[Gluster-users] libgfapi failover problem on replica bricks

Tue Aug 5 07:40:13 UTC 2014

Ahha! For some reason I was not able to start the VM anymore, Proxmox VE
told me, that it is not able to read the qcow2 header due to permission is
denied for some reason. So I just deleted that file and created a new VM.
And the nex message I've got was this:

[2014-08-05 07:31:25.663412] E
[afr-self-heal-common.c:197:afr_sh_print_split_brain_log]
0-HA-fast-150G-PVE1-replicate-0: Unable to self-heal contents of
'/images/124/vm-124-disk-1.qcow2' (possible split-brain). Please delete the
file from all but the preferred subvolume.- Pending matrix:  [ [ 0 60 ] [
11 0 ] ]
[2014-08-05 07:31:25.663955] E
[afr-self-heal-common.c:2262:afr_self_heal_completion_cbk]
0-HA-fast-150G-PVE1-replicate-0: background  data self-heal failed on
/images/124/vm-124-disk-1.qcow2

2014-08-05 10:13 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:

>  I just responded to your earlier mail about how the log looks. The log
> comes on the mount's logfile
>
> Pranith
>
> On 08/05/2014 12:41 PM, Roman wrote:
>
> Ok, so I've waited enough, I think. Had no any traffic on switch ports
> between servers. Could not find any suitable log message about completed
> self-heal (waited about 30 minutes). Plugged out the other server's UTP
> cable this time and got in the same situation:
> root at gluster-test1:~# cat /var/log/dmesg
> -bash: /bin/cat: Input/output error
>
>  brick logs:
>  [2014-08-05 07:09:03.005474] I [server.c:762:server_rpc_notify]
> 0-HA-fast-150G-PVE1-server: disconnecting connectionfrom
> pve1-27649-2014/08/04-13:27:54:720789-HA-fast-150G-PVE1-client-0-0
> [2014-08-05 07:09:03.005530] I
> [server-helpers.c:729:server_connection_put] 0-HA-fast-150G-PVE1-server:
> Shutting down connection
> pve1-27649-2014/08/04-13:27:54:720789-HA-fast-150G-PVE1-client-0-0
> [2014-08-05 07:09:03.005560] I [server-helpers.c:463:do_fd_cleanup]
> 0-HA-fast-150G-PVE1-server: fd cleanup on /images/124/vm-124-disk-1.qcow2
> [2014-08-05 07:09:03.005797] I
> [server-helpers.c:617:server_connection_destroy]
> 0-HA-fast-150G-PVE1-server: destroyed connection of
> pve1-27649-2014/08/04-13:27:54:720789-HA-fast-150G-PVE1-client-0-0
>
>
>
>
>
> 2014-08-05 9:53 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:
>
>>  Do you think it is possible for you to do these tests on the latest
>> version 3.5.2? 'gluster volume heal <volname> info' would give you that
>> information in versions > 3.5.1.
>> Otherwise you will have to check it from either the logs, there will be
>> self-heal completed message on the mount logs (or) by observing 'getfattr
>> -d -m. -e hex <image-file-on-bricks>'
>>
>> Pranith
>>
>>
>> On 08/05/2014 12:09 PM, Roman wrote:
>>
>> Ok, I understand. I will try this shortly.
>> How can I be sure, that healing process is done, if I am not able to see
>> its status?
>>
>>
>> 2014-08-05 9:30 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:
>>
>>>  Mounts will do the healing, not the self-heal-daemon. The problem I
>>> feel is that whichever process does the healing has the latest information
>>> about the good bricks in this usecase. Since for VM usecase, mounts should
>>> have the latest information, we should let the mounts do the healing. If
>>> the mount accesses the VM image either by someone doing operations inside
>>> the VM or explicit stat on the file it should do the healing.
>>>
>>> Pranith.
>>>
>>>
>>> On 08/05/2014 10:39 AM, Roman wrote:
>>>
>>> Hmmm, you told me to turn it off. Did I understood something wrong?
>>> After I issued the command you've sent me, I was not able to watch the
>>> healing process, it said, it won't be healed, becouse its turned off.
>>>
>>>
>>> 2014-08-05 5:39 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:
>>>
>>>>  You didn't mention anything about self-healing. Did you wait until the
>>>> self-heal is complete?
>>>>
>>>> Pranith
>>>>
>>>> On 08/04/2014 05:49 PM, Roman wrote:
>>>>
>>>>  Hi!
>>>> Result is pretty same. I set the switch port down for 1st server, it
>>>> was ok. Then set it up back and set other server's port off. and it
>>>> triggered IO error on two virtual machines: one with local root FS but
>>>> network mounted storage. and other with network root FS. 1st gave an error
>>>> on copying to or from the mounted network disk, other just gave me an error
>>>> for even reading log.files.
>>>>
>>>>  cat: /var/log/alternatives.log: Input/output error
>>>>  then I reset the kvm VM and it said me, there is no boot device. Next
>>>> I virtually powered it off and then back on and it has booted.
>>>>
>>>>  By the way, did I have to start/stop volume?
>>>>
>>>>  >> Could you do the following and test it again?
>>>> >> gluster volume set <volname> cluster.self-heal-daemon off
>>>>
>>>> >>Pranith
>>>>
>>>>
>>>>
>>>>
>>>> 2014-08-04 14:10 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com
>>>> >:
>>>>
>>>>>
>>>>> On 08/04/2014 03:33 PM, Roman wrote:
>>>>>
>>>>>  Hello!
>>>>>
>>>>>  Facing the same problem as mentioned here:
>>>>>
>>>>>
>>>>> http://supercolony.gluster.org/pipermail/gluster-users/2014-April/039959.html
>>>>>
>>>>>  my set up is up and running, so i'm ready to help you back with
>>>>> feedback.
>>>>>
>>>>>  setup:
>>>>> proxmox server as client
>>>>>  2 gluster physical  servers
>>>>>
>>>>>  server side and client side both running atm 3.4.4 glusterfs from
>>>>> gluster repo.
>>>>>
>>>>>  the problem is:
>>>>>
>>>>>  1. craeted replica bricks.
>>>>> 2. mounted in proxmox (tried both promox ways: via GUI and fstab (with
>>>>> backup volume line), btw while mounting via fstab I'm unable to launch a VM
>>>>> without cache, meanwhile direct-io-mode is enabled in fstab line)
>>>>> 3. installed VM
>>>>> 4. bring one volume down - ok
>>>>>  5. bringing up, waiting for sync is done.
>>>>> 6. bring other volume down - getting IO errors on VM guest and not
>>>>> able to restore the VM after I reset the VM via host. It says (no bootable
>>>>> media). After I shut it down (forced) and bring back up, it boots.
>>>>>
>>>>>  Could you do the following and test it again?
>>>>> gluster volume set <volname> cluster.self-heal-daemon off
>>>>>
>>>>> Pranith
>>>>>
>>>>>
>>>>>  Need help. Tried 3.4.3, 3.4.4.
>>>>> Still missing pkg-s for 3.4.5 for debian and 3.5.2 (3.5.1 always gives
>>>>> a healing error for some reason)
>>>>>
>>>>>  --
>>>>> Best regards,
>>>>> Roman.
>>>>>
>>>>>
>>>>>  _______________________________________________
>>>>> Gluster-users mailing listGluster-users at gluster.orghttp://supercolony.gluster.org/mailman/listinfo/gluster-users
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>  --
>>>> Best regards,
>>>> Roman.
>>>>
>>>>
>>>>
>>>
>>>
>>>  --
>>> Best regards,
>>> Roman.
>>>
>>>
>>>
>>
>>
>>  --
>> Best regards,
>> Roman.
>>
>>
>>
>
>
>  --
> Best regards,
> Roman.
>
>
>

-- 
Best regards,
Roman.
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