On Sat, Jan 18, 2014 at 6:39 PM, Dafna Ron <dron@redhat.com> wrote:

sounds like this is the issue to me... Edgars can you try to confirm that? :)
Michal, was there a bug opened for this? I think that perhaps we should also add a clear error message - it would help debug this more easily.

On 01/18/2014 05:34 PM, Michal Skrivanek wrote:

On 18 Jan 2014, at 18:06, Itamar Heim <iheim@redhat.com> wrote:

On 01/18/2014 03:44 PM, Edgars M. wrote:
Hi

Thanks for your help. I will provide all log files a little bit later,
but so far I have noticed some pattern when migration fails. Those
particular VMs, which fails to migrate, were installed from ISO image,
usual installation. So, I believe you can reproduce the issue by this:

1. Upload ISO image to ISO domain
2. Install new OS by booting from ISO image and check Attach CD in Boot
Options
3. Delete ISO image from ISO domain
4. Try to migrate VM to another host.

I have not tried this yet, but I have noticed that only those VMs fails
which had been install from ISO image which is not in ISO domain
anymore. I have also VMs created from templates and those VMs I can
migrate just fine.

did you stop the VMs post install? did you try to start them without the iso attached?
otherwise, you can't start them, as there is a missing iso for the target qemu process

Indeed. That is a known libvirt/qemu issue that even though the CD is defined as optional and VM can be started without it on original host, it fails upon migration when destination is being created.

Thanks,
michal

I will provide more log files later.

BR
Edgars

On Sat, Jan 18, 2014 at 1:05 PM, Dafna Ron <dron@redhat.com
<mailto:dron@redhat.com>> wrote:

I looked at the logs log and only vdsm from node2 (which appears to
be the src node) seems to have full info.

Please attach the following complete logs:
vdsm log from dst node
engine log
libvirt logs from both nodes.

Also, can you please answer the following?
libvirt and vdsm you are using?
what is selinux status on both hosts (enforcing/permissive)?
do you have snapshots on the vm or does it happen on a newly created
disk?
when you create the disk, is it from a template or is it a new image?

Thanks,

Dafna

On 01/17/2014 10:21 PM, Itamar Heim wrote:

On 01/18/2014 12:07 AM, Meital Bourvine wrote:

I opened a bug about missing info in UI:
https://bugzilla.redhat.com/__show_bug.cgi?id=1054994
<https://bugzilla.redhat.com/show_bug.cgi?id=1054994>

It actually failed with this error:
Thread-1417::DEBUG::2014-01-17
17:01:28,344::vm::768::vm.Vm::__(run)
vmId=`b8787906-187a-4234-a0c9-__58fc4ddf2a57`::starting
migration monitor thread
Thread-1415::DEBUG::2014-01-17
17:01:28,409::__libvirtconnection::108::__libvirtconnection::(wrapper)
Unknown libvirterror: ecode: 38 edom: 42 level: 2 message:
Failed to inquire lock: No such process
Thread-1415::DEBUG::2014-01-17
17:01:28,409::vm::745::vm.Vm::__(cancel)
vmId=`b8787906-187a-4234-a0c9-__58fc4ddf2a57`::canceling
migration downtime thread
Thread-1415::DEBUG::2014-01-17
17:01:28,409::vm::815::vm.Vm::__(stop)
vmId=`b8787906-187a-4234-a0c9-__58fc4ddf2a57`::stopping
migration monitor thread
Thread-1416::DEBUG::2014-01-17
17:01:28,409::vm::742::vm.Vm::__(run)
vmId=`b8787906-187a-4234-a0c9-__58fc4ddf2a57`::migration
downtime thread exiting
Thread-1415::ERROR::2014-01-17
17:01:28,410::vm::238::vm.Vm::__(_recover)
vmId=`b8787906-187a-4234-a0c9-__58fc4ddf2a57`::Failed to
inquire lock: No such process
Thread-1415::ERROR::2014-01-17
17:01:28,619::vm::337::vm.Vm::__(run)
vmId=`b8787906-187a-4234-a0c9-__58fc4ddf2a57`::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 400, in
_startUnderlyingMigration
None, maxBandwidth)
File "/usr/share/vdsm/vm.py", line 838, 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: Failed to inquire lock: No such process
Thread-26::ERROR::2014-01-17
17:01:28,917::sampling::355::__vm.Vm::(collect)
vmId=`b8787906-187a-4234-a0c9-__58fc4ddf2a57`::Stats
function failed: <AdvancedStatsFunction _highWrite at 0x26efb58>

The problem is that it doesn't say which process...

this looks like noise post the migration failing, with probably
a more relevant error in libvirt log

----- Original Message -----

From: "Itamar Heim" <iheim@redhat.com
<mailto:iheim@redhat.com>>
To: "Edgars M." <edgars.mazurs@gmail.com
<mailto:edgars.mazurs@gmail.com>>, "Meital Bourvine"
<mbourvin@redhat.com <mailto:mbourvin@redhat.com>>
Cc: users@ovirt.org <mailto:users@ovirt.org>, "Michal
Skrivanek" <mskrivan@redhat.com
<mailto:mskrivan@redhat.com>>
Sent: Friday, January 17, 2014 9:47:11 PM
Subject: Re: [Users] VM Migration failed

On 01/17/2014 06:25 PM, Edgars M. wrote:

Hi Meital

I tried to migrate another VM and it also failed.

This is what I get in UI:

Migration started (VM: nophpapp01, Source:
novmnode1, Destination:
novmnode2, User: edgarsm).
Migration failed due to Error: Fatal error during
migration. Trying to
migrate to another Host (VM: nophpapp01, Source:
novmnode1, Destination:
novmnode2).
Migration failed due to Error: Fatal error during
migration (VM:
nophpapp01, Source: novmnode1, Destination: novmnode2).

There is nothing in /var/log/messages, neither on
engine server nor nodes.

See attachments for engine and vdsm logs. (I am
migrating from vmnode1
to vmnode2)

whatever the issue is here, can you please open a bug on
trying to
return more info to user on the migration error itself
(for easier
troubleshooting).

thanks,
Itamar

Thanks for the help
Edgars

On Fri, Jan 17, 2014 at 4:46 PM, Meital Bourvine
<mbourvin@redhat.com <mailto:mbourvin@redhat.com>
<mailto:mbourvin@redhat.com
<mailto:mbourvin@redhat.com>>> wrote:

Which error are you getting in the UI?
Can you please attach the full engine and vdsm
logs?
Also, please check if there is a relevant
error in /var/log/messages

------------------------------__------------------------------__------------

*From: *"Edgars M."
<edgars.mazurs@gmail.com
<mailto:edgars.mazurs@gmail.com>
<mailto:edgars.mazurs@gmail.__com
<mailto:edgars.mazurs@gmail.com>>>
*To: *users@ovirt.org
<mailto:users@ovirt.org> <mailto:users@ovirt.org
<mailto:users@ovirt.org>>
*Sent: *Friday, January 17, 2014 3:42:37 PM
*Subject: *[Users] VM Migration failed

Hi

I am experiencing issues with manual VM
migration. VM fails to
migrate to other node in the same Cluster.
Here are some
relevant engine.log entries:

ERROR
[org.ovirt.engine.core.__vdsbroker.__VdsUpdateRunTimeInfo]
(DefaultQuartzScheduler___Worker-73) Rerun vm
a31cfd62-26fc-4396-8a83-__1aed68c7fd39.
Called from vds novmnode1

ERROR
[org.ovirt.engine.core.__vdsbroker.vdsbroker.__MigrateStatusVDSCommand]
(pool-6-thread-49) Failed in
MigrateStatusVDS method

ERROR
[org.ovirt.engine.core.__vdsbroker.vdsbroker.__MigrateStatusVDSCommand]
(pool-6-thread-49) Error code migrateErr
and error message
VDSGenericException: VDSErrorException:
Failed to
MigrateStatusVDS, error = Fatal error
during migration

ERROR
[org.ovirt.engine.core.__vdsbroker.vdsbroker.__MigrateStatusVDSCommand]
(pool-6-thread-49) Command
MigrateStatusVDS execution failed.
Exception: VDSErrorException:
VDSGenericException:
VDSErrorException: Failed to
MigrateStatusVDS, error = Fatal
error during migration

Both Engine and Node are running CentOS
6.5 x64. oVirt Engine
Version: 3.3.2-1.el6. VDSM version
4.13.2-1. I restarted engine
and vdsm, that did not help.

Also in vdsm log file I see the following
errors related to the
same VM ID:

Thread-27::ERROR::2014-01-17

16:37:06,271::sampling::355::__vm.Vm::(collect)

vmId=`a31cfd62-26fc-4396-8a83-__1aed68c7fd39`::Stats function
failed: <AdvancedStatsFunction _highWrite
at 0x26efb58>

Any hints?

BR
Edgars

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--
Dafna Ron

--
Dafna Ron