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When GlusterFS is started with option mandatory-locks, error is logged in the log file: --snip-- [2010-03-08 13:58:49] E [posix.c:1477:init] brick4: mandatory locks not supported in this minor release. [2010-03-08 13:58:49] E [posix.c:1477:init] brick3: mandatory locks not supported in this minor release. [2010-03-08 13:58:49] E [posix.c:1477:init] brick2: mandatory locks not supported in this minor release. [2010-03-08 13:58:49] E [posix.c:1477:init] brick1: mandatory locks not supported in this minor release. [2010-03-08 13:58:49] N [glusterfsd.c:1396:main] glusterfs: Successfully started --snip-- Despite that GlusterFS is started. If error is logged then GlusterFS should not be started, else the messages have to be logged as warning.
PATCH: http://patches.gluster.com/patch/2879 in master (When option mandatory is given, print warning messages instead of Error.)
PATCH: http://patches.gluster.com/patch/2880 in release-3.0 (When option mandatory is given, print warning messages instead of Error.)