[Gluster-users] Failed to mount nfs due to split-brain and Input/Output Error

[Ravishankar N]

Hi,

What version of gluster are you using?

1. The afr xattrs on '/' indicate a meta-data split-brain. You can 
resolve it using one of the policies listed in 
https://docs.gluster.org/en/latest/Troubleshooting/resolving-splitbrain/

For example, "|gluster volume heal gv0 split-brain latest-mtime / "
|

2. Is the file corresponding to the other gfid 
(81289110-867b-42ff-ba3b-1373a187032b) present in all bricks? What do 
the getfattr outputs for this file indicate?

3. As for the discrepancy in output of heal info, is node2 connected to 
the other nodes? Does heal info still print the details of all 3 bricks 
when you run it on node2 ?
-Ravi

On 07/04/2018 01:47 AM, Anh Vo wrote:
> Actually we just discovered that the heal info command was returning 
> different things when executed on the different nodes of our 3-replica 
> setup.
> When we execute it on node2 we did not see the split brain reported 
> "/" but if I execute it on node0 and node1 I am seeing:
>
> x at gfs-vm001:~$ sudo gluster volume heal gv0 info | tee heal-info
> Brick gfs-vm000:/gluster/brick/brick0
> <gfid:81289110-867b-42ff-ba3b-1373a187032b>
> / - Is in split-brain
>
> Status: Connected
> Number of entries: 2
>
> Brick gfs-vm001:/gluster/brick/brick0
> / - Is in split-brain
>
> <gfid:81289110-867b-42ff-ba3b-1373a187032b>
> Status: Connected
> Number of entries: 2
>
> Brick gfs-vm002:/gluster/brick/brick0
> / - Is in split-brain
>
> Status: Connected
> Number of entries: 1
>
>
> I ran getfattr -d -m . -e hex /gluster/brick/brick0 on all three nodes 
> and I am seeing node2 has slightly different attr:
> node0:
> sudo getfattr -d -m . -e hex /gluster/brick/brick0
> getfattr: Removing leading '/' from absolute path names
> # file: gluster/brick/brick0
> trusted.afr.gv0-client-2=0x000000000000000100000000
> trusted.gfid=0x00000000000000000000000000000001
> trusted.glusterfs.dht=0x000000010000000000000000ffffffff
> trusted.glusterfs.volume-id=0x7fa3aac372d543f987ed0c66b77f02e2
>
> node1:
> sudo getfattr -d -m . -e hex /gluster/brick/brick0
> getfattr: Removing leading '/' from absolute path names
> # file: gluster/brick/brick0
> trusted.afr.gv0-client-2=0x000000000000000100000000
> trusted.gfid=0x00000000000000000000000000000001
> trusted.glusterfs.dht=0x000000010000000000000000ffffffff
> trusted.glusterfs.volume-id=0x7fa3aac372d543f987ed0c66b77f02e2
>
> node2:
> sudo getfattr -d -m . -e hex /gluster/brick/brick0
> getfattr: Removing leading '/' from absolute path names
> # file: gluster/brick/brick0
> trusted.afr.dirty=0x000000000000000000000000
> trusted.afr.gv0-client-0=0x000000000000000200000000
> trusted.afr.gv0-client-1=0x000000000000000200000000
> trusted.afr.gv0-client-2=0x000000000000000000000000
> trusted.gfid=0x00000000000000000000000000000001
> trusted.glusterfs.dht=0x000000010000000000000000ffffffff
> trusted.glusterfs.volume-id=0x7fa3aac372d543f987ed0c66b77f02e2
>
> Where do I go from here? Thanks

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