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

[Ilya Ivanov]

Any insight?

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.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://supercolony.gluster.org/pipermail/gluster-users/attachments/20140910/0ee8c916/attachment.html>