[Gluster-users] Interesting split-brain...

[Ludwig Gamache]

I am new to gluster but already like it. I did a maintenance last week
where I shutdown both nodes (one after each others). I had many files that
needed to be healed after that. Everything worked well, except for 1 file.
It is in split-brain, with 2 different GFID. I read the documentation but
it only covers the cases where the GFID is the same on both bricks. BTW, I
am running Gluster 3.10.

Here are some details...

[root at NAS-01 .glusterfs]# gluster volume heal data01 info

Brick 192.168.186.11:/mnt/DATA/data

/abc/.zsh_history

/abc - Is in split-brain


Status: Connected

Number of entries: 2


Brick 192.168.186.12:/mnt/DATA/data

/abc - Is in split-brain


/abc/.zsh_history

Status: Connected

Number of entries: 2

On brick 1:

[root at NAS-01 abc]# ls -lart

total 75

drwxr-xr-x.  2 root  root  2 Jun  8 13:26 .zsh_history

drwxr-xr-x.  3 12078 root  3 Jun 12 11:36 .

drwxrwxrwt. 17 root  root 17 Jun 12 12:20 ..

On brick 2:

[root at DC-MTL-NAS-02 abc]# ls -lart

total 66

-rw-rw-r--.  2 12078 12078 1085 Jun 12 04:42 .zsh_history

drwxr-xr-x.  2 12078 root     3 Jun 12 10:36 .

drwxrwxrwt. 17 root  root    17 Jun 12 11:20 ..

Notice that on one brick, it is a file and on the other one it is a
directory.

On brick 1:

[root at NAS-01 abc]# getfattr -d -m . -e hex /mnt/DATA/data/abc/.zsh_history

getfattr: Removing leading '/' from absolute path names

# file: mnt/DATA/data/abc/.zsh_history

security.selinux=0x73797374656d5f753a6f626a6563745f723a756e6c6162656c65645f743a733000

trusted.afr.data01-client-0=0x000000000000000000000000

trusted.afr.data01-client-1=0x000000000000000200000000

trusted.gfid=0xdee43407139d41f091d13e106a51f262

trusted.glusterfs.dht=0x000000010000000000000000ffffffff

On brick 2:

root at NAS-02 abc]# getfattr -d -m . -e hex /mnt/DATA/data/abc/.zsh_history

getfattr: Removing leading '/' from absolute path names

# file: mnt/DATA/data/abc/.zsh_history

security.selinux=0x73797374656d5f753a6f626a6563745f723a756e6c6162656c65645f743a733000

trusted.afr.data01-client-0=0x000000170000000200000000

trusted.afr.data01-client-1=0x000000000000000000000000

trusted.bit-rot.version=0x060000000000000059397acd0005dadd

trusted.gfid=0xa70ae9af887a4a37875f5c7c81ebc803

Any recommendation on how to recover from that? BTW, the file is not
important and I could easily get rid of it without impact. So, if this is
an easy solution...

Regards,

-- 
Ludwig Gamache
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