[Bugs] [Bug 1453977] Brick Multiplexing: Deleting brick directories of the base volume must gracefully detach from glusterfsd without impacting other volumes IO (currently seeing transport end point error)

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1453977



--- Comment #19 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/17356 committed in master by Jeff Darcy
(jeff at pl.atyp.us) 
------
commit dba55ae364a2772904bb68a6bd0ea87289ee1470
Author: Mohit Agrawal <moagrawa at redhat.com>
Date:   Thu May 25 21:43:42 2017 +0530

    glusterfs: Not able to mount running volume after enable brick mux and
stopped any volume

    Problem: After enabled brick mux if any volume has down and then try ot run
mount
             with running volume , mount command is hung.

    Solution: After enable brick mux server has shared one data structure
server_conf
              for all associated subvolumes.After down any subvolume in some
              ungraceful manner (remove brick directory) posix xlator sends
              GF_EVENT_CHILD_DOWN event to parent xlatros and server notify
              updates the child_up to false in server_conf.When client is
trying
              to communicate with server through mount it checks conf->child_up
              and it is FALSE so it throws message "translator are not yet
ready".
              From this patch updated structure server_conf to save child_up
status
              for xlator wise. Another improtant correction from this patch is
              cleanup threads from server side xlators after stop the volume.

    BUG: 1453977
    Change-Id: Ic54da3f01881b7c9429ce92cc569236eb1d43e0d
    Signed-off-by: Mohit Agrawal <moagrawa at redhat.com>
    Reviewed-on: https://review.gluster.org/17356
    Smoke: Gluster Build System <jenkins at build.gluster.org>
    NetBSD-regression: NetBSD Build System <jenkins at build.gluster.org>
    Reviewed-by: Raghavendra Talur <rtalur at redhat.com>
    CentOS-regression: Gluster Build System <jenkins at build.gluster.org>
    Reviewed-by: Jeff Darcy <jeff at pl.atyp.us>

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