Re: [Xen-API] [Xen-users] LiveStorageMigration Error "The attempt to mark the VDI as hidden failed "

[Thanos Makatos <thanos.makatos@xxxxxxxxxx>]

(Adding back xen-api.)

> -----Original Message-----
> From: Thomas Plant | Limitis [mailto:Thomas.Plant@xxxxxxxxxxx]
> Sent: 26 July 2013 09:59
> To: Thanos Makatos
> Subject: AW: [Xen-users] LiveStorageMigration Error "The attempt to
> mark the VDI as hidden failed "
> 
> Thanks for the answer. Now I have more peace of mind â
> 
> Think this is what happened:
> 
> [32090] 2013-07-25 14:45:06.112002ÂÂÂÂÂ vdi_deactivate {'sr_uuid':
> '02020387-8bff-73ea-f9b0-a7c87e0618c2', 'subtask_of':
> 'DummyRef:|0b5a7cb9-3ce9-1927-740c-0c485338655e|VDI.deactivate', 'vdi_r
> ef': 'OpaqueRef:ca04b4bd-7a30-6d2d-4123-abea0481744d', 'vdi_on_boot':
> 'persist', 'args': [], 'vdi_location': 'caf50bb5-84e3-472f-ac61-
> 260f552e63aa', 'host_ref': 'OpaqueRef:cb8dbdb0-2284-037e-b 2a5-
> f0a15e506331', 'session_ref': 'OpaqueRef:53d97ff4-0d38-22dc-4be5-
> 9d464d500f40', 'device_config': {'target': '172.16.11.1',
> 'chappassword_secret': 'e1a723c1-dc27-5f17-dfb8-159a88a0268a', 'c
> hapuser': 'iqn.2013-04.it.zcom.xen-5:666767f1', 'multihomelist':
> '172.16.11.1:3260,172.16.10.1:3260', 'targetIQN': 'iqn.1992-
> 05.com.emc:ckm001234018772007-4', 'SRmaster': 'false', 'device': '/
> dev/disk/mpInuse/36006048c35b5f8d8e7052aa9e584440e', 'SCSIid':
> '36006048c35b5f8d8e7052aa9e584440e', 'port': '3260'}, 'command':
> 'vdi_deactivate', 'vdi_allow_caching': 'false', 'sr_ref': 'Opaqu
> eRef:9b6457c9-221a-18f8-90b2-e6619360a7f3', 'vdi_uuid': 'caf50bb5-84e3-
> 472f-ac61-260f552e63aa'}
> [32090] 2013-07-25 14:45:06.112319ÂÂÂÂÂ blktap2.deactivate [32090]
> 2013-07-25 14:45:06.112462ÂÂÂÂÂ lock: acquired /var/lock/sm/caf50bb5-
> 84e3-472f-ac61-260f552e63aa/vdi
> [32090] 2013-07-25 14:45:06.189559ÂÂÂÂÂ unlink of attach_info failed
> 
> and the sr_uuid is the one from which we migrated away.

I don't think this is the correct excerpt, could you search /var/log/SMlog* for 
the string "Failed to mark VDI hidden"?

> 
> Von: Thanos Makatos [mailto:thanos.makatos@xxxxxxxxxx]
> Gesendet: Freitag, 26. Juli 2013 10:32
> An: Thomas Plant | Limitis
> Cc: xapi-users@xxxxxxxxxxxxxxxxxxxx
> Betreff: RE: [Xen-users] LiveStorageMigration Error "The attempt to
> mark the VDI as hidden failed "
> 
> (Thatâs a XenServer-specific error, dropping xen-users and CCing xapi-
> users)
> 
> Weâve seen such an error before and it had to do with marking the
> source VDI as delete-able. The cause was a race condition with the
> GC/cleanup daemon.
> 
> If you say that the VM is running on the destination, you can check
> /var/log/SMlog and ensure that the VDI for which the error was raised
> is the VMâs VDI on the source host. If this is the case everything
> should be OK.
> 
> From: xen-users-bounces@xxxxxxxxxxxxx [mailto:xen-users-
> bounces@xxxxxxxxxxxxx] On Behalf Of Thomas Plant | Limitis
> Sent: 25 July 2013 14:34
> To: xen-users@xxxxxxxxxxxxx
> Subject: [Xen-users] LiveStorageMigration Error "The attempt to mark
> the VDI as hidden failed "
> 
> Hello.
> 
> We are moving some VMs on XCP 1.6 from an iSCSI Storage to another.
> One VM gave the following error:Â The attempt to mark the VDI as hidden
> failed
> 
> But, all data has been moved to the new storage, the VM is working and
> at first sight seems ok.
> But can I trust it? Anyboday had similar errors?
> 
> Thanks
> Thomas

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