Hello all- I have set up two new servers each with two RAID 5 arrays. I am trying to distribute the load across the two RAID arrays on each server by creating a distributed, replicated volume. This is the output from "gluster volume info". Volume Name: marine2 Type: Distributed-Replicate Status: Started Number of Bricks: 2 x 2 = 4 Transport-type: tcp Bricks: Brick1: 192.171.166.86:/vg1lv0/glusterfs Brick2: 192.171.166.87:/vg1lv0/glusterfs Brick3: 192.171.166.86:/vg2lv0/glusterfs Brick4: 192.171.166.87:/vg2lv0/glusterfs Options Reconfigured: performance.quick-read: off The volume seems to be working normally, but I am seeing the following messages repeated in my volume log file: [2010-11-25 10:27:06.867368] I [afr-common.c:672:afr_lookup_done] marine2-replicate-0: split brain detected during lookup of /. [2010-11-25 10:27:06.867454] I [afr-common.c:716:afr_lookup_done] marine2-replicate-0: background meta-data data self-heal triggered. path: / [2010-11-25 10:27:06.867614] I [afr-common.c:672:afr_lookup_done] marine2-replicate-1: split brain detected during lookup of /. [2010-11-25 10:27:06.867633] I [afr-common.c:716:afr_lookup_done] marine2-replicate-1: background meta-data data self-heal triggered. path: / [2010-11-25 10:27:06.868174] E [afr-self-heal-metadata.c:524:afr_sh_metadata_fix] marine2-replicate-0: Unable to self-heal permissions/ownership of '/' (possible split-brain). Please fix the file on all backend volumes [2010-11-25 10:27:06.868265] E [afr-self-heal-metadata.c:524:afr_sh_metadata_fix] marine2-replicate-1: Unable to self-heal permissions/ownership of '/' (possible split-brain). Please fix the file on all backend volumes [2010-11-25 10:27:06.868483] I [afr-self-heal-common.c:1526:afr_self_heal_completion_cbk] marine2-replicate-0: background meta-data data self-heal completed on / [2010-11-25 10:27:06.868541] I [afr-self-heal-common.c:1526:afr_self_heal_completion_cbk] marine2-replicate-1: background meta-data data self-heal completed on / I don't understand why a self heal is ever necessary on "/". These presumably are the brick directories (/vg1lv0/glusterfs etc), which are all owned by root and have the same permissions. Is this something I should be worried about, and if not how can I stop these warnings? -Dan.
