[Bugs] [Bug 1560957] After performing remove-brick followed by add-brick operation, brick went offline state

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1560957

Worker Ant <bugzilla-bot at gluster.org> changed:

           What    |Removed                     |Added
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             Status|POST                        |MODIFIED



--- Comment #4 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/19800 committed in master by "Atin
Mukherjee" <amukherj at redhat.com> with a commit message- glusterd: mark
port_registered to true for all running bricks with brick mux

glusterd maintains a boolean flag 'port_registered' which is used to determine
if a brick has completed its portmap sign in process. This flag is (re)set in
pmap_sigin and pmap_signout events. In case of brick multiplexing this flag is
the identifier to determine if the very first brick with which the process is
spawned up has completed its sign in process. However in case of glusterd
restart when a brick is already identified as running, glusterd does a
pmap_registry_bind to ensure its portmap table is updated but this flag isn't
which is fine in case of non brick multiplex case but causes an issue if
the very first brick which came as part of process is replaced and then
the subsequent brick attach will fail. One of the way to validate this
is to create and start a volume, remove the first brick and then
add-brick a new one. Add-brick operation will take a very long time and
post that the volume status will show all other brick status apart from
the new brick as down.

Solution is to set brickinfo->port_registered to true for all the
running bricks when brick multiplexing is enabled.

Change-Id: Ib0662d99d0fa66b1538947fd96b43f1cbc04e4ff
Fixes: bz#1560957
Signed-off-by: Atin Mukherjee <amukherj at redhat.com>

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