Hi all,
I have 4 glusterd servers running a single glusterfs volume. The
volume was created using the gluster command line, with no changes from
default. The same machines all mount the volume using the native glusterfs
client:
[r...@localhost ~]# gluster volume create datastore replica 2 transport tcp
192.168.253.1:/glusterfs/primary 192.168.253.3:/glusterfs/secondary
192.168.253.2:/glusterfs/primary 192.168.253.4:/glusterfs/secondary
192.168.253.3:/glusterfs/primary 192.168.253.1:/glusterfs/secondary
192.168.253.4:/glusterfs/primary 192.168.253.2:/glusterfs/secondary
[r...@localhost ~]# cat /etc/fstab
...
/dev/cciss/c0d0p6 /glusterfs/primary ext4 defaults,noatime 1 2
/dev/cciss/c0d1p6 /glusterfs/secondary ext4 defaults,noatime 1 2
192.168.253.1:/datastore /mnt/datastore glusterfs defaults,_netdev 0 0
[r...@localhost ~]# gluster volume info
Volume Name: datastore
Type: Distributed-Replicate
Status: Started
Number of Bricks: 4 x 2 = 8
Transport-type: tcp
Bricks:
Brick1: 192.168.253.1:/glusterfs/primary
Brick2: 192.168.253.3:/glusterfs/secondary
Brick3: 192.168.253.2:/glusterfs/primary
Brick4: 192.168.253.4:/glusterfs/secondary
Brick5: 192.168.253.3:/glusterfs/primary
Brick6: 192.168.253.1:/glusterfs/secondary
Brick7: 192.168.253.4:/glusterfs/primary
Brick8: 192.168.253.2:/glusterfs/secondary
The platform is not currently running production data and I have been testing
the redundancy of the setup (pulling cables etc.). All my servers are now
logging the following messages every 1 minute or so:
[2010-11-11 14:18:49.636327] I [afr-common.c:672:afr_lookup_done]
datastore-replicate-0: split brain detected during lookup of /.
[2010-11-11 14:18:49.636388] I [afr-common.c:716:afr_lookup_done]
datastore-replicate-0: background meta-data data self-heal triggered. path: /
[2010-11-11 14:18:49.636863] E
[afr-self-heal-metadata.c:524:afr_sh_metadata_fix] datastore-replicate-0:
Unable to self-heal permissions/ownership of '/' (possible split-brain). Please
fix the file on all backend volumes
[2010-11-11 14:18:49.637080] I
[afr-self-heal-common.c:1526:afr_self_heal_completion_cbk]
datastore-replicate-0: background meta-data data self-heal completed on /
[2010-11-11 14:18:49.637561] I [afr-common.c:672:afr_lookup_done]
datastore-replicate-0: split brain detected during lookup of /.
[2010-11-11 14:18:49.637588] I [afr-common.c:716:afr_lookup_done]
datastore-replicate-0: background meta-data data self-heal triggered. path: /
[2010-11-11 14:18:49.638064] E
[afr-self-heal-metadata.c:524:afr_sh_metadata_fix] datastore-replicate-0:
Unable to self-heal permissions/ownership of '/' (possible split-brain). Please
fix the file on all backend volumes
[2010-11-11 14:18:49.638265] I
[afr-self-heal-common.c:1526:afr_self_heal_completion_cbk]
datastore-replicate-0: background meta-data data self-heal completed on /
Can anyone tell me what I need to do to fix this?
Thanks,
Aaron
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