From knarra at redhat.com Tue Apr 25 16:59:38 2017 Content-Type: multipart/mixed; boundary="===============7975435526348568166==" MIME-Version: 1.0 From: knarra To: users at ovirt.org Subject: Re: [ovirt-users] [Ovirt 4.0] HA VM fail to start on another Host. Date: Tue, 25 Apr 2017 22:29:30 +0530 Message-ID: <4d9e29ba-280f-835f-2946-e3b17d7c031d@redhat.com> In-Reply-To: CAOtQfMRTLi9TzecN9oUKsJ76WROESsQPsPUrp1wQELt7QJLUrg@mail.gmail.com --===============7975435526348568166== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable This is a multi-part message in MIME format. --------------AEDE804E92826637F85A7631 Content-Type: text/plain; charset=3Dwindows-1252; format=3Dflowed Content-Transfer-Encoding: 7bit On 04/25/2017 08:45 PM, TranceWorldLogic . wrote: > Hi, > > This is regarding HA VM fail to restart on other host. > > I have setup, which has 2 host in a cluster let say host1 and host2. > And one HA VM (with High priority), say vm1. > And also not storage domain is configure on host3 and it available all = > time. > > 1> Initially vm1 was running on host2. > 2> Then I power OFF host2 to see whether ovirt start vm1 on host1. > > I found two result in this case as below: > 1> Sometime vm1 retrying to start but retrying on host2 itself. > 2> Sometime vm1 move in down state without retrying. > > Can anyone explain about this behaviour ? Or Is this an issue ? > > Note : I am using Ovirt 4.0. > > Thanks, > ~Rohit > > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users Hi, If a host is powered off and if powermanagment is enabled engine = will fence the host and restarts it. During this process host residing = on the vm will be shutdown and will be restarted on another node. All = the events can be seen in the engine UI. Hope you have not missed to enable power management on the hosts. = with out enabling power management even if the vm is marked to be Highly = available it will not be. Second thing to check for is if the vm has guest-agent installed on = it. If the vm does not have guest-agent installed then it wont be = restarted on different host. More info on this can be found at [1]. [1] https://bugzilla.redhat.com/show_bug.cgi?id=3D1341106#c35 Thanks kasturi --------------AEDE804E92826637F85A7631 Content-Type: text/html; charset=3Dwindows-1252 Content-Transfer-Encoding: 8bit

On 04/25/2017 08:45 PM, TranceWorldLogic . wrote:

Hi,

This is regarding HA VM fail to restart on other host.

I have setup, which has 2 host in a cluster let say host1 and host2.

And one HA VM (with High priority), say vm1.

And also not storage domain is configure on host3 and it available all time.

1> Initially vm1 was running on host2.

2> Then I power OFF host2 to see whether ovirt start vm1 on host1.

I found two result in this case as below:

1> Sometime vm1 retrying to start but retrying on host2 itself.

2> Sometime vm1 move in down state without retrying.

Can anyone explain about this behaviour ? Or Is this an issue ?

Note : I am using Ovirt 4.0.

Thanks,

~Rohit
_______________________________________________
Users mailing list
Use=
rs(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users

Hi,

=C2=A0=C2=A0=C2=A0 =C2=A0 If a host is powered off and if powermanag= ment is enabled engine will fence the host and restarts it. During this process host residing on the vm=C2=A0 will be shutdown and will be restarted = on another node. All the events can be seen in the engine UI.

=C2=A0=C2=A0=C2=A0 Hope you have not missed to enable power manageme= nt on the hosts.=C2=A0 with out enabling power management even if the vm is marked to be Highly available it will not=C2=A0 be.

=C2=A0=C2=A0=C2=A0 Second thing to check for is if the vm has guest-= agent installed on it. If the vm does not have guest-agent installed then it wont be restarted on different host. More info on this can be found at=C2=A0 [1].

=C2=A0[1] https://bugzilla.redhat.com/sho= w_bug.cgi?id=3D1341106#c35

Thanks

kasturi

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