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

[Ilya Ivanov]

Right... I deleted it and now all appears to be fine.

Still, could you please elaborate on "gfid split-brain"?


On Thu, Sep 11, 2014 at 5:32 AM, Pranith Kumar Karampuri <
pkarampu at redhat.com> wrote:

>
> 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> 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> 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> 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.
>>>>
>>>>
>>>>  _______________________________________________
>>>> Gluster-users mailing listGluster-users at gluster.orghttp://supercolony.gluster.org/mailman/listinfo/gluster-users
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Ilya.
>>>
>>>
>>>
>>
>>
>>  --
>> Ilya.
>>
>
>
>
> --
> Ilya.
>
>
>


-- 
Ilya.
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