[Users] Live migration of VM's occasionally fails
Dafna Ron
dron at redhat.com
Mon Feb 17 17:59:22 UTC 2014
mmm... that is very interesting...
both vm's are identical? are they server or desktops type? created as
thin copy or clone? what storage type are you using? did you happen to
have an open monitor on the vm that failed migration?
I wonder if it can be sanlock lock on the source template but I can only
see this bug happening if the vm's are linked to the template
can you look at the sanlock log and see if there are any warning or errors?
All logs are in debug so I don't think we can get anything more from it
but I am adding Meital and Omer to this mail to help debug this -
perhaps they can think of something that can cause that from the trace.
This case is really interesting... sorry, probably not what you want to
hear... thanks for helping with this :)
Dafna
On 02/17/2014 05:08 PM, Steve Dainard wrote:
> Failed live migration is wider spread than these two VM's, but they
> are a good example because they were both built from the same template
> and have no modifications after they were created. They were also
> migrated one after the other, with one successfully migrating and the
> other not.
>
> Are there any increased logging levels that might help determine what
> the issue is?
>
> Thanks,
>
> *Steve Dainard *
> IT Infrastructure Manager
> Miovision <http://miovision.com/> | /Rethink Traffic/
>
> *Blog <http://miovision.com/blog> | **LinkedIn
> <https://www.linkedin.com/company/miovision-technologies> | Twitter
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> <https://www.facebook.com/miovision>*
> ------------------------------------------------------------------------
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> ON, Canada | N2C 1L3
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>
> On Mon, Feb 17, 2014 at 11:47 AM, Dafna Ron <dron at redhat.com
> <mailto:dron at redhat.com>> wrote:
>
> did you install these vm's from a cd? run it as run-once with a
> special monitor?
> try to think if there is anything different in the configuration
> of these vm's from the other vm's that succeed to migrate?
>
>
> On 02/17/2014 04:36 PM, Steve Dainard wrote:
>
> Hi Dafna,
>
> No snapshots of either of those VM's have been taken, and
> there are no updates for any of those packages on EL 6.5.
>
> *Steve Dainard *
> IT Infrastructure Manager
> Miovision <http://miovision.com/> | /Rethink Traffic/
>
> *Blog <http://miovision.com/blog> | **LinkedIn
> <https://www.linkedin.com/company/miovision-technologies> |
> Twitter <https://twitter.com/miovision> | Facebook
> <https://www.facebook.com/miovision>*
> ------------------------------------------------------------------------
> Miovision Technologies Inc. | 148 Manitou Drive, Suite 101,
> Kitchener, ON, Canada | N2C 1L3
> This e-mail may contain information that is privileged or
> confidential. If you are not the intended recipient, please
> delete the e-mail and any attachments and notify us immediately.
>
>
> On Sun, Feb 16, 2014 at 7:05 AM, Dafna Ron <dron at redhat.com
> <mailto:dron at redhat.com> <mailto:dron at redhat.com
> <mailto:dron at redhat.com>>> wrote:
>
> does the vm that fails migration have a live snapshot?
> if so how many snapshots does the vm have.
> I think that there are newer packages of vdsm, libvirt and
> qemu -
> can you try to update
>
>
>
> On 02/16/2014 12:33 AM, Steve Dainard wrote:
>
> Versions are the same:
>
> [root at ovirt001 ~]# rpm -qa | egrep 'libvirt|vdsm|qemu'
> | sort
> gpxe-roms-qemu-0.9.7-6.10.el6.noarch
> libvirt-0.10.2-29.el6_5.3.x86_64
> libvirt-client-0.10.2-29.el6_5.3.x86_64
> libvirt-lock-sanlock-0.10.2-29.el6_5.3.x86_64
> libvirt-python-0.10.2-29.el6_5.3.x86_64
> qemu-img-rhev-0.12.1.2-2.355.el6.5.x86_64
> qemu-kvm-rhev-0.12.1.2-2.355.el6.5.x86_64
> qemu-kvm-rhev-tools-0.12.1.2-2.355.el6.5.x86_64
> vdsm-4.13.3-3.el6.x86_64
> vdsm-cli-4.13.3-3.el6.noarch
> vdsm-gluster-4.13.3-3.el6.noarch
> vdsm-python-4.13.3-3.el6.x86_64
> vdsm-xmlrpc-4.13.3-3.el6.noarch
>
> [root at ovirt002 ~]# rpm -qa | egrep 'libvirt|vdsm|qemu'
> | sort
> gpxe-roms-qemu-0.9.7-6.10.el6.noarch
> libvirt-0.10.2-29.el6_5.3.x86_64
> libvirt-client-0.10.2-29.el6_5.3.x86_64
> libvirt-lock-sanlock-0.10.2-29.el6_5.3.x86_64
> libvirt-python-0.10.2-29.el6_5.3.x86_64
> qemu-img-rhev-0.12.1.2-2.355.el6.5.x86_64
> qemu-kvm-rhev-0.12.1.2-2.355.el6.5.x86_64
> qemu-kvm-rhev-tools-0.12.1.2-2.355.el6.5.x86_64
> vdsm-4.13.3-3.el6.x86_64
> vdsm-cli-4.13.3-3.el6.noarch
> vdsm-gluster-4.13.3-3.el6.noarch
> vdsm-python-4.13.3-3.el6.x86_64
> vdsm-xmlrpc-4.13.3-3.el6.noarch
>
> Logs attached, thanks.
>
> *Steve Dainard *
> IT Infrastructure Manager
> Miovision <http://miovision.com/> | /Rethink Traffic/
>
> *Blog <http://miovision.com/blog> | **LinkedIn
>
> <https://www.linkedin.com/company/miovision-technologies> |
> Twitter <https://twitter.com/miovision> | Facebook
> <https://www.facebook.com/miovision>*
>
> ------------------------------------------------------------------------
> Miovision Technologies Inc. | 148 Manitou Drive, Suite
> 101,
> Kitchener, ON, Canada | N2C 1L3
> This e-mail may contain information that is privileged or
> confidential. If you are not the intended recipient,
> please
> delete the e-mail and any attachments and notify us
> immediately.
>
>
> On Sat, Feb 15, 2014 at 6:24 AM, Dafna Ron
> <dron at redhat.com <mailto:dron at redhat.com>
> <mailto:dron at redhat.com <mailto:dron at redhat.com>>
> <mailto:dron at redhat.com <mailto:dron at redhat.com>
>
> <mailto:dron at redhat.com <mailto:dron at redhat.com>>>> wrote:
>
> the migration fails in libvirt:
>
>
> Thread-153709::ERROR::2014-02-14
> 11:17:40,420::vm::337::vm.Vm::(run)
>
> vmId=`08434c90-ffa3-4b63-aa8e-5613f7b0e0cd`::Failed to migrate
> Traceback (most recent call last):
> File "/usr/share/vdsm/vm.py", line 323, in run
> self._startUnderlyingMigration()
> File "/usr/share/vdsm/vm.py", line 403, in
> _startUnderlyingMigration
> None, maxBandwidth)
> File "/usr/share/vdsm/vm.py", line 841, in f
> ret = attr(*args, **kwargs)
> File
>
> "/usr/lib64/python2.6/site-packages/vdsm/libvirtconnection.py",
> line 76, in wrapper
> ret = f(*args, **kwargs)
> File
> "/usr/lib64/python2.6/site-packages/libvirt.py",
> line 1178,
> in migrateToURI2
> if ret == -1: raise libvirtError
> ('virDomainMigrateToURI2()
> failed', dom=self)
> libvirtError: Unable to read from monitor: Connection
> reset by peer
> Thread-54041::DEBUG::2014-02-14
>
> 11:17:41,752::task::579::TaskManager.Task::(_updateState)
>
> Task=`094c412a-43dc-4c29-a601-d759486469a8`::moving from state
> init -> state preparing
> Thread-54041::INFO::2014-02-14
> 11:17:41,753::logUtils::44::dispatcher::(wrapper)
> Run and
> protect:
>
> getVolumeSize(sdUUID='a52938f7-2cf4-4771-acb2-0c78d14999e5',
> spUUID='fcb89071-6cdb-4972-94d1-c9324cebf814',
> imgUUID='97c9108f-a506-415f-ad2
> c-370d707cb130',
> volUUID='61f82f7f-18e4-4ea8-9db3-71ddd9d4e836',
> options=None)
>
> Do you have the same libvirt/vdsm/qemu on both
> your hosts?
> Please attach the libvirt and vm logs from both hosts.
>
> Thanks,
> Dafna
>
>
>
> On 02/14/2014 04:50 PM, Steve Dainard wrote:
>
> Quick overview:
> Ovirt 3.3.2 running on CentOS 6.5
> Two hosts: ovirt001, ovirt002
> Migrating two VM's: puppet-agent1,
> puppet-agent2 from
> ovirt002
> to ovirt001.
>
> The first VM puppet-agent1 migrates
> successfully. The
> second
> VM puppet-agent2 fails with "Migration failed
> due to
> Error:
> Fatal error during migration (VM:
> puppet-agent2, Source:
> ovirt002, Destination: ovirt001)."
>
> I've attached the logs if anyone can help me track
> down the issue.
>
> Thanks,
>
> *Steve Dainard *
> IT Infrastructure Manager
> Miovision <http://miovision.com/> | /Rethink
> Traffic/
>
> *Blog <http://miovision.com/blog> | **LinkedIn
>
> <https://www.linkedin.com/company/miovision-technologies> |
> Twitter <https://twitter.com/miovision> |
> Facebook
> <https://www.facebook.com/miovision>*
>
> ------------------------------------------------------------------------
>
>
> Miovision Technologies Inc. | 148 Manitou
> Drive, Suite
> 101,
> Kitchener, ON, Canada | N2C 1L3
> This e-mail may contain information that is
> privileged or
> confidential. If you are not the intended
> recipient,
> please
> delete the e-mail and any attachments and
> notify us
> immediately.
>
>
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>
>
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>
>
>
> -- Dafna Ron
>
>
>
>
> -- Dafna Ron
>
>
>
>
> --
> Dafna Ron
>
>
--
Dafna Ron
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