[one-users] VM deleted when fails to get domain

[Ruben S. Montero]

Hi Fermín,

Yes this is a known issue, see the issues:

http://dev.opennebula.org/issues/75
http://dev.opennebula.org/issues/91
http://dev.opennebula.org/issues/96

After some discussion the solution implemented is:
  1.- Do not remove VMs that are not reported by the underlying hypervisor
  2.- Set the VM in an special state (called UNKNOWN)
  3.- Let the sysadmin either recover the VM manually (it will appear
in the next polling)
or issue a restart request to start the VM again (note that  the VM is
alredy defined and the images are in place)
  4.- The user may also decide MANUALLY to delete the VM

This has been implemented in one of the development branches, and will
be included in the next release (by the end of the month we will
release the first beta.)

Please let me known if the previous solution makes sense in your
environment, as we could improve it before the code freeze.

Cheers

Ruben


2009/6/15 Fermín Manzanedo Guzmán <fmanzanedo at jetmultimedia.es>:
> Hi all.
>
> We've our cloud up and running, but sometimes our VM images dissapear
> without an aparent reason. It seems like if ONE doesn't connect to the
> domain and then executes the delete command. This is the log for two VMs
> deleted today:
>
> Mon Jun 15 12:35:57 2009 [VMM][I]: Monitoring VM 134.
> Mon Jun 15 12:36:01 2009 [VMM][D]: Message received: LOG - 134 Connecting to
> uri: qemu:///system
> Mon Jun 15 12:36:01 2009 [VMM][D]: Message received: LOG - 134 error: failed
> to get domain 'one-134'
> Mon Jun 15 12:36:01 2009 [VMM][D]: Message received: LOG - 134 error: Domain
> not found
> Mon Jun 15 12:36:01 2009 [VMM][D]: Message received: LOG - 134 ExitCode: 1
> Mon Jun 15 12:36:01 2009 [VMM][D]: Message received: POLL SUCCESS 134
> STATE=d
> Mon Jun 15 12:36:02 2009 [TM][D]: Message received: LOG - 134 tm_delete.sh:
> Deleting /VM//134/images
> Mon Jun 15 12:36:02 2009 [TM][D]: Message received: LOG - 134 tm_delete.sh:
> Executed "rm -rf /VM//134/images".
> Mon Jun 15 12:36:02 2009 [TM][D]: Message received: TRANSFER SUCCESS 134 -
> [...]
> Mon Jun 15 13:41:06 2009 [VMM][I]: Monitoring VM 132.
> Mon Jun 15 13:41:12 2009 [VMM][D]: Message received: LOG - 132 Connecting to
> uri: qemu:///system
> Mon Jun 15 13:41:12 2009 [VMM][D]: Message received: LOG - 132 ExitCode: 0
> Mon Jun 15 13:41:12 2009 [VMM][D]: Message received: POLL SUCCESS 132
> USEDMEMORY=524288 STATE=a
> Mon Jun 15 13:41:39 2009 [VMM][I]: Monitoring VM 132.
> Mon Jun 15 13:41:41 2009 [VMM][D]: Message received: LOG - 132 Connecting to
> uri: qemu:///system
> Mon Jun 15 13:41:41 2009 [VMM][D]: Message received: LOG - 132 error: failed
> to get domain 'one-132'
> Mon Jun 15 13:41:41 2009 [VMM][D]: Message received: LOG - 132 error: Domain
> not found
> Mon Jun 15 13:41:41 2009 [VMM][D]: Message received: LOG - 132 ExitCode: 1
> Mon Jun 15 13:41:41 2009 [VMM][D]: Message received: POLL SUCCESS 132
> STATE=d
> Mon Jun 15 13:41:42 2009 [TM][D]: Message received: LOG - 132 tm_delete.sh:
> Deleting /VM//132/images
> Mon Jun 15 13:41:42 2009 [TM][D]: Message received: LOG - 132 tm_delete.sh:
> Executed "rm -rf /VM//132/images".
> Mon Jun 15 13:41:42 2009 [TM][D]: Message received: TRANSFER SUCCESS 132 -
>
> Is there any way to override the tm_delete execution when get the "Domain
> not found" error? Perhaps move the image or save it to another path?
>
> Thanks in advance.
>
> --
>
> Fermin Manzanedo
>
> Administrador de Sistemas Senior
>
> Madrid
> Parque Empresarial Cristalia,
> Vía de los Poblados nº3 Edificio 5, Planta 4ª
> 28033 Madrid
>
> fmanzanedo at jetmultimedia.es
> Tel: 902 01 02 01
> Fax: 902 01 00 00
>
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>



-- 
+---------------------------------------------------------------+
 Dr. Ruben Santiago Montero
 Associate Professor
 Distributed System Architecture Group (http://dsa-research.org)

 URL:    http://dsa-research.org/doku.php?id=people:ruben
 Weblog: http://blog.dsa-research.org/?author=7

 GridWay, http://www.gridway.org
 OpenNebula, http://www.opennebula.org
+---------------------------------------------------------------+