[Gluster-users] libgfapi failover problem on replica bricks

Roman romeo.r at gmail.com
Tue Aug 5 09:03:50 UTC 2014 

Waited long enough for now, still different sizes and no logs about healing
:(

stor1
# file: exports/fast-test/150G/images/127/vm-127-disk-1.qcow2
trusted.afr.HA-fast-150G-PVE1-client-0=0x000000000000000000000000
trusted.afr.HA-fast-150G-PVE1-client-1=0x000000000000000000000000
trusted.gfid=0xf10ad81b58484bcd9b385a36a207f921

root at stor1:~# du -sh /exports/fast-test/150G/images/127/
1.2G    /exports/fast-test/150G/images/127/


stor2
# file: exports/fast-test/150G/images/127/vm-127-disk-1.qcow2
trusted.afr.HA-fast-150G-PVE1-client-0=0x000000000000000000000000
trusted.afr.HA-fast-150G-PVE1-client-1=0x000000000000000000000000
trusted.gfid=0xf10ad81b58484bcd9b385a36a207f921


root at stor2:~# du -sh /exports/fast-test/150G/images/127/
1.4G    /exports/fast-test/150G/images/127/




2014-08-05 11:49 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:

>
> On 08/05/2014 02:06 PM, Roman wrote:
>
> Well, it seems like it doesn't see the changes were made to the volume ? I
> created two files 200 and 100 MB (from /dev/zero) after I disconnected the
> first brick. Then connected it back and got these logs:
>
>  [2014-08-05 08:30:37.830150] I [glusterfsd-mgmt.c:1584:mgmt_getspec_cbk]
> 0-glusterfs: No change in volfile, continuing
> [2014-08-05 08:30:37.830207] I [rpc-clnt.c:1676:rpc_clnt_reconfig]
> 0-HA-fast-150G-PVE1-client-0: changing port to 49153 (from 0)
> [2014-08-05 08:30:37.830239] W [socket.c:514:__socket_rwv]
> 0-HA-fast-150G-PVE1-client-0: readv failed (No data available)
> [2014-08-05 08:30:37.831024] I
> [client-handshake.c:1659:select_server_supported_programs]
> 0-HA-fast-150G-PVE1-client-0: Using Program GlusterFS 3.3, Num (1298437),
> Version (330)
> [2014-08-05 08:30:37.831375] I
> [client-handshake.c:1456:client_setvolume_cbk]
> 0-HA-fast-150G-PVE1-client-0: Connected to 10.250.0.1:49153, attached to
> remote volume '/exports/fast-test/150G'.
> [2014-08-05 08:30:37.831394] I
> [client-handshake.c:1468:client_setvolume_cbk]
> 0-HA-fast-150G-PVE1-client-0: Server and Client lk-version numbers are not
> same, reopening the fds
> [2014-08-05 08:30:37.831566] I
> [client-handshake.c:450:client_set_lk_version_cbk]
> 0-HA-fast-150G-PVE1-client-0: Server lk version = 1
>
>
>  [2014-08-05 08:30:37.830150] I [glusterfsd-mgmt.c:1584:mgmt_getspec_cbk]
> 0-glusterfs: No change in volfile, continuing
>  this line seems weird to me tbh.
> I do not see any traffic on switch interfaces between gluster servers,
> which means, there is no syncing between them.
> I tried to ls -l the files on the client and servers to trigger the
> healing, but seems like no success. Should I wait more?
>
> Yes, it should take around 10-15 minutes. Could you provide 'getfattr -d
> -m. -e hex <file-on-brick>' on both the bricks.
>
> Pranith
>
>
>
> 2014-08-05 11:25 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:
>
>>
>> On 08/05/2014 01:10 PM, Roman wrote:
>>
>> 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:
>>
>>  Seems like these are the messages where you took down the bricks before
>> self-heal. Could you restart the run waiting for self-heals to complete
>> before taking down the next brick?
>>
>> Pranith
>>
>>
>>
>>  [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.
>>
>>
>>
>
>
>  --
> Best regards,
> Roman.
>
>
>


-- 
Best regards,
Roman.
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