[Gluster-users] libgfapi failover problem on replica bricks

Roman romeo.r at gmail.com
Tue Aug 5 13:33:21 UTC 2014 

Nope, it is not working. But this time it went a bit other way

root at gluster-client:~# dmesg
Segmentation fault


I was not able even to start the VM after I done the tests

Could not read qcow2 header: Operation not permitted

And it seems, it never starts to sync files after first disconnect. VM
survives first disconnect, but not second (I waited around 30 minutes).
Also, I've got network.ping-timeout: 2 in volume settings, but logs react
on first disconnect around 30 seconds. Second was faster, 2 seconds.

Reaction was different also:

slower one:
[2014-08-05 13:26:19.558435] W [socket.c:514:__socket_rwv] 0-glusterfs:
readv failed (Connection timed out)
[2014-08-05 13:26:19.558485] W [socket.c:1962:__socket_proto_state_machine]
0-glusterfs: reading from socket failed. Error (Connection timed out), peer
(10.250.0.1:24007)
[2014-08-05 13:26:21.281426] W [socket.c:514:__socket_rwv]
0-HA-fast-150G-PVE1-client-0: readv failed (Connection timed out)
[2014-08-05 13:26:21.281474] W [socket.c:1962:__socket_proto_state_machine]
0-HA-fast-150G-PVE1-client-0: reading from socket failed. Error (Connection
timed out), peer (10.250.0.1:49153)
[2014-08-05 13:26:21.281507] I [client.c:2098:client_rpc_notify]
0-HA-fast-150G-PVE1-client-0: disconnected

the fast one:
2014-08-05 12:52:44.607389] C
[client-handshake.c:127:rpc_client_ping_timer_expired]
0-HA-fast-150G-PVE1-client-1: server 10.250.0.2:49153 has not responded in
the last 2 seconds, disconnecting.
[2014-08-05 12:52:44.607491] W [socket.c:514:__socket_rwv]
0-HA-fast-150G-PVE1-client-1: readv failed (No data available)
[2014-08-05 12:52:44.607585] E [rpc-clnt.c:368:saved_frames_unwind]
(-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_notify+0xf8)
[0x7fcb1b4b0558]
(-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_connection_cleanup+0xc3)
[0x7fcb1b4aea63]
(-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(saved_frames_destroy+0xe)
[0x7fcb1b4ae97e]))) 0-HA-fast-150G-PVE1-client-1: forced unwinding frame
type(GlusterFS 3.3) op(LOOKUP(27)) called at 2014-08-05 12:52:42.463881
(xid=0x381883x)
[2014-08-05 12:52:44.607604] W
[client-rpc-fops.c:2624:client3_3_lookup_cbk] 0-HA-fast-150G-PVE1-client-1:
remote operation failed: Transport endpoint is not connected. Path: /
(00000000-0000-0000-0000-000000000001)
[2014-08-05 12:52:44.607736] E [rpc-clnt.c:368:saved_frames_unwind]
(-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_notify+0xf8)
[0x7fcb1b4b0558]
(-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_connection_cleanup+0xc3)
[0x7fcb1b4aea63]
(-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(saved_frames_destroy+0xe)
[0x7fcb1b4ae97e]))) 0-HA-fast-150G-PVE1-client-1: forced unwinding frame
type(GlusterFS Handshake) op(PING(3)) called at 2014-08-05 12:52:42.463891
(xid=0x381884x)
[2014-08-05 12:52:44.607753] W [client-handshake.c:276:client_ping_cbk]
0-HA-fast-150G-PVE1-client-1: timer must have expired
[2014-08-05 12:52:44.607776] I [client.c:2098:client_rpc_notify]
0-HA-fast-150G-PVE1-client-1: disconnected



I've got SSD disks (just for an info).
Should I go and give a try for 3.5.2?



2014-08-05 13:06 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:

>  reply along with gluster-users please :-). May be you are hitting 'reply'
> instead of 'reply all'?
>
> Pranith
>
> On 08/05/2014 03:35 PM, Roman wrote:
>
> To make sure and clean, I've created another VM with raw format and goint
> to repeat those steps. So now I've got two VM-s one with qcow2 format and
> other with raw format. I will send another e-mail shortly.
>
>
> 2014-08-05 13:01 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:
>
>>
>> On 08/05/2014 03:07 PM, Roman wrote:
>>
>> really, seems like the same file
>>
>>  stor1:
>> a951641c5230472929836f9fcede6b04
>>  /exports/fast-test/150G/images/127/vm-127-disk-1.qcow2
>>
>>  stor2:
>> a951641c5230472929836f9fcede6b04
>>  /exports/fast-test/150G/images/127/vm-127-disk-1.qcow2
>>
>>
>>  one thing I've seen from logs, that somehow proxmox VE is connecting
>> with wrong version to servers?
>> [2014-08-05 09:23:45.218550] 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)
>>
>>  It is the rpc (over the network data structures) version, which is not
>> changed at all from 3.3 so thats not a problem. So what is the conclusion?
>> Is your test case working now or not?
>>
>> Pranith
>>
>>   but if I issue:
>>  root at pve1:~# glusterfs -V
>> glusterfs 3.4.4 built on Jun 28 2014 03:44:57
>>  seems ok.
>>
>>  server  use 3.4.4 meanwhile
>> [2014-08-05 09:23:45.117875] I [server-handshake.c:567:server_setvolume]
>> 0-HA-fast-150G-PVE1-server: accepted client from
>> stor1-9004-2014/08/05-09:23:45:93538-HA-fast-150G-PVE1-client-1-0 (version:
>> 3.4.4)
>>  [2014-08-05 09:23:49.103035] I
>> [server-handshake.c:567:server_setvolume] 0-HA-fast-150G-PVE1-server:
>> accepted client from
>> stor1-8998-2014/08/05-09:23:45:89883-HA-fast-150G-PVE1-client-0-0 (version:
>> 3.4.4)
>>
>>  if this could be the reason, of course.
>> I did restart the Proxmox VE yesterday (just for an information)
>>
>>
>>
>>
>>
>> 2014-08-05 12:30 GMT+03:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:
>>
>>>
>>> On 08/05/2014 02:33 PM, Roman wrote:
>>>
>>> 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/
>>>
>>>  According to the changelogs, the file doesn't need any healing. Could
>>> you stop the operations on the VMs and take md5sum on both these machines?
>>>
>>> Pranith
>>>
>>>
>>>
>>>
>>>
>>> 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.
>>>
>>>
>>>
>>
>>
>>  --
>> Best regards,
>> Roman.
>>
>>
>>
>
>
>  --
> Best regards,
> Roman.
>
>
>


-- 
Best regards,
Roman.
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