[ovirt-users] VM HostedEngie is down. Exist message: internal error Failed to acquire lock error -243

Tue Jun 10 01:47:13 EDT 2014

On 06/10/2014 07:19 AM, Andrew Lau wrote:
> I'm really having a hard time finding out why it's happening..
>
> If I set the cluster to global for a minute or two, the scores will
> reset back to 2400. Set maintenance mode to none, and all will be fine
> until a migration occurs. It seems it tries to migrate, fails and sets
> the score to 0 permanently rather than the 10? minutes mentioned in
> one of the ovirt slides.
>
> When I have two hosts, it's score 0 only when a migration occurs.
> (Just on the host which doesn't have engine up). The score 0 only
> happens when it's tried to migrate when I set the host to local
> maintenance. Migrating the VM from the UI has worked quite a few
> times, but it's recently started to fail.
>
> When I have three hosts, after 5~ mintues of them all up the score
> will hit 0 on the hosts not running the VMs. It doesn't even have to
> attempt to migrate before the score goes to 0. Stopping the ha agent
> on one host, and "resetting" it with the global maintenance method
> brings it back to the 2 host scenario above.
>
> I may move on and just go back to a standalone engine as this is not
> getting very much luck..
Well I've done this already, I can't really afford to have so much 
unplanned downtime on my critical vm's, especially since it would take 
me several hours (even a whole day) to install a dedicated engine, then 
setup the nodes if need be, and then import vm's from export domain. I 
would love to help more to resolve this one, but I was pressed with 
time, I already had ovirt 3.3 running (for a year and a half rock solid 
stable, started from 3.1 i think), and I couldn't spare more then a day 
in trying to get around this bug (had to have a setup runing by the end 
of the weekend). I wasn't using gluster at all, so at least we know now 
that gluster is not a must in the mix. Besides Artyom already described 
it nicely in the bug report, havent had anything to add.

You were lucky Andrew, when I've tried the global maintenance method and 
restarted the VM, I got a corrupted filesystem on the VM's engine and it 
wouldn't even start on that one node that had a good score. It was "bad 
health" or uknown state on all of the nodes, and I've managed to repair 
the fs on the vm via VNC, then just barely bring the services online but 
the postgres db was too much damaged, so engine missbehaved.

At the time, I've explained it to myself :) that the locking mechanism 
didn't prevent one node to try to start (or write to) the vm while it 
was already running on another node, because filesystem was so damaged 
that I couldn't belive it, for 15 years I've never seen an extX fs so 
badly damaged, and the fact that this happens during migration just 
amped this thought up.
>
> On Tue, Jun 10, 2014 at 3:11 PM, combuster <combuster at archlinux.us> wrote:
>> Nah, I've explicitly allowed hosted-engine vm to be able to access the NAS
>> device as the NFS share itself, before the deploy procedure even started.
>> But I'm puzzled at how you can reproduce the bug, all was well on my setup
>> before I've stated manual migration of the engine's vm. Even auto migration
>> worked before that (tested it). Does it just happen without any procedure on
>> the engine itself? Is the score 0 for just one node, or two of three of
>> them?
>>
>> On 06/10/2014 01:02 AM, Andrew Lau wrote:
>>> nvm, just as I hit send the error has returned.
>>> Ignore this..
>>>
>>> On Tue, Jun 10, 2014 at 9:01 AM, Andrew Lau <andrew at andrewklau.com> wrote:
>>>> So after adding the L3 capabilities to my storage network, I'm no
>>>> longer seeing this issue anymore. So the engine needs to be able to
>>>> access the storage domain it sits on? But that doesn't show up in the
>>>> UI?
>>>>
>>>> Ivan, was this also the case with your setup? Engine couldn't access
>>>> storage domain?
>>>>
>>>> On Mon, Jun 9, 2014 at 9:56 PM, Andrew Lau <andrew at andrewklau.com> wrote:
>>>>> Interesting, my storage network is a L2 only and doesn't run on the
>>>>> ovirtmgmt (which is the only thing HostedEngine sees) but I've only
>>>>> seen this issue when running ctdb in front of my NFS server. I
>>>>> previously was using localhost as all my hosts had the nfs server on
>>>>> it (gluster).
>>>>>
>>>>> On Mon, Jun 9, 2014 at 9:15 PM, Artyom Lukianov <alukiano at redhat.com>
>>>>> wrote:
>>>>>> I just blocked connection to storage for testing, but on result I had
>>>>>> this error: "Failed to acquire lock error -243", so I added it in reproduce
>>>>>> steps.
>>>>>> If you know another steps to reproduce this error, without blocking
>>>>>> connection to storage it also can be wonderful if you can provide them.
>>>>>> Thanks
>>>>>>
>>>>>> ----- Original Message -----
>>>>>> From: "Andrew Lau" <andrew at andrewklau.com>
>>>>>> To: "combuster" <combuster at archlinux.us>
>>>>>> Cc: "users" <users at ovirt.org>
>>>>>> Sent: Monday, June 9, 2014 3:47:00 AM
>>>>>> Subject: Re: [ovirt-users] VM HostedEngie is down. Exist message:
>>>>>> internal error Failed to acquire lock error -243
>>>>>>
>>>>>> I just ran a few extra tests, I had a 2 host, hosted-engine running
>>>>>> for a day. They both had a score of 2400. Migrated the VM through the
>>>>>> UI multiple times, all worked fine. I then added the third host, and
>>>>>> that's when it all fell to pieces.
>>>>>> Other two hosts have a score of 0 now.
>>>>>>
>>>>>> I'm also curious, in the BZ there's a note about:
>>>>>>
>>>>>> where engine-vm block connection to storage domain(via iptables -I
>>>>>> INPUT -s sd_ip -j DROP)
>>>>>>
>>>>>> What's the purpose for that?
>>>>>>
>>>>>> On Sat, Jun 7, 2014 at 4:16 PM, Andrew Lau <andrew at andrewklau.com>
>>>>>> wrote:
>>>>>>> Ignore that, the issue came back after 10 minutes.
>>>>>>>
>>>>>>> I've even tried a gluster mount + nfs server on top of that, and the
>>>>>>> same issue has come back.
>>>>>>>
>>>>>>> On Fri, Jun 6, 2014 at 6:26 PM, Andrew Lau <andrew at andrewklau.com>
>>>>>>> wrote:
>>>>>>>> Interesting, I put it all into global maintenance. Shut it all down
>>>>>>>> for 10~ minutes, and it's regained it's sanlock control and doesn't
>>>>>>>> seem to have that issue coming up in the log.
>>>>>>>>
>>>>>>>> On Fri, Jun 6, 2014 at 4:21 PM, combuster <combuster at archlinux.us>
>>>>>>>> wrote:
>>>>>>>>> It was pure NFS on a NAS device. They all had different ids (had no
>>>>>>>>> redeployements of nodes before problem occured).
>>>>>>>>>
>>>>>>>>> Thanks Jirka.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 06/06/2014 08:19 AM, Jiri Moskovcak wrote:
>>>>>>>>>> I've seen that problem in other threads, the common denominator was
>>>>>>>>>> "nfs
>>>>>>>>>> on top of gluster". So if you have this setup, then it's a known
>>>>>>>>>> problem. Or
>>>>>>>>>> you should double check if you hosts have different ids otherwise
>>>>>>>>>> they would
>>>>>>>>>> be trying to acquire the same lock.
>>>>>>>>>>
>>>>>>>>>> --Jirka
>>>>>>>>>>
>>>>>>>>>> On 06/06/2014 08:03 AM, Andrew Lau wrote:
>>>>>>>>>>> Hi Ivan,
>>>>>>>>>>>
>>>>>>>>>>> Thanks for the in depth reply.
>>>>>>>>>>>
>>>>>>>>>>> I've only seen this happen twice, and only after I added a third
>>>>>>>>>>> host
>>>>>>>>>>> to the HA cluster. I wonder if that's the root problem.
>>>>>>>>>>>
>>>>>>>>>>> Have you seen this happen on all your installs or only just after
>>>>>>>>>>> your
>>>>>>>>>>> manual migration? It's a little frustrating this is happening as I
>>>>>>>>>>> was
>>>>>>>>>>> hoping to get this into a production environment. It was all
>>>>>>>>>>> working
>>>>>>>>>>> except that log message :(
>>>>>>>>>>>
>>>>>>>>>>> Thanks,
>>>>>>>>>>> Andrew
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Fri, Jun 6, 2014 at 3:20 PM, combuster <combuster at archlinux.us>
>>>>>>>>>>> wrote:
>>>>>>>>>>>> Hi Andrew,
>>>>>>>>>>>>
>>>>>>>>>>>> this is something that I saw in my logs too, first on one node
>>>>>>>>>>>> and then
>>>>>>>>>>>> on
>>>>>>>>>>>> the other three. When that happend on all four of them, engine
>>>>>>>>>>>> was
>>>>>>>>>>>> corrupted
>>>>>>>>>>>> beyond repair.
>>>>>>>>>>>>
>>>>>>>>>>>> First of all, I think that message is saying that sanlock can't
>>>>>>>>>>>> get a
>>>>>>>>>>>> lock
>>>>>>>>>>>> on the shared storage that you defined for the hostedengine
>>>>>>>>>>>> during
>>>>>>>>>>>> installation. I got this error when I've tried to manually
>>>>>>>>>>>> migrate the
>>>>>>>>>>>> hosted engine. There is an unresolved bug there and I think it's
>>>>>>>>>>>> related
>>>>>>>>>>>> to
>>>>>>>>>>>> this one:
>>>>>>>>>>>>
>>>>>>>>>>>> [Bug 1093366 - Migration of hosted-engine vm put target host
>>>>>>>>>>>> score to
>>>>>>>>>>>> zero]
>>>>>>>>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=1093366
>>>>>>>>>>>>
>>>>>>>>>>>> This is a blocker bug (or should be) for the selfhostedengine
>>>>>>>>>>>> and, from
>>>>>>>>>>>> my
>>>>>>>>>>>> own experience with it, shouldn't be used in the production
>>>>>>>>>>>> enviroment
>>>>>>>>>>>> (not
>>>>>>>>>>>> untill it's fixed).
>>>>>>>>>>>>
>>>>>>>>>>>> Nothing that I've done couldn't fix the fact that the score for
>>>>>>>>>>>> the
>>>>>>>>>>>> target
>>>>>>>>>>>> node was Zero, tried to reinstall the node, reboot the node,
>>>>>>>>>>>> restarted
>>>>>>>>>>>> several services, tailed a tons of logs etc but to no avail. When
>>>>>>>>>>>> only
>>>>>>>>>>>> one
>>>>>>>>>>>> node was left (that was actually running the hosted engine), I
>>>>>>>>>>>> brought
>>>>>>>>>>>> the
>>>>>>>>>>>> engine's vm down gracefully (hosted-engine --vm-shutdown I
>>>>>>>>>>>> belive) and
>>>>>>>>>>>> after
>>>>>>>>>>>> that, when I've tried to start the vm - it wouldn't load. Running
>>>>>>>>>>>> VNC
>>>>>>>>>>>> showed
>>>>>>>>>>>> that the filesystem inside the vm was corrupted and when I ran
>>>>>>>>>>>> fsck and
>>>>>>>>>>>> finally started up - it was too badly damaged. I succeded to
>>>>>>>>>>>> start the
>>>>>>>>>>>> engine itself (after repairing postgresql service that wouldn't
>>>>>>>>>>>> want to
>>>>>>>>>>>> start) but the database was damaged enough and acted pretty weird
>>>>>>>>>>>> (showed
>>>>>>>>>>>> that storage domains were down but the vm's were running fine
>>>>>>>>>>>> etc).
>>>>>>>>>>>> Lucky
>>>>>>>>>>>> me, I had already exported all of the VM's on the first sign of
>>>>>>>>>>>> trouble
>>>>>>>>>>>> and
>>>>>>>>>>>> then installed ovirt-engine on the dedicated server and attached
>>>>>>>>>>>> the
>>>>>>>>>>>> export
>>>>>>>>>>>> domain.
>>>>>>>>>>>>
>>>>>>>>>>>> So while really a usefull feature, and it's working (for the most
>>>>>>>>>>>> part
>>>>>>>>>>>> ie,
>>>>>>>>>>>> automatic migration works), manually migrating VM with the
>>>>>>>>>>>> hosted-engine
>>>>>>>>>>>> will lead to troubles.
>>>>>>>>>>>>
>>>>>>>>>>>> I hope that my experience with it, will be of use to you. It
>>>>>>>>>>>> happened to
>>>>>>>>>>>> me
>>>>>>>>>>>> two weeks ago, ovirt-engine was current (3.4.1) and there was no
>>>>>>>>>>>> fix
>>>>>>>>>>>> available.
>>>>>>>>>>>>
>>>>>>>>>>>> Regards,
>>>>>>>>>>>>
>>>>>>>>>>>> Ivan
>>>>>>>>>>>>
>>>>>>>>>>>> On 06/06/2014 05:12 AM, Andrew Lau wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> Hi,
>>>>>>>>>>>>
>>>>>>>>>>>> I'm seeing this weird message in my engine log
>>>>>>>>>>>>
>>>>>>>>>>>> 2014-06-06 03:06:09,380 INFO
>>>>>>>>>>>> [org.ovirt.engine.core.vdsbroker.VdsUpdateRunTimeInfo]
>>>>>>>>>>>> (DefaultQuartzScheduler_Worker-79) RefreshVmList vm id
>>>>>>>>>>>> 85d4cfb9-f063-4c7c-a9f8-2b74f5f7afa5 status = WaitForLaunch on
>>>>>>>>>>>> vds
>>>>>>>>>>>> ov-hv2-2a-08-23 ignoring it in the refresh until migration is
>>>>>>>>>>>> done
>>>>>>>>>>>> 2014-06-06 03:06:12,494 INFO
>>>>>>>>>>>> [org.ovirt.engine.core.vdsbroker.vdsbroker.DestroyVDSCommand]
>>>>>>>>>>>> (DefaultQuartzScheduler_Worker-89) START,
>>>>>>>>>>>> DestroyVDSCommand(HostName =
>>>>>>>>>>>> ov-hv2-2a-08-23, HostId = c04c62be-5d34-4e73-bd26-26f805b2dc60,
>>>>>>>>>>>> vmId=85d4cfb9-f063-4c7c-a9f8-2b74f5f7afa5, force=false,
>>>>>>>>>>>> secondsToWait=0, gracefully=false), log id: 62a9d4c1
>>>>>>>>>>>> 2014-06-06 03:06:12,561 INFO
>>>>>>>>>>>> [org.ovirt.engine.core.vdsbroker.vdsbroker.DestroyVDSCommand]
>>>>>>>>>>>> (DefaultQuartzScheduler_Worker-89) FINISH, DestroyVDSCommand, log
>>>>>>>>>>>> id:
>>>>>>>>>>>> 62a9d4c1
>>>>>>>>>>>> 2014-06-06 03:06:12,652 INFO
>>>>>>>>>>>>
>>>>>>>>>>>> [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
>>>>>>>>>>>> (DefaultQuartzScheduler_
>>>>>>>>>>>> Worker-89) Correlation ID: null, Call Stack:
>>>>>>>>>>>> null, Custom Event ID: -1, Message: VM HostedEngine is down. Exit
>>>>>>>>>>>> message: internal error Failed to acquire lock: error -243.
>>>>>>>>>>>>
>>>>>>>>>>>> It also appears to occur on the other hosts in the cluster,
>>>>>>>>>>>> except the
>>>>>>>>>>>> host which is running the hosted-engine. So right now 3 servers,
>>>>>>>>>>>> it
>>>>>>>>>>>> shows up twice in the engine UI.
>>>>>>>>>>>>
>>>>>>>>>>>> The engine VM continues to run peacefully, without any issues on
>>>>>>>>>>>> the
>>>>>>>>>>>> host which doesn't have that error.
>>>>>>>>>>>>
>>>>>>>>>>>> Any ideas?
>>>>>>>>>>>> _______________________________________________
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>>>>>>>>>>>> Users at ovirt.org
>>>>>>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>>>>>>>
>>>>>>>>>>>>
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