Hi. There is an ovirt-hosted-engine on gluster volume engine Replicate replica count 3 Migrate to other drives. I do: gluster volume add-brick engine clemens:/gluster-bricks/engine tiberius:/gluster-bricks/engine octavius:/gluster-bricks/engine force volume add-brick: success gluster volume remove-brick engine tiberius:/engine/datastore clemens:/engine/datastore octavius:/engine/datastore start volume remove-brick start: success ID: dd9453d3-b688-4ed8-ad37-ba901615046c gluster volume remove-brick engine octavius:/engine/datastore status Node Rebalanced-files size scanned failures skipped status run time in h:m:s --------- ----------- ----------- ----------- ----------- ----------- ------------ -------------- localhost 7 50.0GB 34 1 0 completed 0:00:02 clemens 11 21.0MB 31 0 0 completed 0:00:02 tiberius 12 25.0MB 36 0 0 completed 0:00:02 gluster volume status engine Status of volume: engine Gluster process TCP Port RDMA Port Online Pid ------------------------------------------------------------------------------ Brick octavius:/engine/datastore 49156 0 Y 15669 Brick tiberius:/engine/datastore 49156 0 Y 15930 Brick clemens:/engine/datastore 49156 0 Y 16193 Brick clemens:/gluster-bricks/engine 49159 0 Y 6168 Brick tiberius:/gluster-bricks/engine 49163 0 Y 29524 Brick octavius:/gluster-bricks/engine 49159 0 Y 50056 Self-heal Daemon on localhost N/A N/A Y 50087 Self-heal Daemon on clemens N/A N/A Y 6263 Self-heal Daemon on tiberius N/A N/A Y 29583 Task Status of Volume engine ------------------------------------------------------------------------------ Task : Remove brick ID : dd9453d3-b688-4ed8-ad37-ba901615046c Removed bricks: tiberius:/engine/datastore clemens:/engine/datastore octavius:/engine/datastore Status : completed But the data did not migrate du -hs /gluster-bricks/engine/ /engine/datastore/ 49M /gluster-bricks/engine/ 20G /engine/datastore/ Can you give some advice?