[ovirt-users] Bad volume specification after hung migration

[Roberto Nunin]

We are running 4.0.1.1-1.el7.centos

After a frozen migration attempt, we have two VM that after shutdown, are
not anymore able to be started up again.

Message returned is :

Bad volume specification {'index': '0', u'domainID':
u'731d95a9-61a7-4c7a-813b-fb1c3dde47ea', 'reqsize': '0', u'format': u'cow',
u'optional': u'false', u'address': {u'function': u'0x0', u'bus': u'0x00',
u'domain': u'0x0000', u'type': u'pci', u'slot': u'0x05'}, u'volumeID':
u'cffc70ff-ed72-46ef-a369-4be95de72260', 'apparentsize': '3221225472',
u'imageID': u'3fe5a849-bcc2-42d3-93c5aca4c504515b', u'specParams': {},
u'readonly': u'false', u'iface': u'virtio', u'deviceId':
u'3fe5a849bcc2-42d3-93c5-aca4c504515b', 'truesize': '3221225472',
u'poolID': u'00000001-0001-0001-0001-0000000001ec', u'device': u'disk',
u'shared': u'false', u'propagateErrors': u'off',u'type':u'disk'}

Probably this is caused by a wrong pointer into the database that still
refer to the migration image-id.

If we search within all_disks view, we can find that parentid field
isn't 00000000-0000-0000-0000-000000000000
like all other running vm, but it has a value:

       vm_names       |               parentid
----------------------+--------------------------------------
 working01.company.xx | 00000000-0000-0000-0000-000000000000
 working02.company.xx | 00000000-0000-0000-0000-000000000000
 working03.company.xx | 00000000-0000-0000-0000-000000000000
 working04.company.xx | 00000000-0000-0000-0000-000000000000
 broken001.company.xx | 30533842-2c83-4d0e-95d2-48162dbe23bd <<<<<<<<<
 working05.company.xx | 00000000-0000-0000-0000-000000000000


How we can recover from this ?

Thanks in advance
Regards,

-- 
Robert
​o​
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