[Gluster-users] How to clear split brain info

[Ravishankar N]

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On 09/21/2015 03:48 PM, Davy Croonen wrote:
> Hmmm, strange, I went through all my bricks with every time the same result:
>
> -bash: cd: /mnt/public/brick1/.glusterfs/31/38/3138d605-25ec-4aa9-9069-5db2e4202db4: No such file or directory
>
> The directory /mnt/public/brick1/.glusterfs/31/38 does exist, and indeed there’s a symlink in there but not one with the referenced gfid.

That is strange..Does the same string ( 
"<gfid:3138d605-25ec-4aa9-9069-5db2e4202db4>/Doc1_LOUJA.htm - Is in 
split-brain.") appear on both bricks of the replica (assuming replica 2) 
when you run the heal info command?

> Any further suggestions? If I can get rid of the message it’s ok.
You could stat all the files on the mount (find /<mount-point> |xargs 
stat > /dev/null) and then run the heal info command again and see if 
you now get the absolute path instead of the gfid string.

>
> Thanks in advance.
>
> Kind regards
> Davy
>
>> On 21 Sep 2015, at 11:59, Ravishankar N <ravishankar at redhat.com> wrote:
>>
>>
>>
>> On 09/21/2015 03:09 PM, Davy Croonen wrote:
>>> Ravi
>>>
>>> Thanks for your quick reply.
>>>
>>> I didn’t solve the split-brain on the file because I don’t know to which directory this gfid is referencing (due to the implementation of our application we have multiple directories containing the same files).
>> <gfid:3138d605-25ec-4aa9-9069-5db2e4202db4>/Doc1_LOUJA.htm - Is in split-brain.
>>
>> Directories are symlinked inside the .glusterfs folder on the bricks. You can `cd /mnt/public/brick1/.glusterfs/31/38/3138d605-25ec-4aa9-9069-5db2e4202db4` and get to the file 'Doc1_LOUJA.htm' and then resolve the split-brain.
>>
>> HTH,
>> Ravi
>>> Running the command “getfattr -m . -d -e hex <directory>” against every directory which could be the one didn’t show up the mentioned gfid. But there was one result that didn’t fit the picture, see results below:
>>>
>>> root at gfs01a-dcg:/mnt/public/brick1/provil/Timetable# getfattr -m . -d -e hex h9cnBmEx6j26sgidVKLaZhAqh
>>> # file: h9cnBmEx6j26sgidVKLaZhAqh
>>> trusted.afr.dirty=0x000000000000000000000000
>>> trusted.afr.public-client-0=0x000000000000000000000000
>>> trusted.afr.public-client-1=0x000000000000000000000000
>>> trusted.gfid=0xb560c2463f5b476fa95d318f6bb91356
>>> trusted.glusterfs.dht=0x00000001000000007ffe51f8ffffffff
>>>
>>> root at gfs01a-dcg:/mnt/public/brick1/provil/Timetable# getfattr -m . -d -e hex h9cnBmEx6j26sgidVKLaZhAqh1442579382189160
>>> # file: h9cnBmEx6j26sgidVKLaZhAqh1442579382189160
>>> trusted.afr.dirty=0x000000000000000000000000
>>> trusted.afr.public-client-0=0x000000000000000000000000
>>> trusted.afr.public-client-1=0x000000000000000000000000
>>> trusted.gfid=0x0367b477d5ea4b62b4da174b33622457
>>>
>>> On the other hand there is also the possibility that the directory doesn’t even exist anymore because every night there are running some cleanup scripts.
>>>
>>> By the way we are running gluster version 3.6.4.
>>>
>>> Davy
>>>
>>>> On 21 Sep 2015, at 11:16, Ravishankar N <ravishankar at redhat.com> wrote:
>>>>
>>>>
>>>>
>>>> On 09/21/2015 02:32 PM, Davy Croonen wrote:
>>>>> Hi all
>>>>>
>>>>> For, at the moment a unknown reason, the command "gluster volume heal public info” shows a lot of the following entries:
>>>>>
>>>>> <gfid:3138d605-25ec-4aa9-9069-5db2e4202db4>/Doc1_LOUJA.htm - Is in split-brain.
>>>>>
>>>>> The part after the / differs but the gfid is always the same, I suppose this gfid is referring to a directory.
>>>> Correct, it is the parent directory of the file in question.
>>>>>   Now considering the data this isn’t an issue the files can be or are already deleted, but is there a way to clear these split-brain entries?
>>>> Did you actually resolve the split-brain on the file ? If you do that, then the entry must disappear from the output of the heal info command.
>>>>> The command for restarting the self heal daemon “gluster v start public force”, didn’t solve the problem. Any other suggestions?
>>>> What version of gluster are you running?
>>>>
>>>> -Ravi
>>>>> Thanks in advance.
>>>>>
>>>>>
>>>>> Kind regards
>>>>> Davy
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>>>>> Gluster-users at gluster.org
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