----- Original Message -----
| From: "Assaf Muller" <amul...@redhat.com>
| To: "Dan Kenigsberg" <dan...@redhat.com>
| Cc: "Peter V. Saveliev" <p...@redhat.com>, vdsm-devel@lists.fedorahosted.org, 
"Giuseppe Vallarelli"
| <gvall...@redhat.com>, "michal skrivanek" <michal.skriva...@redhat.com>
| Sent: Thursday, May 30, 2013 9:00:49 AM
| Subject: Re: [vdsm] Migration regression on master
| 
| 
| 
|     * We still need to see the vmCreate command used to learn more about the
|     issue
|     * We can always implement a hack that checks if the alias attribute
|     exists. However, there is probably a deeper issue at hand and this is a
|     good opportunity to find and solve it
|     * Dan has a theory that the issue is with migrating a VM from a 3.0 VDSM
|     version host to a 3.2 host. Perhaps the balloon device isn't created
|     properly at the source host

I've been able to reproduce the failure here there are more details:

On the source host

* vmCreate http://pastebin.com/yEZ3zkyN
* vm xml http://pastebin.com/YSy4TYca

On the dest host

* vmMigrationCreate http://pastebin.com/rwdPC8Ef
* _srcDomXml nicely formatted http://pastebin.com/pjE8sMMW

Giuseppe


| 
| From: "Dan Kenigsberg" <dan...@redhat.com>
| To: "Peter V. Saveliev" <p...@redhat.com>
| Cc: vdsm-devel@lists.fedorahosted.org
| Sent: Wednesday, May 29, 2013 4:41:24 PM
| Subject: Re: [vdsm] Migration regression on master
| 
| On Wed, May 29, 2013 at 02:13:02PM +0200, Peter V. Saveliev wrote:
| > On 05/29/2013 07:17 AM, Dan Kenigsberg wrote:
| > >On Tue, May 28, 2013 at 11:54:45AM -0400, Giuseppe Vallarelli wrote:
| > >> | ----- Original Message -----
| 
| > >>| | From: "Assaf Muller" <amul...@redhat.com>
| > >>| | To: "Michal Skrivanek" <michal.skriva...@redhat.com>
| > >>| | Cc: "vdsm-devel@lists.fedorahosted.org Development"
| > >>| | <vdsm-devel@lists.fedorahosted.org>
| > >>| | Sent: Thursday, May 23, 2013 2:12:47 PM
| > >>| | Subject: Re: [vdsm] Migration regression on master
| > >>| | 
| > >>| | As you can see in a previous patch set I checked if the alias
| > >>| | attribute
| > >>| | exists instead of assuming it exists.
| > >>| | I then changed my mind with Dan's blessing, and decided to assume it
| > >>| | does
| > >>| | exist, exactly for cases like this.
| > >>| | Even if we check if the alias exists, what do we do if we find out it
| > >>| | doesn't? We're at a problem and need to understand why the alias
| > >>| | doesn't
| > >>| | exist because it should - For all devices.
| > >>| | 
| > >>| | We definitely need to deal with this issue - Can you provide the
| > >>| | domxml of
| > >>| | the VM during creation, and during migration?
| > >> 
| > >>Hi Assaf, Peter today has reproduced the same error and provided me
| > >>the output log, you can find it here:
| > >>http://etherpad.ovirt.org/p/migration-errors
| > > 
| > >Would you add the original vmCreate line, and domxml, that was used to
| > >create the VM at the source host?
| > 
| > http://pastebin.test.redhat.com/144447
| > http://pastebin.test.redhat.com/144446
| 
| That's an internal pastebin instance. Could you simply inline the
| answer? Hyperlinks makes a casual reader of the mailing list not
| understand what's going on.
| 
| Note that we need vmCreate command, the response is less
| interesting, thow seeing the whole vdsm thread would not harm.
| 
| Dan.
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| 
| 
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