[one-users] Opennebula 4.0, Ceph cluster migrate vm problem

Wed Apr 17 10:31:42 PDT 2013

Done! [1]

Thanks Bill!

[1] http://opennebula.org/documentation:rel4.0:ceph_ds

On Wed, Apr 17, 2013 at 6:58 PM, Ruben S. Montero
<rsmontero at opennebula.org>wrote:

> This should go straightaway to the ceph datastore documentation. Thanks
> Bill!
>
> On Wed, Apr 17, 2013 at 6:35 PM, Campbell, Bill
> <bcampbell at axcess-financial.com> wrote:
> > From our experience that's because it cannot see the checkpoint file on
> the target hypervisor.
> >
> > For migration, the Ceph driver uses the transfer manager of the 'system'
> datastore, and from our experience we have to do either one of two things:
> >
> > 1.  The /var/lib/one/datastores/0 (system datastore) directory needs to
> be shared between opennebula and the hypervisor nodes
> > 2.  Change the system datastore to use the ssh transfer manager, then
> modify the pre and postmigrate scripts for the ssh transfer manager to copy
> over the deployment/checkpoint files from the deployed node
> >
> > We went with option 2 to prevent the reliance on a shared storage volume
> (NFS, iSCSI etc.) for holding the deployment and configuration files.
> >
> > ----- Original Message -----
> > From: "Ruben S. Montero" <rsmontero at opennebula.org>
> > To: users at lists.opennebula.org
> > Sent: Wednesday, April 17, 2013 11:48:54 AM
> > Subject: Re: [one-users] Opennebula 4.0, Ceph cluster migrate vm problem
> >
> > Hi
> >
> > Can you check that the checkpoint file is created and it has access
> > permissions for oneadmin?. Could it be an issue with the KVM
> > configuration (dynamic_ownership or user/group). From the logs it
> > seems that the checkpoint file is not created or cannot be read... You
> > can also try onevm stop/resume to test the checkpoint functionality.
> >
> > Cheers
> >
> > Ruben
> >
> > On Tue, Apr 16, 2013 at 4:50 PM, Stefan Ivanov <s.ivanov at maxtelecom.bg>
> wrote:
> >> Hello all.
> >>
> >> I have problem with migration of virtual machines. When i try to migrate
> >> from hos to host i get this error:
> >>     VMM][I]: Command execution fail: /var/tmp/one/vmm/kvm/restore
> >> /var/lib/one//datastores/0/4/checkpoint gamma 4 gamma
> >> Tue Apr 16 17:46:30 2013 [VMM][E]: restore: Command "virsh --connect
> >> qemu:///system restore /var/lib/one//datastores/0/4/checkpoint" failed:
> >> error: Failed to restore domain from
> /var/lib/one//datastores/0/4/checkpoint
> >>
> >> There is my datastore info:
> >>     DATASTORE 107 INFORMATION
> >> ID             : 107
> >> NAME           : ceph_data
> >> USER           : oneadmin
> >> GROUP          : oneadmin
> >> CLUSTER        : -
> >> TYPE           : IMAGE
> >> DS_MAD         : ceph
> >> TM_MAD         : ceph
> >> BASE PATH      : /var/lib/one/datastores/107
> >> DISK_TYPE      : RBD
> >>
> >> PERMISSIONS
> >> OWNER          : um-
> >> GROUP          : u--
> >> OTHER          : ---
> >>
> >> DATASTORE TEMPLATE
> >> DISK_TYPE="RBD"
> >> DS_MAD="ceph"
> >> HOST="alpha"
> >> POOL_NAME="data"
> >> TM_MAD="ceph"
> >> TYPE="IMAGE_DS"
> >>
> >>
> >> There is mu error log.
> >>     Tue Apr 16 17:46:25 2013 [LCM][I]: New VM state is SAVE_MIGRATE
> >> Tue Apr 16 17:46:27 2013 [VMM][I]: ExitCode: 0
> >> Tue Apr 16 17:46:27 2013 [VMM][I]: Successfully execute virtualization
> >> driver operation: save.
> >> Tue Apr 16 17:46:27 2013 [VMM][I]: ExitCode: 0
> >> Tue Apr 16 17:46:27 2013 [VMM][I]: Successfully execute network driver
> >> operation: clean.
> >> Tue Apr 16 17:46:29 2013 [LCM][I]: New VM state is PROLOG_MIGRATE
> >> Tue Apr 16 17:46:29 2013 [TM][I]: ExitCode: 0
> >> Tue Apr 16 17:46:29 2013 [TM][I]: ExitCode: 0
> >> Tue Apr 16 17:46:30 2013 [LCM][I]: New VM state is BOOT
> >> Tue Apr 16 17:46:30 2013 [VMM][I]: ExitCode: 0
> >> Tue Apr 16 17:46:30 2013 [VMM][I]: Successfully execute network driver
> >> operation: pre.
> >> Tue Apr 16 17:46:30 2013 [VMM][I]: Command execution fail:
> >> /var/tmp/one/vmm/kvm/restore /var/lib/one//datastores/0/4/checkpoint
> gamma 4
> >> gamma
> >> Tue Apr 16 17:46:30 2013 [VMM][E]: restore: Command "virsh --connect
> >> qemu:///system restore /var/lib/one//datastores/0/4/checkpoint" failed:
> >> error: Failed to restore domain from
> /var/lib/one//datastores/0/4/checkpoint
> >> Tue Apr 16 17:46:30 2013 [VMM][I]: error: Failed to create file
> >> '/var/lib/one//datastores/0/4/checkpoint': No such file or directory
> >> Tue Apr 16 17:46:30 2013 [VMM][E]: Could not restore from
> >> /var/lib/one//datastores/0/4/checkpoint
> >> Tue Apr 16 17:46:30 2013 [VMM][I]: ExitCode: 1
> >> Tue Apr 16 17:46:30 2013 [VMM][I]: Failed to execute virtualization
> driver
> >> operation: restore.
> >> Tue Apr 16 17:46:30 2013 [VMM][E]: Error restoring VM: Could not restore
> >> from /var/lib/one//datastores/0/4/checkpoint
> >> Tue Apr 16 17:46:32 2013 [DiM][I]: New VM state is FAILED
> >>
> >> Any ideas what is the problem?
> >> _______________________________________________
> >> Users mailing list
> >> Users at lists.opennebula.org
> >> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
> >
> >
> >
> > --
> > Ruben S. Montero, PhD
> > Project co-Lead and Chief Architect
> > OpenNebula - The Open Source Solution for Data Center Virtualization
> > www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
> > _______________________________________________
> > Users mailing list
> > Users at lists.opennebula.org
> > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
> > NOTICE: Protect the information in this message in accordance with the
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>
>
>
> --
> Ruben S. Montero, PhD
> Project co-Lead and Chief Architect
> OpenNebula - The Open Source Solution for Data Center Virtualization
> www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>

-- 
Jaime Melis
Project Engineer
OpenNebula - The Open Source Toolkit for Cloud Computing
www.OpenNebula.org | jmelis at opennebula.org
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