From: Andrew Cathrow <acathrow@redhat.com>
To: Riccardo Veraldi <Riccardo.Veraldi@cnaf.infn.it>
Cc: kvm@vger.kernel.org
Subject: Re: live migration problems.
Date: Fri, 30 Mar 2012 17:58:25 -0400 (EDT) [thread overview]
Message-ID: <29021590.158.1333144756986.JavaMail.acathrow@0.0.0.0> (raw)
In-Reply-To: <4F76298B.4020804@cnaf.infn.it>
----- Original Message -----
> From: "Riccardo Veraldi" <Riccardo.Veraldi@cnaf.infn.it>
> To: kvm@vger.kernel.org
> Sent: Friday, March 30, 2012 5:45:47 PM
> Subject: live migration problems.
>
> Hello,
> I have problems with live migration.
> I have several VMs in a CentOS 6.2 cluster environment.
>
> When I migrate one virtual machine from nodeA to nodeB the migration
> goes smoothly but
> in the same time the VM is migrated an external ping cannot reach the
> VM.
> I ping the VM before migration and after the migration is done ping
> stops to work.
> This happens for some VM and does not happen for other VM.
> Apparently the VM are configured the same way so I can't understand
> why
> this is happening.
> If I migrate the VM back to the original physical node the ping start
> working again like if the switch did not
> realize the VM mac address changed switch port.
> To make things work always I Should make a ping from the VM console
> to
> whatever host and
> in this case the arp table is updated on the switch.
> The strange thing as I said is that some VM seems to always work
> after
> migration while other
> seems never to work untl they are migrated back to original cluster
> node.
> Any hints or suggestions ?
Make sure you have DELAY=0 set in the ifcfg file for the bridge on both hosts.
>
> thank you very much
>
> Rick
>
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
next prev parent reply other threads:[~2012-03-30 21:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-30 21:45 live migration problems Riccardo Veraldi
2012-03-30 21:58 ` Andrew Cathrow [this message]
2012-03-31 12:25 ` Riccardo Veraldi
2012-03-31 12:35 ` Riccardo Veraldi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=29021590.158.1333144756986.JavaMail.acathrow@0.0.0.0 \
--to=acathrow@redhat.com \
--cc=Riccardo.Veraldi@cnaf.infn.it \
--cc=kvm@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox