></div>great. =
thanks</div><div><br class=3D""><blockquote
type=3D"cite" class=3D""><div =
class=3D""><div class=3D""> </div><div
class=3D"">16.09.2016, =
16:25, "Simone Tiraboschi" <<a
href=3D"mailto:stirabos@redhat.com" =
class=3D"">stirabos@redhat.com</a>>:</div><blockquote
type=3D"cite" =
class=3D""><div class=3D""> <div
class=3D""> <div class=3D"">On =
Fri, Sep 16, 2016 at 3:13 PM, Michal Skrivanek <span
class=3D""><<a =
href=3D"mailto:michal.skrivanek@redhat.com" target=3D"_blank" =
class=3D"">michal.skrivanek(a)redhat.com</a>&gt;</span>
wrote:<blockquote =
style=3D"margin:0px 0px 0px =
0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-widt=
h:1px;border-left-style:solid;" class=3D""><div
class=3D""> <div =
class=3D""><blockquote type=3D"cite"
class=3D""><div class=3D""><span =
class=3D"">On 16 Sep 2016, at 15:05, Gianluca Cecchi <<a =
href=3D"mailto:gianluca.cecchi@gmail.com" target=3D"_blank" =
class=3D"">gianluca.cecchi(a)gmail.com</a>&gt; =
wrote:</span></div> <div class=3D""><div
class=3D""><div =
class=3D""><div class=3D""><span
class=3D"">On Fri, Sep 16, 2016 at 2:50 =
PM, Michal Skrivanek <span class=3D""><<a =
href=3D"mailto:michal.skrivanek@redhat.com" target=3D"_blank" =
class=3D"">michal.skrivanek(a)redhat.com</a>&gt;</span> =
wrote:</span><blockquote style=3D"margin:0px 0px 0px =
0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-widt=
h:1px;border-left-style:solid;" class=3D""><div
class=3D""><div =
class=3D""><div class=3D""> </div><span
class=3D"">no, that=E2=80=99s=
not how HA works today. When you log into a guest and issue =
=E2=80=9Cshutdown=E2=80=9D we do not restart the VM under your hands. We =
can argue how it should or may work, but this is the defined behavior =
since the dawn of oVirt.</span></div><div
class=3D""> <blockquote =
type=3D"cite" class=3D""><div class=3D""><div
class=3D""><div =
class=3D""><div class=3D""><div
class=3D""> <div =
style=3D"font-family:arial,helvetica,sans-serif;display:inline;" =
class=3D""><span class=3D""><span
class=3D"">=E2=80=8BAFAIK that's =
correct, we need to be able =E2=80=8B</span></span></div><div =
style=3D"font-family:arial,helvetica,sans-serif;display:inline;" =
class=3D""><span class=3D""><span
class=3D"">=E2=80=8Bshutdown HA =
VM=E2=80=8B</span></span></div><span class=3D""><span
=
class=3D"">=E2=80=8B</span></span><div =
style=3D"font-family:arial,helvetica,sans-serif;display:inline;" =
class=3D""><span class=3D""><span
class=3D"">=E2=80=8B without being it =
immediately restarted on different host. We want to restart HA VM only =
if host, where HA VM is running, is =
non-responsive.</span></span></div></div></div></div></div></div></blockqu=
ote><div class=3D""> </div><span
class=3D"">we try to restart it in =
all other cases other than user initiated shutdown, e.g. a QEMU process =
crash on an otherwise-healthy host</span></div><div
class=3D""><div =
class=3D""><div =
class=3D""> </div></div></div></div></blockquote></div></div><div
=
class=3D""><span class=3D"">Hi, just another question in case
HA is not =
configured at
all.</span></div></div></div></blockquote><div =
class=3D""> </div>by =E2=80=9CHA configured=E2=80=9D I expect
=
you=E2=80=99re referring to the =E2=80=9CHighly Available=E2=80=9D =
checkbox in Edit VM dialog.</div><div
class=3D""> <blockquote =
type=3D"cite" class=3D""><div class=3D""><div
class=3D""><div =
class=3D""><span class=3D"">If I run the "shutdown -h
now" command on an =
host where some VMs are running, what is the expected =
behavior?</span></div><div class=3D""><span
class=3D"">Clean VM shutdown =
(with or without timeout in case it doesn't complete?) or crash of their =
related QEMU
processes?</span></div></div></div></blockquote><div =
class=3D""> </div>expectation is that you won=E2=80=99t do
that. =
That=E2=80=99s why there is the Maintenance host state.</div><div =
class=3D"">But if you do that regardless, with VMs running, all the =
processes will be terminated in a regular system way, i.e. all QEMU =
processes get SIGTERM. =46rom the perspective of each guest this is not =
a clean shutdown and it would just get killed </div><div =
class=3D""> </div></div></blockquote><div
class=3D""> </div><div=
class=3D"">Aleksey is reporting that he started a shutdown on his host =
by power management and the VM processes didn't get roughly killed =
but smoothly shut down and so they didn't restarted regardless of their =
HA flag and so this =
thread. </div></div></div></div></blockquote></div></blockquote><div>=
<br class=3D""></div>Gianluca talks about =E2=80=9Cshutdown -h
now=E2=80=9D=
, you talk about power management action, those are two different =
things. The current idea is that systemd or some other component just =
propagates the action to the guest and if that guest is configured to =
handle it as a shutdown it starts it itself as well so it looks like a =
user-initiated one. Even though this mostly makes sense it is not ok for =
current HA logic</div><div><br class=3D""><blockquote
type=3D"cite" =
class=3D""><div class=3D""><blockquote
type=3D"cite" class=3D""><div =
class=3D""><div class=3D""><div
class=3D""><div =
class=3D""> </div><blockquote style=3D"margin:0px 0px
0px =
0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-widt=
h:1px;border-left-style:solid;" class=3D""><div
class=3D""><div =
class=3D""> </div><div
class=3D"">Thanks,</div><div =
class=3D"">michal<blockquote type=3D"cite"
class=3D""><div class=3D""><div=
class=3D""><div class=3D""> </div><div
class=3D"">Thanks,</div><div =
class=3D"">Gianluca</div></div><span =
class=3D"">_______________________________________________<br =
class=3D"">Users mailing list<br class=3D""><a =
href=3D"mailto:Users@ovirt.org" target=3D"_blank" =
class=3D"">Users(a)ovirt.org</a><br class=3D""><a =
href=3D"http://lists.ovirt.org/mailman/listinfo/users"
target=3D"_blank" =
class=3D"">http://lists.ovirt.org/mailman/listinfo/users<...
/blockquote></div></div><br =
class=3D"">_______________________________________________<br =
class=3D"">Users mailing list<br class=3D""><a =
href=3D"mailto:Users@ovirt.org"
class=3D"">Users(a)ovirt.org</a><br =
class=3D""><a
href=3D"http://lists.ovirt.org/mailman/listinfo/users" =
target=3D"_blank" =
class=3D"">http://lists.ovirt.org/mailman/listinfo/users<... =
class=3D""> </blockquote></div></div></div></blockquote>_____________=
__________________________________<br class=3D"">Users mailing list<br
=
class=3D""><a href=3D"mailto:Users@ovirt.org" =
class=3D"">Users(a)ovirt.org</a><br =
class=3D"">http://lists.ovirt.org/mailman/listinfo/users<br =
class=3D""></div></blockquote></div><br
class=3D""></body></html>=
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