cluster/distribute: Prevent spurious multiple defrag crawls

In dht_notify, we used to create a thread to start defrag
crawls after we had heard from all child subvols.
This was in-correct, as a later event, could also trigger the
crawl again(due to the fact that all subvols had responded).

The fix is to make sure, the thread is started only once after
all subvols have responded the first time

Change-Id: Ifc2978b9dc866af2395b79911eca50ab38ff9457
BUG: 916449
Signed-off-by: shishir gowda <sgowda@redhat.com>
Reviewed-on: http://review.gluster.org/4587
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
glusterd: Fix some options in vme table

Some of the options had invalid '.flags' members. In the original table
these table these were supposed to be the op-versions, but, the entries
for the below options were missing the flags field the op-version was
entered in that place.

Change-Id: I408f5a972743eb37d9a58a809e8be8cb385bced8
BUG: 903478
Signed-off-by: Kaushal M <kaushal@redhat.com>
Reviewed-on: http://review.gluster.org/4593
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
glusterd: Added the validation function for subvols-per-directory

Change-Id: Ie2259023b9001311a2032792639c3093054f6750
BUG: 896431
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/4552
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
performance/write-behind: Add test case for fd being marked bad
                          after write failures.

Change-Id: I5a3c27be0ad77b7f2660f45977f9f1f8f34ae31c
BUG: 765473
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Reviewed-on: http://review.gluster.org/4560
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
libglusterfs: avoid the logging which says the port is invalid

If the reserved ports file in proc contains just a newline, then
do not proceed with ports checking and reserving.

Change-Id: If610b0e49a97e5c22e7e2b1bb4155c9616a4612a
BUG: 762989
Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-on: http://review.gluster.org/4583
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Merge branch 'master' into op-version-for-volumes

Conflicts:
	xlators/mgmt/glusterd/src/glusterd-volume-set.c

Change-Id: Ie2c4f58cf4b3707f29e3d56dce1f4c1ed91a8445
merge fixes

Change-Id: Ib2fdcea3f638e5579f56cdacb0ed96f38dc24cff