[ovirt-users] vm.conf on one of the node is missing

Thu Nov 24 22:05:17 UTC 2016

On Thu, Nov 24, 2016 at 3:35 PM, Simone Tiraboschi <stirabos at redhat.com>
wrote:

>
>
> On Thu, Nov 24, 2016 at 3:23 PM, knarra <knarra at redhat.com> wrote:
>
>> On 11/24/2016 07:47 PM, Simone Tiraboschi wrote:
>>
>>
>>
>> On Thu, Nov 24, 2016 at 3:06 PM, knarra <knarra at redhat.com> wrote:
>>
>>> On 11/24/2016 07:27 PM, Simone Tiraboschi wrote:
>>>
>>>
>>>
>>> On Thu, Nov 24, 2016 at 2:39 PM, knarra <knarra at redhat.com> wrote:
>>>
>>>> On 11/24/2016 06:56 PM, Simone Tiraboschi wrote:
>>>>
>>>>
>>>>
>>>> On Thu, Nov 24, 2016 at 2:08 PM, knarra <knarra at redhat.com> wrote:
>>>>
>>>>> On 11/24/2016 06:15 PM, Simone Tiraboschi wrote:
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Nov 24, 2016 at 1:26 PM, knarra <knarra at redhat.com> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>>     I have three nodes with glusterfs as storage domain. For some
>>>>>> reason i see that vm.conf from /var/run/ovirt-hosted-engine-ha is
>>>>>> missing and due to this on one of my host i see that Hosted Engine HA : Not
>>>>>> Active. Once i copy the file from some other node and restart
>>>>>> ovirt-ha-broker and ovirt-ha-agent services everything works fine. But then
>>>>>> this happens again. Can some please help me identify why this happens.
>>>>>> Below is the log i see in ovirt-ha-agent.logs.
>>>>>>
>>>>>>
>>>>>> https://paste.fedoraproject.org/489120/79990345/
>>>>>>
>>>>>>
>>>>> Once the engine correctly imported the hosted-engine storage domain, a
>>>>> couple of OVF_STORE volumes will appear there.
>>>>> Every modification to the engine VM configuration will be written by
>>>>> the engine into that OVF_STORE, so all the ovirt-ha-agent running on the
>>>>> hosted-engine hosts will be able to re-start the engine VM with a coherent
>>>>> configuration.
>>>>>
>>>>> Till the engine imports the hosted-engine storage domain,
>>>>> ovirt-ha-agent will fall back to the initial vm.conf.
>>>>>
>>>>> In you case the OVF_STORE volume is there,
>>>>> but the agent fails extracting the engine VM configuration:
>>>>> MainThread::INFO::2016-11-24 17:55:04,914::ovf_store::112::
>>>>> ovirt_hosted_engine_ha.lib.ovf.ovf_store.OVFStore::(getEngineVMOVF)
>>>>> Extracting Engine VM OVF from the OVF_STORE
>>>>> MainThread::INFO::2016-11-24 17:55:04,919::ovf_store::119::
>>>>> ovirt_hosted_engine_ha.lib.ovf.ovf_store.OVFStore::(getEngineVMOVF)
>>>>> OVF_STORE volume path: /rhev/data-center/mnt/glusterSD/10.70.36.79:
>>>>> _engine/27f054c3-c245-4039-b42a-c28b37043016/i
>>>>> mages/fdf49778-9a06-49c6-bf7a-a0f12425911c/8c954add-6bcf-47f
>>>>> 8-ac2e-4c85fc3f8699
>>>>> MainThread::ERROR::2016-11-24 17:55:04,928::ovf_store::124::
>>>>> ovirt_hosted_engine_ha.lib.ovf.ovf_store.OVFStore::(getEngineVMOVF)
>>>>> Unable to extract HEVM OVF
>>>>>
>>>>> So it tries to rollback to the initial vm.conf, but also that one
>>>>> seams to miss some values and so the agent is failing:
>>>>> MainThread::ERROR::2016-11-24 17:55:04,974::agent::205::ovir
>>>>> t_hosted_engine_ha.agent.agent.Agent::(_run_agent) Error:
>>>>> ''Configuration value not found: file=/var/run/ovirt-hosted-engine-ha/vm.conf,
>>>>> key=memSize'' - trying to restart agent
>>>>>
>>>>> Both of the issue seams storage related, could yuo please share your
>>>>> gluster logs?
>>>>>
>>>>>
>>>>>>
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>> kasturi
>>>>>>
>>>>>>
>>>>> Hi Simone,
>>>>>
>>>>>     Below [1] is the link for the sosreports on the first two hosts.
>>>>> The third host has some issue. Once it is up will give the sosreport from
>>>>> there as well.
>>>>>
>>>>
>>>> And the host where you see the initial issue was the third one?
>>>>
>>>> It is on the first host.
>>>>
>>>>
>>>>
>>>>
>>> It seams that host1 is failing reading from the the hosted-engine
>>> storage domain:
>>>
>>> [2016-11-24 12:33:43.678467] W [MSGID: 114031]
>>> [client-rpc-fops.c:2938:client3_3_lookup_cbk] 0-engine-client-2: remote
>>> operation failed. Path: / (00000000-0000-0000-0000-000000000001)
>>> [Transport endpoint is not connected]
>>> [2016-11-24 12:33:43.678747] E [rpc-clnt.c:365:saved_frames_unwind]
>>> (--> /lib64/libglusterfs.so.0(_gf_log_callingfn+0x192)[0x7f077eba1642]
>>> (--> /lib64/libgfrpc.so.0(saved_frames_unwind+0x1de)[0x7f077e96775e]
>>> (--> /lib64/libgfrpc.so.0(saved_frames_destroy+0xe)[0x7f077e96786e]
>>> (--> /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x84)[0x7f077e968fc4]
>>> (--> /lib64/libgfrpc.so.0(rpc_clnt_notify+0x120)[0x7f077e9698a0] )))))
>>> 0-engine-client-2: forced unwinding frame type(GlusterFS 3.3)
>>> op(LOOKUP(27)) called at 2016-11-24 12:33:07.495178 (xid=0x82a1c)
>>> [2016-11-24 12:33:43.678982] E [rpc-clnt.c:365:saved_frames_unwind]
>>> (--> /lib64/libglusterfs.so.0(_gf_log_callingfn+0x192)[0x7f077eba1642]
>>> (--> /lib64/libgfrpc.so.0(saved_frames_unwind+0x1de)[0x7f077e96775e]
>>> (--> /lib64/libgfrpc.so.0(saved_frames_destroy+0xe)[0x7f077e96786e]
>>> (--> /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x84)[0x7f077e968fc4]
>>> (--> /lib64/libgfrpc.so.0(rpc_clnt_notify+0x120)[0x7f077e9698a0] )))))
>>> 0-engine-client-2: forced unwinding frame type(GlusterFS 3.3)
>>> op(LOOKUP(27)) called at 2016-11-24 12:33:08.770637 (xid=0x82a1d)
>>> [2016-11-24 12:33:43.679001] W [MSGID: 114031]
>>> [client-rpc-fops.c:2938:client3_3_lookup_cbk] 0-engine-client-2: remote
>>> operation failed. Path: /27f054c3-c245-4039-b42a-c28b3
>>> 7043016/images/39960f40-4aae-4714-ba73-1637785fae7c/38fa3519-f21e-4671-8c69-d1497ff8a490
>>> (1090c25b-9c90-434e-a133-faf9647cc992) [Transport endpoint is not
>>> connected]
>>> [2016-11-24 12:33:43.679303] E [rpc-clnt.c:365:saved_frames_unwind]
>>> (--> /lib64/libglusterfs.so.0(_gf_log_callingfn+0x192)[0x7f077eba1642]
>>> (--> /lib64/libgfrpc.so.0(saved_frames_unwind+0x1de)[0x7f077e96775e]
>>> (--> /lib64/libgfrpc.so.0(saved_frames_destroy+0xe)[0x7f077e96786e]
>>> (--> /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x84)[0x7f077e968fc4]
>>> (--> /lib64/libgfrpc.so.0(rpc_clnt_notify+0x120)[0x7f077e9698a0] )))))
>>> 0-engine-client-2: forced unwinding frame type(GlusterFS 3.3)
>>> op(LOOKUP(27)) called at 2016-11-24 12:33:11.096856 (xid=0x82a1e)
>>> [2016-11-24 12:33:43.679596] E [rpc-clnt.c:365:saved_frames_unwind]
>>> (--> /lib64/libglusterfs.so.0(_gf_log_callingfn+0x192)[0x7f077eba1642]
>>> (--> /lib64/libgfrpc.so.0(saved_frames_unwind+0x1de)[0x7f077e96775e]
>>> (--> /lib64/libgfrpc.so.0(saved_frames_destroy+0xe)[0x7f077e96786e]
>>> (--> /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x84)[0x7f077e968fc4]
>>> (--> /lib64/libgfrpc.so.0(rpc_clnt_notify+0x120)[0x7f077e9698a0] )))))
>>> 0-engine-client-2: forced unwinding frame type(GF-DUMP) op(NULL(2)) called
>>> at 2016-11-24 12:33:13.673743 (xid=0x82a1f)
>>> [2016-11-24 12:33:43.682310] I [socket.c:3401:socket_submit_request]
>>> 0-engine-client-2: not connected (priv->connected = 0)
>>> [2016-11-24 12:33:43.682328] W [rpc-clnt.c:1640:rpc_clnt_submit]
>>> 0-engine-client-2: failed to submit rpc-request (XID: 0x82a20 Program:
>>> GlusterFS 3.3, ProgVers: 330, Proc: 30) to rpc-transport (engine-client-2)
>>> [2016-11-24 12:33:43.682391] W [rpc-clnt.c:1640:rpc_clnt_submit]
>>> 0-engine-client-2: failed to submit rpc-request (XID: 0x82a21 Program:
>>> GlusterFS 3.3, ProgVers: 330, Proc: 27) to rpc-transport (engine-client-2)
>>> [2016-11-24 12:33:43.682441] W [rpc-clnt.c:1640:rpc_clnt_submit]
>>> 0-engine-client-2: failed to submit rpc-request (XID: 0x82a22 Program:
>>> GlusterFS 3.3, ProgVers: 330, Proc: 27) to rpc-transport (engine-client-2)
>>> [2016-11-24 12:33:43.682441] W [MSGID: 114031]
>>> [client-rpc-fops.c:2938:client3_3_lookup_cbk] 0-engine-client-2: remote
>>> operation failed. Path: /27f054c3-c245-4039-b42a-c28b37043016
>>> (a64398f5-3fa3-48fe-9d40-d3860876cc2c) [Transport endpoint is not
>>> connected]
>>> [2016-11-24 12:33:43.682492] W [rpc-clnt-ping.c:203:rpc_clnt_ping_cbk]
>>> 0-engine-client-2: socket disconnected
>>> [2016-11-24 12:33:43.682536] I [MSGID: 114018]
>>> [client.c:2280:client_rpc_notify] 0-engine-client-2: disconnected from
>>> engine-client-2. Client process will keep trying to connect to glusterd
>>> until brick's port is available
>>> [2016-11-24 12:33:43.682562] W [rpc-clnt.c:1640:rpc_clnt_submit]
>>> 0-engine-client-2: failed to submit rpc-request (XID: 0x82a23 Program:
>>> GlusterFS 3.3, ProgVers: 330, Proc: 27) to rpc-transport (engine-client-2)
>>> The message "W [MSGID: 114031] [client-rpc-fops.c:2938:client3_3_lookup_cbk]
>>> 0-engine-client-2: remote operation failed. Path:
>>> /27f054c3-c245-4039-b42a-c28b37043016 (a64398f5-3fa3-48fe-9d40-d3860876cc2c)
>>> [Transport endpoint is not connected]" repeated 2 times between [2016-11-24
>>> 12:33:43.682441] and [2016-11-24 12:33:43.682599]
>>> [2016-11-24 12:33:43.688324] W [MSGID: 114031]
>>> [client-rpc-fops.c:2938:client3_3_lookup_cbk] 0-engine-client-2: remote
>>> operation failed. Path: (null) (00000000-0000-0000-0000-000000000000)
>>> [Transport endpoint is not connected]
>>>
>>> Before that there was a lot of self-healing activities.
>>>
>>> simone, these logs indicates that first host is not able to connect to
>>> the brick in the third host since it was powered down.  It reads remote
>>> operation failed on engine_client_2 .
>>>
>>
>> Can you please share the output of
>>  source /etc/ovirt-hosted-engine/hosted-engine.conf
>>  find /rhev/data-center/ -path "*/${sdUUID}/images/${conf_image_UUID}/${conf_volume_UUID}"
>> -type f -exec sh -c 'sudo -u vdsm dd if=$1 2>/dev/null | tar -xOvf -
>> vm.conf  2>/dev/null' {} {} \;
>> executed on your first host?
>>
>> output for the above command https://paste.fedoraproject.or
>> g/489159/97176147/
>>
>>
> This one looks fine,
> now the point is why the OVF_STORE doesn't seams so,
>
> Could you please try executing:
> sudo -u vdsm dd if=/rhev/data-center/mnt/glusterSD/10.70.36.79:_engine/
> 27f054c3-c245-4039-b42a-c28b37043016/images/fdf49778-9a06-49c6-
> bf7a-a0f12425911c/8c954add-6bcf-47f8-ac2e-4c85fc3f8699 | tar -xOvf -
> 21e0e248-19bf-47b3-b72f-6a3740d9ff43.ovf
>
>

OK, found: it's definitively a regression introduced (just on master) with
https://gerrit.ovirt.org/#/c/66103/

The code that read and writes the HE configuration and the OVF_STORE
from/to the volume on shared storage (with dd) is shared between
ovirt-hosted-engine-setup (which runs as root) and ovirt-ha-agent (which
runs as vdsm user).
In order to behave correctly (against root squash on NFC for instance), it
was always running 'sudo -u vdsm dd ...' instead of just 'dd' regardless of
the active user.
But since  https://gerrit.ovirt.org/#/c/66103/ , vdsm user cannot run
anymore 'sudo -u vdsm dd ...' and so this issue.

I opened a bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1398443

Kasturi, you got it just on one of your hosts since the other two run an
older VDSM build.

>
> Simone, i ran the following steps and i see that vm.conf file is missing.
>>
>> 1) Installed three nodes with glusterfs as storage domains.
>>
>> 2) Configured power management on all the nodes and ran the command
>> 'poweroff -f' on one of the node.
>>
>> 3) Engine tried to fence the host and it logged the message 'Host is
>> rebooting' but this never came up.
>>
>> 4) After some time i manually powered on the host and once the host is up
>> i see that Hosted Engine HA : Not active.
>>
>> 5) I see the following error message in broker.log and vm.conf file is
>> missing.
>>
>> Thread-1::ERROR::2016-11-24 19:32:11,651::listener::192::o
>> virt_hosted_engine_ha.broker.listener.ConnectionHandler::(handle) Error
>> handling request, data: 'set-storage-domain
>>  FilesystemBackend dom_type=glusterfs sd_uuid=27f054c3-c245-4039-b42
>> a-c28b37043016'
>> Traceback (most recent call last):
>>   File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/broker/listener.py",
>> line 166, in handle
>>     data)
>>   File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/broker/listener.py",
>> line 299, in _dispatch
>>     .set_storage_domain(client, sd_type, **options)
>>   File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/broker/storage_broker.py",
>> line 66, in set_storage_domain
>>     self._backends[client].connect()
>>   File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/storage_backends.py",
>> line 461, in connect
>>     self._dom_type)
>>   File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/storage_backends.py",
>> line 108, in get_domain_path
>>     " in {1}".format(sd_uuid, parent))
>> BackendFailureException: path to storage domain
>> 27f054c3-c245-4039-b42a-c28b37043016 not found in
>> /rhev/data-center/mnt/glusterSD
>>
>> Thanks
>> kasturi
>>
>>
>>
>>>
>>>
>>>
>>>> [1] http://rhsqe-repo.lab.eng.blr.redhat.com/sosreports/HC/vm_conf/
>>>>>
>>>>> Thanks
>>>>>
>>>>> kasturi
>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
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