[Gluster-users] Split brain that is not split brain

[Pranith Kumar Karampuri]

On 09/11/2014 12:16 AM, Ilya Ivanov wrote:
> Any insight?
Was the other file's gfid d3def9e1-c6d0-4b7d-a322-b5019305182e?
Could you check if this file exists in <brick>/.glusterfs/d3/de/
When a file is deleted this file also needs to be deleted if there are 
no more hardlinks to the file

Pranith
>
> On Tue, Sep 9, 2014 at 8:35 AM, Ilya Ivanov <bearwere at gmail.com 
> <mailto:bearwere at gmail.com>> wrote:
>
>     What's a gfid split-brain and how is it different from "normal"
>     split-brain?
>
>     I accessed the file with stat, but "heal info" still shows "Number
>     of entries: 1"
>
>     [root at gluster1 gluster]# getfattr -d -m. -e hex gv01/123
>     # getfattr -d -m. -e hex gv01/123
>     # file: gv01/123
>     trusted.afr.gv01-client-0=0x000000000000000000000000
>     trusted.afr.gv01-client-1=0x000000000000000000000000
>     trusted.gfid=0x35f86f4561134ba0bd1b94ef70179d4d
>
>     [root at gluster1 gluster]# getfattr -d -m. -e hex gv01
>     # file: gv01
>     trusted.afr.gv01-client-0=0x000000000000000000000000
>     trusted.afr.gv01-client-1=0x000000000000000000000000
>     trusted.gfid=0x00000000000000000000000000000001
>     trusted.glusterfs.dht=0x000000010000000000000000ffffffff
>     trusted.glusterfs.volume-id=0x31a2c4c486ca4344b838d2c2e6c716c1
>
>
>
>     On Tue, Sep 9, 2014 at 8:19 AM, Pranith Kumar Karampuri
>     <pkarampu at redhat.com <mailto:pkarampu at redhat.com>> wrote:
>
>
>         On 09/09/2014 11:35 AM, Ilya Ivanov wrote:
>>         Ahh, thank you, now I get it. I deleted it on one node and it
>>         replicated to another one. Now I get the following output:
>>
>>         [root at gluster1 var]# gluster volume heal gv01 info
>>         Brick gluster1:/home/gluster/gv01/
>>         <gfid:d3def9e1-c6d0-4b7d-a322-b5019305182e>
>>         Number of entries: 1
>>
>>         Brick gluster2:/home/gluster/gv01/
>>         Number of entries: 0
>>
>>         Is it normal? Why the number of entries isn't reset to 0?
>         If you access the file using ls/stat etc, it will be fixed.
>         But before that could you please post the output of 'getfattr
>         -d -m. -e hex file/path/in/backend/brick' and 'getfattr -d -m.
>         -e hex parent/dir/to/file/path/in/backend/brick'
>
>         Pranith
>>
>>
>>         And why wouldn't the file show up in split-brain before, anyway?
>         Gfid split-brains are not shown in heal-info-split-brain yet.
>
>         Pranith
>>
>>
>>         On Tue, Sep 9, 2014 at 7:46 AM, Pranith Kumar Karampuri
>>         <pkarampu at redhat.com <mailto:pkarampu at redhat.com>> wrote:
>>
>>
>>             On 09/09/2014 01:54 AM, Ilya Ivanov wrote:
>>>             Hello.
>>>
>>>             I've Gluster 3.5.2 on Centos 6. A primitive replicated
>>>             volume, as describe here
>>>             <https://www.digitalocean.com/community/tutorials/how-to-create-a-redundant-storage-pool-using-glusterfs-on-ubuntu-servers>.
>>>             I tried to simulate split-brain by temporarily
>>>             disconnecting the nodes and creating a file with the
>>>             same name and different contents. That worked.
>>>
>>>             The question is, how do I fix it now? All the tutorials
>>>             suggest deleting the file from one of the nodes. I can't
>>>             do that, it reports "Input/output error". The file won't
>>>             even show up in "gluster volume heal gv00 info
>>>             split-brain". That shows 0 entries.
>>             The deletion needs to happen on one of the bricks, not
>>             from the mount point.
>>
>>             Pranith
>>>             I can see the file in "gluster volume heal gv00 info
>>>             heal-failed", though.
>>>
>>>
>>>             -- 
>>>             Ilya.
>>>
>>>
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>>>             Gluster-users mailing list
>>>             Gluster-users at gluster.org  <mailto:Gluster-users at gluster.org>
>>>             http://supercolony.gluster.org/mailman/listinfo/gluster-users
>>
>>
>>
>>
>>         -- 
>>         Ilya.
>
>
>
>
>     -- 
>     Ilya.
>
>
>
>
> -- 
> Ilya.

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