On 05/05/2018 10:04 PM, Yanfei Wang wrote:
Hi, https://docs.gluster.org/en/v3/Administrator%20Guide/arbiter-volumes-and-quorum/, said, ``` There is a corner case even with replica 3 volumes where the file can end up in a split-brain. AFR usually takes range locks for the {offset, length} of the write. If 3 writes happen on the same file at non-overlapping {offset, length} and each write fails on (only) one different brick, then we have AFR xattrs of the file blaming each other. ``` Could some body give more details on it? Any clues are welcome.
We recently (glusterfs 3.13 onward) changed AFR to take full locks for all writes. You can see the commit message in https://review.gluster.org/#/c/19218/ for details. It is a configurable option, so you can change it to use range locks if needed.
-Ravi
Thanks a lot - Fei _______________________________________________ Gluster-devel mailing list Gluster-devel@gluster.org http://lists.gluster.org/mailman/listinfo/gluster-devel
_______________________________________________ Gluster-devel mailing list Gluster-devel@gluster.org http://lists.gluster.org/mailman/listinfo/gluster-devel
