[Gluster-users] self-heal not working

mabi
2017-08-22T14:10:53Z

Yes, I have indeed a small test cluster with 3 Raspberry Pis but unfortunately I
have other issues with that one.

So I tried the "volume start force" which restarted glustershd on
every nodes but nothing changed and running the heal does not do anything, there
is still that one single file to be healed.

Finally I would like to use your last suggestion to increase client-log-level to
DEBUG. In order to do that would the following command be correct?

gluster volume set myvolume diagnostics.client-log-level DEBUG

> -------- Original Message --------
> Subject: Re: [Gluster-users] self-heal not working
> Local Time: August 22, 2017 11:51 AM
> UTC Time: August 22, 2017 9:51 AM
> From: ravishankar at redhat.com
> To: mabi <mabi at protonmail.ch>
> Ben Turner <bturner at redhat.com>, Gluster Users <gluster-users
at gluster.org>
>
> On 08/22/2017 02:30 PM, mabi wrote:
>
>> Thanks for the additional hints, I have the following 2 questions
first:
>>
>> - In order to launch the index heal is the following command correct:
>> gluster volume heal myvolume
>
> Yes
>
>> - If I run a "volume start force" will it have any short
disruptions on my clients which mount the volume through FUSE? If yes, how long?
This is a production system that's why I am asking.
>
> No. You can actually create a test volume on  your personal linux box to
try these kinds of things without needing multiple machines. This is how we
develop and test our patches :)
> 'gluster volume create testvol replica 3 /home/mabi/bricks/brick{1..3}
force` and so on.
>
> HTH,
> Ravi
>
>>> -------- Original Message --------
>>> Subject: Re: [Gluster-users] self-heal not working
>>> Local Time: August 22, 2017 6:26 AM
>>> UTC Time: August 22, 2017 4:26 AM
>>> From: ravishankar at redhat.com
>>> To: mabi [<mabi at protonmail.ch>](mailto:mabi at
protonmail.ch), Ben Turner [<bturner at redhat.com>](mailto:bturner at
redhat.com)
>>> Gluster Users [<gluster-users at
gluster.org>](mailto:gluster-users at gluster.org)
>>>
>>> Explore the following:
>>>
>>> - Launch index heal and look at the glustershd logs of all bricks
for possible errors
>>>
>>> - See if the glustershd in each node is connected to all bricks.
>>>
>>> - If not try to restart shd by `volume start force`
>>>
>>> - Launch index heal again and try.
>>>
>>> - Try debugging the shd log by setting client-log-level to DEBUG
temporarily.
>>>
>>> On 08/22/2017 03:19 AM, mabi wrote:
>>>
>>>> Sure, it doesn't look like a split brain based on the
output:
>>>>
>>>> Brick node1.domain.tld:/data/myvolume/brick
>>>> Status: Connected
>>>> Number of entries in split-brain: 0
>>>>
>>>> Brick node2.domain.tld:/data/myvolume/brick
>>>> Status: Connected
>>>> Number of entries in split-brain: 0
>>>>
>>>> Brick node3.domain.tld:/srv/glusterfs/myvolume/brick
>>>> Status: Connected
>>>> Number of entries in split-brain: 0
>>>>
>>>>> -------- Original Message --------
>>>>> Subject: Re: [Gluster-users] self-heal not working
>>>>> Local Time: August 21, 2017 11:35 PM
>>>>> UTC Time: August 21, 2017 9:35 PM
>>>>> From: bturner at redhat.com
>>>>> To: mabi [<mabi at protonmail.ch>](mailto:mabi at
protonmail.ch)
>>>>> Gluster Users [<gluster-users at
gluster.org>](mailto:gluster-users at gluster.org)
>>>>>
>>>>> Can you also provide:
>>>>>
>>>>> gluster v heal <my vol> info split-brain
>>>>>
>>>>> If it is split brain just delete the incorrect file from
the brick and run heal again. I haven"t tried this with arbiter but I
assume the process is the same.
>>>>>
>>>>> -b
>>>>>
>>>>> ----- Original Message -----
>>>>>> From: "mabi" [<mabi at
protonmail.ch>](mailto:mabi at protonmail.ch)
>>>>>> To: "Ben Turner" [<bturner at
redhat.com>](mailto:bturner at redhat.com)
>>>>>> Cc: "Gluster Users" [<gluster-users at
gluster.org>](mailto:gluster-users at gluster.org)
>>>>>> Sent: Monday, August 21, 2017 4:55:59 PM
>>>>>> Subject: Re: [Gluster-users] self-heal not working
>>>>>>
>>>>>> Hi Ben,
>>>>>>
>>>>>> So it is really a 0 kBytes file everywhere (all nodes
including the arbiter
>>>>>> and from the client).
>>>>>> Here below you will find the output you requested.
Hopefully that will help
>>>>>> to find out why this specific file is not healing...
Let me know if you need
>>>>>> any more information. Btw node3 is my arbiter node.
>>>>>>
>>>>>> NODE1:
>>>>>>
>>>>>> STAT:
>>>>>> File:
>>>>>>
?/data/myvolume/brick/data/appdata_ocpom4nckwru/preview/1344699/64-64-crop.png?
>>>>>> Size: 0 Blocks: 38 IO Block: 131072 regular empty file
>>>>>> Device: 24h/36d Inode: 10033884 Links: 2
>>>>>> Access: (0644/-rw-r--r--) Uid: ( 33/www-data) Gid: (
33/www-data)
>>>>>> Access: 2017-08-14 17:04:55.530681000 +0200
>>>>>> Modify: 2017-08-14 17:11:46.407404779 +0200
>>>>>> Change: 2017-08-14 17:11:46.407404779 +0200
>>>>>> Birth: -
>>>>>>
>>>>>> GETFATTR:
>>>>>> trusted.afr.dirty=0sAAAAAQAAAAAAAAAA
>>>>>>
trusted.bit-rot.version=0sAgAAAAAAAABZhuknAAlJAg=>>>>>>
trusted.gfid=0sGYXiM9XuTj6lGs8LX58q6g=>>>>>>
trusted.glusterfs.d99af2fa-439b-4a21-bf3a-38f3849f87ec.xtime=0sWZG9sgAGOyo>>>>>>
>>>>>> NODE2:
>>>>>>
>>>>>> STAT:
>>>>>> File:
>>>>>>
?/data/myvolume/brick/data/appdata_ocpom4nckwru/preview/1344699/64-64-crop.png?
>>>>>> Size: 0 Blocks: 38 IO Block: 131072 regular empty file
>>>>>> Device: 26h/38d Inode: 10031330 Links: 2
>>>>>> Access: (0644/-rw-r--r--) Uid: ( 33/www-data) Gid: (
33/www-data)
>>>>>> Access: 2017-08-14 17:04:55.530681000 +0200
>>>>>> Modify: 2017-08-14 17:11:46.403704181 +0200
>>>>>> Change: 2017-08-14 17:11:46.403704181 +0200
>>>>>> Birth: -
>>>>>>
>>>>>> GETFATTR:
>>>>>> trusted.afr.dirty=0sAAAAAQAAAAAAAAAA
>>>>>>
trusted.bit-rot.version=0sAgAAAAAAAABZhu6wAA8Hpw=>>>>>>
trusted.gfid=0sGYXiM9XuTj6lGs8LX58q6g=>>>>>>
trusted.glusterfs.d99af2fa-439b-4a21-bf3a-38f3849f87ec.xtime=0sWZG9sgAGOVE>>>>>>
>>>>>> NODE3:
>>>>>> STAT:
>>>>>> File:
>>>>>>
/srv/glusterfs/myvolume/brick/data/appdata_ocpom4nckwru/preview/1344699/64-64-crop.png
>>>>>> Size: 0 Blocks: 0 IO Block: 4096 regular empty file
>>>>>> Device: ca11h/51729d Inode: 405208959 Links: 2
>>>>>> Access: (0644/-rw-r--r--) Uid: ( 33/www-data) Gid: (
33/www-data)
>>>>>> Access: 2017-08-14 17:04:55.530681000 +0200
>>>>>> Modify: 2017-08-14 17:04:55.530681000 +0200
>>>>>> Change: 2017-08-14 17:11:46.604380051 +0200
>>>>>> Birth: -
>>>>>>
>>>>>> GETFATTR:
>>>>>> trusted.afr.dirty=0sAAAAAQAAAAAAAAAA
>>>>>>
trusted.bit-rot.version=0sAgAAAAAAAABZe6ejAAKPAg=>>>>>>
trusted.gfid=0sGYXiM9XuTj6lGs8LX58q6g=>>>>>>
trusted.glusterfs.d99af2fa-439b-4a21-bf3a-38f3849f87ec.xtime=0sWZG9sgAGOc4>>>>>>
>>>>>> CLIENT GLUSTER MOUNT:
>>>>>> STAT:
>>>>>> File:
>>>>>>
"/mnt/myvolume/data/appdata_ocpom4nckwru/preview/1344699/64-64-crop.png"
>>>>>> Size: 0 Blocks: 0 IO Block: 131072 regular empty file
>>>>>> Device: 1eh/30d Inode: 11897049013408443114 Links: 1
>>>>>> Access: (0644/-rw-r--r--) Uid: ( 33/www-data) Gid: (
33/www-data)
>>>>>> Access: 2017-08-14 17:04:55.530681000 +0200
>>>>>> Modify: 2017-08-14 17:11:46.407404779 +0200
>>>>>> Change: 2017-08-14 17:11:46.407404779 +0200
>>>>>> Birth: -
>>>>>>
>>>>>> > -------- Original Message --------
>>>>>> > Subject: Re: [Gluster-users] self-heal not working
>>>>>> > Local Time: August 21, 2017 9:34 PM
>>>>>> > UTC Time: August 21, 2017 7:34 PM
>>>>>> > From: bturner at redhat.com
>>>>>> > To: mabi [<mabi at
protonmail.ch>](mailto:mabi at protonmail.ch)
>>>>>> > Gluster Users [<gluster-users at
gluster.org>](mailto:gluster-users at gluster.org)
>>>>>> >
>>>>>> > ----- Original Message -----
>>>>>> >> From: "mabi" [<mabi at
protonmail.ch>](mailto:mabi at protonmail.ch)
>>>>>> >> To: "Gluster Users"
[<gluster-users at gluster.org>](mailto:gluster-users at gluster.org)
>>>>>> >> Sent: Monday, August 21, 2017 9:28:24 AM
>>>>>> >> Subject: [Gluster-users] self-heal not working
>>>>>> >>
>>>>>> >> Hi,
>>>>>> >>
>>>>>> >> I have a replicat 2 with arbiter GlusterFS
3.8.11 cluster and there is
>>>>>> >> currently one file listed to be healed as you
can see below but never gets
>>>>>> >> healed by the self-heal daemon:
>>>>>> >>
>>>>>> >> Brick node1.domain.tld:/data/myvolume/brick
>>>>>> >>
/data/appdata_ocpom4nckwru/preview/1344699/64-64-crop.png
>>>>>> >> Status: Connected
>>>>>> >> Number of entries: 1
>>>>>> >>
>>>>>> >> Brick node2.domain.tld:/data/myvolume/brick
>>>>>> >>
/data/appdata_ocpom4nckwru/preview/1344699/64-64-crop.png
>>>>>> >> Status: Connected
>>>>>> >> Number of entries: 1
>>>>>> >>
>>>>>> >> Brick
node3.domain.tld:/srv/glusterfs/myvolume/brick
>>>>>> >>
/data/appdata_ocpom4nckwru/preview/1344699/64-64-crop.png
>>>>>> >> Status: Connected
>>>>>> >> Number of entries: 1
>>>>>> >>
>>>>>> >> As once recommended on this mailing list I
have mounted that glusterfs
>>>>>> >> volume
>>>>>> >> temporarily through fuse/glusterfs and ran a
"stat" on that file which is
>>>>>> >> listed above but nothing happened.
>>>>>> >>
>>>>>> >> The file itself is available on all 3
nodes/bricks but on the last node it
>>>>>> >> has a different date. By the way this file is
0 kBytes big. Is that maybe
>>>>>> >> the reason why the self-heal does not work?
>>>>>> >
>>>>>> > Is the file actually 0 bytes or is it just 0 bytes
on the arbiter(0 bytes
>>>>>> > are expected on the arbiter, it just stores
metadata)? Can you send us the
>>>>>> > output from stat on all 3 nodes:
>>>>>> >
>>>>>> > $ stat <file on back end brick>
>>>>>> > $ getfattr -d -m - <file on back end brick>
>>>>>> > $ stat <file from gluster mount>
>>>>>> >
>>>>>> > Lets see what things look like on the back end, it
should tell us why
>>>>>> > healing is failing.
>>>>>> >
>>>>>> > -b
>>>>>> >
>>>>>> >>
>>>>>> >> And how can I now make this file to heal?
>>>>>> >>
>>>>>> >> Thanks,
>>>>>> >> Mabi
>>>>>> >>
>>>>>> >>
>>>>>> >>
>>>>>> >>
>>>>>> >>
_______________________________________________
>>>>>> >> Gluster-users mailing list
>>>>>> >> Gluster-users at gluster.org
>>>>>> >>
http://lists.gluster.org/mailman/listinfo/gluster-users
>>>>
>>>> _______________________________________________
>>>> Gluster-users mailing list
>>>> Gluster-users at gluster.org
>>>>
>>>> http://lists.gluster.org/mailman/listinfo/gluster-users
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