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Ing. Luca Lazzeroni - Trend Servizi Srl

2018-Jan-16 17:17 UTC

[Gluster-users] [Possibile SPAM] Re: Problem with Gluster 3.12.4, VM and sharding

I've made the test with raw image format (preallocated too) and the 
corruption problem is still there (but without errors in bricks' log file).

What does the "link" error in bricks log files means ?

I've seen the source code looking for the lines where it happens and it 
seems a warning (it doesn't imply a failure).



Il 16/01/2018 17:39, Ing. Luca Lazzeroni - Trend Servizi Srl ha
scritto:>
> An update:
>
> I've tried, for my tests, to create the vm volume as
>
> qemu-img create -f qcow2 -o preallocation=full 
> gluster://gluster1/Test/Test-vda.img 20G
>
> et voila !
>
> No errors at all, neither in bricks' log file (the "link
failed"
> message disappeared), neither in VM (no corruption and installed 
> succesfully).
>
> I'll do another test with a fully preallocated raw image.
>
>
>
> Il 16/01/2018 16:31, Ing. Luca Lazzeroni - Trend Servizi Srl ha scritto:
>>
>> I've just done all the steps to reproduce the problem.
>>
>> Tha VM volume has been created via "qemu-img create -f qcow2 
>> Test-vda2.qcow2 20G" on the gluster volume mounted via FUSE.
I've
>> tried also to create the volume with preallocated metadata, which 
>> moves the problem a bit far away (in time). The volume is a replice 3 
>> arbiter 1 volume hosted on XFS bricks.
>>
>> Here are the informations:
>>
>> [root at ovh-ov1 bricks]# gluster volume info gv2a2
>>
>> Volume Name: gv2a2
>> Type: Replicate
>> Volume ID: 83c84774-2068-4bfc-b0b9-3e6b93705b9f
>> Status: Started
>> Snapshot Count: 0
>> Number of Bricks: 1 x (2 + 1) = 3
>> Transport-type: tcp
>> Bricks:
>> Brick1: gluster1:/bricks/brick2/gv2a2
>> Brick2: gluster3:/bricks/brick3/gv2a2
>> Brick3: gluster2:/bricks/arbiter_brick_gv2a2/gv2a2 (arbiter)
>> Options Reconfigured:
>> storage.owner-gid: 107
>> storage.owner-uid: 107
>> user.cifs: off
>> features.shard: on
>> cluster.shd-wait-qlength: 10000
>> cluster.shd-max-threads: 8
>> cluster.locking-scheme: granular
>> cluster.data-self-heal-algorithm: full
>> cluster.server-quorum-type: server
>> cluster.quorum-type: auto
>> cluster.eager-lock: enable
>> network.remote-dio: enable
>> performance.low-prio-threads: 32
>> performance.io-cache: off
>> performance.read-ahead: off
>> performance.quick-read: off
>> transport.address-family: inet
>> nfs.disable: off
>> performance.client-io-threads: off
>>
>> /var/log/glusterfs/glusterd.log:
>>
>> [2018-01-15 14:17:50.196228] I [MSGID: 106488] 
>> [glusterd-handler.c:1548:__glusterd_handle_cli_get_volume] 
>> 0-management: Received get vol req
>> [2018-01-15 14:25:09.555214] I [MSGID: 106488] 
>> [glusterd-handler.c:1548:__glusterd_handle_cli_get_volume] 
>> 0-management: Received get vol req
>>
>> (empty because today it's 2018-01-16)
>>
>> /var/log/glusterfs/glustershd.log:
>>
>> [2018-01-14 02:23:02.731245] I 
>> [glusterfsd-mgmt.c:1821:mgmt_getspec_cbk] 0-glusterfs: No change in 
>> volfile,continuing
>>
>> (empty too)
>>
>> /var/log/glusterfs/bricks/brick-brick2-gv2a2.log (the interested
volume):
>>
>> [2018-01-16 15:14:37.809965] I [MSGID: 115029] 
>> [server-handshake.c:793:server_setvolume] 0-gv2a2-server: accepted 
>> client from 
>> ovh-ov1-10302-2018/01/16-15:14:37:790306-gv2a2-client-0-0-0 (version: 
>> 3.12.4)
>> [2018-01-16 15:16:41.471751] E [MSGID: 113020] 
>> [posix.c:1485:posix_mknod] 0-gv2a2-posix: setting gfid on 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.4
failed
>> [2018-01-16 15:16:41.471745] W [MSGID: 113096] 
>> [posix-handle.c:770:posix_handle_hard] 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.4
->
>>
/bricks/brick2/gv2a2/.glusterfs/a0/14/a0144df3-8d89-4aed-872e-5fef141e9e1efailed
>> [File exists]
>> [2018-01-16 15:16:42.593392] W [MSGID: 113096] 
>> [posix-handle.c:770:posix_handle_hard] 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.5
->
>>
/bricks/brick2/gv2a2/.glusterfs/eb/04/eb044e6e-3a23-40a4-9ce1-f13af148eb67failed
>> [File exists]
>> [2018-01-16 15:16:42.593426] E [MSGID: 113020] 
>> [posix.c:1485:posix_mknod] 0-gv2a2-posix: setting gfid on 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.5
failed
>> [2018-01-16 15:17:04.129593] W [MSGID: 113096] 
>> [posix-handle.c:770:posix_handle_hard] 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.8
->
>>
/bricks/brick2/gv2a2/.glusterfs/dc/92/dc92bd0a-0d46-4826-a4c9-d073a924dd8dfailed
>> [File exists]
>> The message "W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
>> 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.8
->
>>
/bricks/brick2/gv2a2/.glusterfs/dc/92/dc92bd0a-0d46-4826-a4c9-d073a924dd8dfailed
>> [File exists]" repeated 5 times between [2018-01-16
15:17:04.129593]
>> and [2018-01-16 15:17:04.129593]
>> [2018-01-16 15:17:04.129661] E [MSGID: 113020] 
>> [posix.c:1485:posix_mknod] 0-gv2a2-posix: setting gfid on 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.8
failed
>> [2018-01-16 15:17:08.279162] W [MSGID: 113096] 
>> [posix-handle.c:770:posix_handle_hard] 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.9
->
>>
/bricks/brick2/gv2a2/.glusterfs/c9/b7/c9b71b00-a09f-4df1-b874-041820ca8241failed
>> [File exists]
>> [2018-01-16 15:17:08.279162] W [MSGID: 113096] 
>> [posix-handle.c:770:posix_handle_hard] 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.9
->
>>
/bricks/brick2/gv2a2/.glusterfs/c9/b7/c9b71b00-a09f-4df1-b874-041820ca8241failed
>> [File exists]
>> The message "W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
>> 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.9
->
>>
/bricks/brick2/gv2a2/.glusterfs/c9/b7/c9b71b00-a09f-4df1-b874-041820ca8241failed
>> [File exists]" repeated 2 times between [2018-01-16
15:17:08.279162]
>> and [2018-01-16 15:17:08.279162]
>>
>> [2018-01-16 15:17:08.279177] E [MSGID: 113020] 
>> [posix.c:1485:posix_mknod] 0-gv2a2-posix: setting gfid on 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.9
failed
>> The message "W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
>> 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.4
->
>>
/bricks/brick2/gv2a2/.glusterfs/a0/14/a0144df3-8d89-4aed-872e-5fef141e9e1efailed
>> [File exists]" repeated 6 times between [2018-01-16
15:16:41.471745]
>> and [2018-01-16 15:16:41.471807]
>> The message "W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
>> 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.5
->
>>
/bricks/brick2/gv2a2/.glusterfs/eb/04/eb044e6e-3a23-40a4-9ce1-f13af148eb67failed
>> [File exists]" repeated 2 times between [2018-01-16
15:16:42.593392]
>> and [2018-01-16 15:16:42.593430]
>> [2018-01-16 15:17:32.229689] W [MSGID: 113096] 
>> [posix-handle.c:770:posix_handle_hard] 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.14 
>> -> 
>>
/bricks/brick2/gv2a2/.glusterfs/53/04/530449fa-d698-4928-a262-9a0234232323failed
>> [File exists]
>> [2018-01-16 15:17:32.229720] E [MSGID: 113020] 
>> [posix.c:1485:posix_mknod] 0-gv2a2-posix: setting gfid on 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.14 
>> failed
>> [2018-01-16 15:18:07.154330] W [MSGID: 113096] 
>> [posix-handle.c:770:posix_handle_hard] 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.17 
>> -> 
>>
/bricks/brick2/gv2a2/.glusterfs/81/96/8196dd19-84bc-4c3d-909f-8792e9b4929dfailed
>> [File exists]
>> [2018-01-16 15:18:07.154375] E [MSGID: 113020] 
>> [posix.c:1485:posix_mknod] 0-gv2a2-posix: setting gfid on 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.17 
>> failed
>> The message "W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
>> 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.14 
>> -> 
>>
/bricks/brick2/gv2a2/.glusterfs/53/04/530449fa-d698-4928-a262-9a0234232323failed
>> [File exists]" repeated 7 times between [2018-01-16
15:17:32.229689]
>> and [2018-01-16 15:17:32.229806]
>> The message "W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
>> 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.17 
>> -> 
>>
/bricks/brick2/gv2a2/.glusterfs/81/96/8196dd19-84bc-4c3d-909f-8792e9b4929dfailed
>> [File exists]" repeated 3 times between [2018-01-16
15:18:07.154330]
>> and [2018-01-16 15:18:07.154357]
>> [2018-01-16 15:19:23.618794] W [MSGID: 113096] 
>> [posix-handle.c:770:posix_handle_hard] 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.21 
>> -> 
>>
/bricks/brick2/gv2a2/.glusterfs/6d/02/6d02bd98-83de-43e8-a7af-b1d5f5160403failed
>> [File exists]
>> [2018-01-16 15:19:23.618827] E [MSGID: 113020] 
>> [posix.c:1485:posix_mknod] 0-gv2a2-posix: setting gfid on 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.21 
>> failed
>> The message "W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
>> 0-gv2a2-posix: link 
>> /bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.21 
>> -> 
>>
/bricks/brick2/gv2a2/.glusterfs/6d/02/6d02bd98-83de-43e8-a7af-b1d5f5160403failed
>> [File exists]" repeated 3 times between [2018-01-16
15:19:23.618794]
>> and [2018-01-16 15:19:23.618794]
>>
>> Thank you,
>>
>>
>> Il 16/01/2018 11:40, Krutika Dhananjay ha scritto:
>>> Also to help isolate the component, could you answer these:
>>>
>>> 1. on a different volume with shard not enabled, do you see this
issue?
>>> 2. on a plain 3-way replicated volume (no arbiter), do you see this
>>> issue?
>>>
>>>
>>>
>>> On Tue, Jan 16, 2018 at 4:03 PM, Krutika Dhananjay 
>>> <kdhananj at redhat.com <mailto:kdhananj at
redhat.com>> wrote:
>>>
>>>     Please share the volume-info output and the logs under
>>>     /var/log/glusterfs/ from all your nodes. for investigating the
>>>     issue.
>>>
>>>     -Krutika
>>>
>>>     On Tue, Jan 16, 2018 at 1:30 PM, Ing. Luca Lazzeroni - Trend
>>>     Servizi Srl <luca at gvnet.it <mailto:luca at
gvnet.it>> wrote:
>>>
>>>         Hi to everyone.
>>>
>>>         I've got a strange problem with a gluster setup: 3
nodes
>>>         with Centos 7.4, Gluster 3.12.4 from Centos/Gluster
>>>         repositories, QEMU-KVM version 2.9.0 (compiled from RHEL
>>>         sources).
>>>
>>>         I'm running volumes in replica 3 arbiter 1 mode (but
I've
>>>         got a volume in "pure" replica 3 mode too).
I've applied the
>>>         "virt" group settings to my volumes since they
host VM images.
>>>
>>>         If I try to install something (eg: Ubuntu Server 16.04.3)
on
>>>         a VM (and so I generate a bit of I/O inside it) and
>>>         configure KVM to access gluster volume directly (via
>>>         libvirt), install fails after a while because the disk
>>>         content is corrupted. If I inspect the block inside the
disk
>>>         (by accessing the image directly from outside) I can found
>>>         many files filled with "^@".
>>>
>>>
>>> Also, what exactly do you mean by accessing the image directly from
>>> outside? Was it from the brick directories directly? Was it from
the
>>> mount point of the volume? Could you elaborate? Which files exactly
>>> did you check?
>>>
>>> -Krutika
>>>
>>>
>>>         If, instead, I configure KVM to access VM images via a FUSE
>>>         mount, everything seems to work correctly.
>>>
>>>         Note that the problem with install is verified 100% time
>>>         with QCOW2 image, while it appears only after with RAW disk
>>>         images.
>>>
>>>         Is there anyone who experienced the same problem ?
>>>
>>>         Thank you,
>>>
>>>
>>>         -- 
>>>         Ing. Luca Lazzeroni
>>>         Responsabile Ricerca e Sviluppo
>>>         Trend Servizi Srl
>>>         Tel: 0376/631761
>>>         Web: https://www.trendservizi.it
>>>
>>>         _______________________________________________
>>>         Gluster-users mailing list
>>>         Gluster-users at gluster.org <mailto:Gluster-users at
gluster.org>
>>>         http://lists.gluster.org/mailman/listinfo/gluster-users
>>>        
<http://lists.gluster.org/mailman/listinfo/gluster-users>
>>>
>>>
>>>
>>
>> -- 
>> Ing. Luca Lazzeroni
>> Responsabile Ricerca e Sviluppo
>> Trend Servizi Srl
>> Tel: 0376/631761
>> Web:https://www.trendservizi.it
>>
>>
>> _______________________________________________
>> Gluster-users mailing list
>> Gluster-users at gluster.org
>> http://lists.gluster.org/mailman/listinfo/gluster-users
>
> -- 
> Ing. Luca Lazzeroni
> Responsabile Ricerca e Sviluppo
> Trend Servizi Srl
> Tel: 0376/631761
> Web:https://www.trendservizi.it
>
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://lists.gluster.org/mailman/listinfo/gluster-users
-- 
Ing. Luca Lazzeroni
Responsabile Ricerca e Sviluppo
Trend Servizi Srl
Tel: 0376/631761
Web: https://www.trendservizi.it

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Krutika Dhananjay

2018-Jan-17 10:00 UTC

head link

[Gluster-users] [Possibile SPAM] Re: Problem with Gluster 3.12.4, VM and sharding

On Tue, Jan 16, 2018 at 10:47 PM, Ing. Luca Lazzeroni - Trend Servizi Srl <
luca at gvnet.it> wrote:
> I've made the test with raw image format (preallocated too) and the
> corruption problem is still there (but without errors in bricks' log
file).
>
> What does the "link" error in bricks log files means ?
>
> I've seen the source code looking for the lines where it happens and it
> seems a warning (it doesn't imply a failure).
>
Indeed, it only represents a transient state when the shards are created
for the first time and does not indicate a failure.
Could you also get the logs of the gluster fuse mount process? It should be
under /var/log/glusterfs of your client machine with the filename as a
hyphenated mount point path.

For example, if your volume was mounted at /mnt/glusterfs, then your log
file would be named mnt-glusterfs.log.

-Krutika

>
> Il 16/01/2018 17:39, Ing. Luca Lazzeroni - Trend Servizi Srl ha scritto:
>
> An update:
>
> I've tried, for my tests, to create the vm volume as
>
> qemu-img create -f qcow2 -o preallocation=full
> gluster://gluster1/Test/Test-vda.img 20G
>
> et voila !
>
> No errors at all, neither in bricks' log file (the "link
failed" message
> disappeared), neither in VM (no corruption and installed succesfully).
>
> I'll do another test with a fully preallocated raw image.
>
>
>
> Il 16/01/2018 16:31, Ing. Luca Lazzeroni - Trend Servizi Srl ha scritto:
>
> I've just done all the steps to reproduce the problem.
>
> Tha VM volume has been created via "qemu-img create -f qcow2
> Test-vda2.qcow2 20G" on the gluster volume mounted via FUSE. I've
tried
> also to create the volume with preallocated metadata, which moves the
> problem a bit far away (in time). The volume is a replice 3 arbiter 1
> volume hosted on XFS bricks.
>
> Here are the informations:
>
> [root at ovh-ov1 bricks]# gluster volume info gv2a2
>
> Volume Name: gv2a2
> Type: Replicate
> Volume ID: 83c84774-2068-4bfc-b0b9-3e6b93705b9f
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 1 x (2 + 1) = 3
> Transport-type: tcp
> Bricks:
> Brick1: gluster1:/bricks/brick2/gv2a2
> Brick2: gluster3:/bricks/brick3/gv2a2
> Brick3: gluster2:/bricks/arbiter_brick_gv2a2/gv2a2 (arbiter)
> Options Reconfigured:
> storage.owner-gid: 107
> storage.owner-uid: 107
> user.cifs: off
> features.shard: on
> cluster.shd-wait-qlength: 10000
> cluster.shd-max-threads: 8
> cluster.locking-scheme: granular
> cluster.data-self-heal-algorithm: full
> cluster.server-quorum-type: server
> cluster.quorum-type: auto
> cluster.eager-lock: enable
> network.remote-dio: enable
> performance.low-prio-threads: 32
> performance.io-cache: off
> performance.read-ahead: off
> performance.quick-read: off
> transport.address-family: inet
> nfs.disable: off
> performance.client-io-threads: off
>
> /var/log/glusterfs/glusterd.log:
>
> [2018-01-15 14:17:50.196228] I [MSGID: 106488] [glusterd-handler.c:1548:__
> glusterd_handle_cli_get_volume] 0-management: Received get vol req
> [2018-01-15 14:25:09.555214] I [MSGID: 106488] [glusterd-handler.c:1548:__
> glusterd_handle_cli_get_volume] 0-management: Received get vol req
>
> (empty because today it's 2018-01-16)
>
> /var/log/glusterfs/glustershd.log:
>
> [2018-01-14 02:23:02.731245] I [glusterfsd-mgmt.c:1821:mgmt_getspec_cbk]
> 0-glusterfs: No change in volfile,continuing
>
> (empty too)
>
> /var/log/glusterfs/bricks/brick-brick2-gv2a2.log (the interested volume):
>
> [2018-01-16 15:14:37.809965] I [MSGID: 115029]
[server-handshake.c:793:server_setvolume]
> 0-gv2a2-server: accepted client from ovh-ov1-10302-2018/01/16-15:
> 14:37:790306-gv2a2-client-0-0-0 (version: 3.12.4)
> [2018-01-16 15:16:41.471751] E [MSGID: 113020] [posix.c:1485:posix_mknod]
> 0-gv2a2-posix: setting gfid on /bricks/brick2/gv2a2/.shard/
> 62335cb9-c7b5-4735-a879-59cff93fe622.4 failed
> [2018-01-16 15:16:41.471745] W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.4
> -> 
/bricks/brick2/gv2a2/.glusterfs/a0/14/a0144df3-8d89-4aed-872e-5fef141e9e1efailed
> [File exists]
> [2018-01-16 15:16:42.593392] W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.5
> ->
/bricks/brick2/gv2a2/.glusterfs/eb/04/eb044e6e-3a23-40a4-9ce1-f13af148eb67failed
> [File exists]
> [2018-01-16 15:16:42.593426] E [MSGID: 113020] [posix.c:1485:posix_mknod]
> 0-gv2a2-posix: setting gfid on /bricks/brick2/gv2a2/.shard/
> 62335cb9-c7b5-4735-a879-59cff93fe622.5 failed
> [2018-01-16 15:17:04.129593] W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.8
> ->
/bricks/brick2/gv2a2/.glusterfs/dc/92/dc92bd0a-0d46-4826-a4c9-d073a924dd8dfailed
> [File exists]
> The message "W [MSGID: 113096] [posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.8
> ->
/bricks/brick2/gv2a2/.glusterfs/dc/92/dc92bd0a-0d46-4826-a4c9-d073a924dd8dfailed
> [File exists]" repeated 5 times between [2018-01-16 15:17:04.129593]
and
> [2018-01-16 15:17:04.129593]
> [2018-01-16 15:17:04.129661] E [MSGID: 113020] [posix.c:1485:posix_mknod]
> 0-gv2a2-posix: setting gfid on /bricks/brick2/gv2a2/.shard/
> 62335cb9-c7b5-4735-a879-59cff93fe622.8 failed
> [2018-01-16 15:17:08.279162] W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.9
> ->
/bricks/brick2/gv2a2/.glusterfs/c9/b7/c9b71b00-a09f-4df1-b874-041820ca8241failed
> [File exists]
> [2018-01-16 15:17:08.279162] W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.9
> ->
/bricks/brick2/gv2a2/.glusterfs/c9/b7/c9b71b00-a09f-4df1-b874-041820ca8241failed
> [File exists]
> The message "W [MSGID: 113096] [posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.9
> ->
/bricks/brick2/gv2a2/.glusterfs/c9/b7/c9b71b00-a09f-4df1-b874-041820ca8241failed
> [File exists]" repeated 2 times between [2018-01-16 15:17:08.279162]
and
> [2018-01-16 15:17:08.279162]
>
> [2018-01-16 15:17:08.279177] E [MSGID: 113020] [posix.c:1485:posix_mknod]
> 0-gv2a2-posix: setting gfid on /bricks/brick2/gv2a2/.shard/
> 62335cb9-c7b5-4735-a879-59cff93fe622.9 failed
> The message "W [MSGID: 113096] [posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.4
> ->
/bricks/brick2/gv2a2/.glusterfs/a0/14/a0144df3-8d89-4aed-872e-5fef141e9e1efailed
> [File exists]" repeated 6 times between [2018-01-16 15:16:41.471745]
and
> [2018-01-16 15:16:41.471807]
> The message "W [MSGID: 113096] [posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.5
> ->
/bricks/brick2/gv2a2/.glusterfs/eb/04/eb044e6e-3a23-40a4-9ce1-f13af148eb67failed
> [File exists]" repeated 2 times between [2018-01-16 15:16:42.593392]
and
> [2018-01-16 15:16:42.593430]
> [2018-01-16 15:17:32.229689] W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.14
> ->
/bricks/brick2/gv2a2/.glusterfs/53/04/530449fa-d698-4928-a262-9a0234232323failed
> [File exists]
> [2018-01-16 15:17:32.229720] E [MSGID: 113020] [posix.c:1485:posix_mknod]
> 0-gv2a2-posix: setting gfid on /bricks/brick2/gv2a2/.shard/
> 62335cb9-c7b5-4735-a879-59cff93fe622.14 failed
> [2018-01-16 15:18:07.154330] W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.17
> ->
/bricks/brick2/gv2a2/.glusterfs/81/96/8196dd19-84bc-4c3d-909f-8792e9b4929dfailed
> [File exists]
> [2018-01-16 15:18:07.154375] E [MSGID: 113020] [posix.c:1485:posix_mknod]
> 0-gv2a2-posix: setting gfid on /bricks/brick2/gv2a2/.shard/
> 62335cb9-c7b5-4735-a879-59cff93fe622.17 failed
> The message "W [MSGID: 113096] [posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.14
> ->
/bricks/brick2/gv2a2/.glusterfs/53/04/530449fa-d698-4928-a262-9a0234232323failed
> [File exists]" repeated 7 times between [2018-01-16 15:17:32.229689]
and
> [2018-01-16 15:17:32.229806]
> The message "W [MSGID: 113096] [posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.17
> ->
/bricks/brick2/gv2a2/.glusterfs/81/96/8196dd19-84bc-4c3d-909f-8792e9b4929dfailed
> [File exists]" repeated 3 times between [2018-01-16 15:18:07.154330]
and
> [2018-01-16 15:18:07.154357]
> [2018-01-16 15:19:23.618794] W [MSGID: 113096]
[posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.21
> ->
/bricks/brick2/gv2a2/.glusterfs/6d/02/6d02bd98-83de-43e8-a7af-b1d5f5160403failed
> [File exists]
> [2018-01-16 15:19:23.618827] E [MSGID: 113020] [posix.c:1485:posix_mknod]
> 0-gv2a2-posix: setting gfid on /bricks/brick2/gv2a2/.shard/
> 62335cb9-c7b5-4735-a879-59cff93fe622.21 failed
> The message "W [MSGID: 113096] [posix-handle.c:770:posix_handle_hard]
> 0-gv2a2-posix: link
/bricks/brick2/gv2a2/.shard/62335cb9-c7b5-4735-a879-59cff93fe622.21
> ->
/bricks/brick2/gv2a2/.glusterfs/6d/02/6d02bd98-83de-43e8-a7af-b1d5f5160403failed
> [File exists]" repeated 3 times between [2018-01-16 15:19:23.618794]
and
> [2018-01-16 15:19:23.618794]
>
> Thank you,
>
> Il 16/01/2018 11:40, Krutika Dhananjay ha scritto:
>
> Also to help isolate the component, could you answer these:
>
> 1. on a different volume with shard not enabled, do you see this issue?
> 2. on a plain 3-way replicated volume (no arbiter), do you see this issue?
>
>
>
> On Tue, Jan 16, 2018 at 4:03 PM, Krutika Dhananjay <kdhananj at
redhat.com>
> wrote:
>
>> Please share the volume-info output and the logs under
>> /var/log/glusterfs/ from all your nodes. for investigating the issue.
>>
>> -Krutika
>>
>> On Tue, Jan 16, 2018 at 1:30 PM, Ing. Luca Lazzeroni - Trend Servizi
Srl
>> <luca at gvnet.it> wrote:
>>
>>> Hi to everyone.
>>>
>>> I've got a strange problem with a gluster setup: 3 nodes with
Centos
>>> 7.4, Gluster 3.12.4 from Centos/Gluster repositories, QEMU-KVM
version
>>> 2.9.0 (compiled from RHEL sources).
>>>
>>> I'm running volumes in replica 3 arbiter 1 mode (but I've
got a volume
>>> in "pure" replica 3 mode too). I've applied the
"virt" group settings to my
>>> volumes since they host VM images.
>>>
>>> If I try to install something (eg: Ubuntu Server 16.04.3) on a VM
(and
>>> so I generate a bit of I/O inside it) and configure KVM to access
gluster
>>> volume directly (via libvirt), install fails after a while because
the disk
>>> content is corrupted. If I inspect the block inside the disk (by
accessing
>>> the image directly from outside) I can found many files filled with
"^@".
>>>
>>
> Also, what exactly do you mean by accessing the image directly from
> outside? Was it from the brick directories directly? Was it from the mount
> point of the volume? Could you elaborate? Which files exactly did you
check?
>
> -Krutika
>
>
>>> If, instead, I configure KVM to access VM images via a FUSE mount,
>>> everything seems to work correctly.
>>>
>>> Note that the problem with install is verified 100% time with QCOW2
>>> image, while it appears only after with RAW disk images.
>>>
>>> Is there anyone who experienced the same problem ?
>>>
>>> Thank you,
>>>
>>>
>>> --
>>> Ing. Luca Lazzeroni
>>> Responsabile Ricerca e Sviluppo
>>> Trend Servizi Srl
>>> Tel: 0376/631761
>>> Web: https://www.trendservizi.it
>>>
>>> _______________________________________________
>>> Gluster-users mailing list
>>> Gluster-users at gluster.org
>>> http://lists.gluster.org/mailman/listinfo/gluster-users
>>>
>>
>>
>
> --
> Ing. Luca Lazzeroni
> Responsabile Ricerca e Sviluppo
> Trend Servizi Srl
> Tel: 0376/631761
> Web: https://www.trendservizi.it
>
>
>
> _______________________________________________
> Gluster-users mailing listGluster-users at
gluster.orghttp://lists.gluster.org/mailman/listinfo/gluster-users
>
>
> --
> Ing. Luca Lazzeroni
> Responsabile Ricerca e Sviluppo
> Trend Servizi Srl
> Tel: 0376/631761
> Web: https://www.trendservizi.it
>
>
>
> _______________________________________________
> Gluster-users mailing listGluster-users at
gluster.orghttp://lists.gluster.org/mailman/listinfo/gluster-users
>
>
> --
> Ing. Luca Lazzeroni
> Responsabile Ricerca e Sviluppo
> Trend Servizi Srl
> Tel: 0376/631761
> Web: https://www.trendservizi.it
>
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://lists.gluster.org/mailman/listinfo/gluster-users
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