[ovirt-users] Sync Error on Master Domain after adding a second one

Wed Mar 4 15:28:14 UTC 2015

Hi Liron,

I've reproduced the issue with a fresh deployment of oVirt 3.5.2rc. I've provided you with new screencasts and relevant logs for both cases (see inline comments):

screencast for case 1: https://www.dropbox.com/s/fdrcwmpy03v5xri/Screencast%20from%2004-03-2015%2010%3A53%3A32.webm?dl=1
screencast for case 2: https://www.dropbox.com/s/w72bf86n9v2pvdw/Screencast%20from%2004-03-2015%2015%3A18%3A45.webm?dl=1
logs for case 1: https://www.dropbox.com/sh/bl24umw0w1anclb/AAC0Oq7c6oXWetw-tp-55c37a?dl=0
logs for case 2: https://www.dropbox.com/sh/rp3pdda68nox099/AABtZGKDfFCH3sD6FZPvxRmEa?dl=0

Please note that I'm using different networks for Management (192.168.48.0/24) and GlusterFS replica (192.168.50.0/24):

		management FQDN		GlusterFS FQDN
node 1:		s20.ovirt.prisma	s20gfs.ovirt.prisma
node 2:		s21.ovirt.prisma	s21gfs.ovirt.prisma

On dom, 2015-03-01 at 04:55 -0500, Liron Aravot wrote:
> Hi Stefano,
> thanks for the great input!
> 
> I went over the logs (is the screencast uses the same domains? i don't have the logs from that run) - the master domain deactivation (and the master role migration to the new domain) fails with the error to copy the master fs content to the new domain on tar copy (see on [1] the error).
> 
> 1. Is there a chance that there is any problem inconsistent storage access problem to any of the domains?
Storage domains rely on GlusterFS volumes created on purpose. VMs runs correctly.

> 2. Does the issue reproduces always or only in some of the runs?
The issue reproduces always but:
case 1) if DATA and DATA_NEW are both created pointing to s20gfs the issue reproduces and Master role changes (Screencast 1).
case 2) if DATA is pointing to s20 and DATA_NEW to s20gfs the issue reproduces and Muster roles flips but does not change (Screencast 2).

> 3. Have you tried to run a operation that creates a task? a creation of a disk for example.
Every operations like creating or moving a disk are working correctly.

> 
> thanks,
> Liron.
> 
> 
> 
> [1]:
> Thread-9875::DEBUG::2015-02-25 15:06:57,969::clusterlock::349::Storage.SANLock::(release) Cluster lock for domain 08298f60-4919-4f86-9233-827c1089779a success
> fully released
> Thread-9875::ERROR::2015-02-25 15:06:57,969::task::866::Storage.TaskManager.Task::(_setError) Task=`2a434209-3e96-4d1e-8d1b-8c7463889f6a`::Unexpected error
> Traceback (most recent call last):
>   File "/usr/share/vdsm/storage/task.py", line 873, in _run
>     return fn(*args, **kargs)
>   File "/usr/share/vdsm/logUtils.py", line 45, in wrapper
>     res = f(*args, **kwargs)
>   File "/usr/share/vdsm/storage/hsm.py", line 1246, in deactivateStorageDomain
>     pool.deactivateSD(sdUUID, msdUUID, masterVersion)
>   File "/usr/share/vdsm/storage/securable.py", line 77, in wrapper
>     return method(self, *args, **kwargs)
>   File "/usr/share/vdsm/storage/sp.py", line 1097, in deactivateSD
>     self.masterMigrate(sdUUID, newMsdUUID, masterVersion)
>   File "/usr/share/vdsm/storage/securable.py", line 77, in wrapper
>     return method(self, *args, **kwargs)
>   File "/usr/share/vdsm/storage/sp.py", line 816, in masterMigrate
>     exclude=('./lost+found',))
>   File "/usr/share/vdsm/storage/fileUtils.py", line 68, in tarCopy
>     raise TarCopyFailed(tsrc.returncode, tdst.returncode, out, err)
> TarCopyFailed: (1, 0, '', '')
> Thread-9875::DEBUG::2015-02-25 15:06:57,969::task::885::Storage.TaskManager.Task::(_run) Task=`2a434209-3e96-4d1e-8d1b-8c7463889f6a`::Task._run: 2a434209-3e96
> -4d1e-8d1b-8c7463889f6a ('62a034ca-63df-44f2-9a87-735ddd257a6b', '00000002-0002-0002-0002-00000000022f', '08298f60-4919-4f86-9233-827c1089779a', 34) {} failed
>  - stopping task
> 
> ----- Original Message -----
> > From: "Stefano Stagnaro" <stefanos at prisma-eng.com>
> > To: "Vered Volansky" <vered at redhat.com>
> > Cc: users at ovirt.org
> > Sent: Friday, February 27, 2015 4:54:31 PM
> > Subject: Re: [ovirt-users] Sync Error on Master Domain after adding a second one
> > 
> > I think I finally managed to replicate the problem:
> > 
> > 1. deploy a datacenter with a virt only cluster and a gluster only cluster
> > 2. create a first GlusterFS Storage Domain (e.g. DATA) and activate it
> > (should become Master)
> > 3. create a second GlusterFS Storage Domain (e.g. DATA_NEW) and activate it
> > 4. put DATA in maintenance
> > 
> > Both Storage Domains flows between the following states:
> > https://www.dropbox.com/s/x542q1epf40ar5p/Screencast%20from%2027-02-2015%2015%3A09%3A29.webm?dl=1
> > 
> > Webadmin Events shows: "Sync Error on Master Domain between Host v10 and
> > oVirt Engine. Domain: DATA is marked as Master in oVirt Engine database but
> > not on the Storage side. Please consult with Support on how to fix this
> > issue."
> > 
> > It seems DATA can be deactivated at the second attempt.
> > 
> > --
> > Stefano Stagnaro
> > 
> > Prisma Engineering S.r.l.
> > Via Petrocchi, 4
> > 20127 Milano – Italy
> > 
> > Tel. 02 26113507 int 339
> > e-mail: stefanos at prisma-eng.com
> > skype: stefano.stagnaro
> > 
> > On mer, 2015-02-25 at 15:41 +0100, Stefano Stagnaro wrote:
> > > This is what I've done basically:
> > > 
> > > 1. added a new data domain (DATA_R3);
> > > 2. activated the new data domain - both domains in "active" state;
> > > 3. moved Disks from DATA to DATA_R3;
> > > 4. tried to put the old data domain in maintenance (from webadmin or
> > > shell);
> > > 5. both domains became inactive;
> > > 6. DATA_R3 came back in "active";
> > > 7. DATA domain went in "being initialized";
> > > 8. Webadmin shows the error "Sync Error on Master Domain between...";
> > > 9. DATA domain completed the reconstruction and came back in "active".
> > > 
> > > Please find engine and vdsm logs here:
> > > https://www.dropbox.com/sh/uuwwo8sxcg4ffqp/AAAx6UrwI3jbsN4oraJuDx9Fa?dl=0
> > > 
> > 
> > 
> > 
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