[Gluster-users] 3.6: Migrate one brick's data to multiple remaining bricks

[Iain Milne]

We're using 3.6 with three servers; one brick each in a (100TB+)
distributed volume. They all use XFS.

We'd like to move to ZFS, without user interruption.

Is it as simple (with 3.6) as issuing the remove-brick command for the
first server, waiting for its data to migrate to the other two
(automatically?), reformatting as ZFS, then adding the brick again. Rinse
and repeat for the other two servers?

Any two servers currently have enough capacity to hold the data from all
three.

I've struggled to find much documentation on this, except for the
following snippet which came from
https://github.com/gluster/glusterfs/blob/release-3.6/doc/release-notes/3.6.0.md

"Prior to 3.6, volume remove-brick <volname> CLI would remove the brick
from the volume without performing any data migration. Now the default
behavior has been changed to perform data migration when this command is
issued."