Scenarios tested:

* Upgrade the node when there are stripe / tiering and regular
type of volumes are present.
  - All volumes are started fine (as the change was not on brick volfile)
  - For tier, the functionality may not even work, as changetimerecorder
    is not present.
  - 'gluster volume info' properly shows as 'NOT SUPPORTED' for stripe and
    tier type of volume.

* Upgrade in a rolling upgrade scenario, where an old version is
able to connect to higher master.
  - on a normal volume, if the volfile-server was new, the newer client
    volfiles needed to have utime xlator conditionally.
  - with this one change, all other changes seem to work fine.

Change-Id: Ib2d3b69dafa02b2c695a735b13c1aa70aba07cb8
updates: bz#1635688
Signed-off-by: Amar Tumballi <amarts@redhat.com>

Fixes: bz#1665358
Change-Id: Idbf88ec3ac683733b32c313377eeb72f2819bf0d
Signed-off-by: Amar Tumballi <amarts@redhat.com>

problem:
During a handshake, when we import a friend data
snap description variable was just referenced to
dictionary value.

Solution:
snap description should have a separate memory allocated
through gf_strdup

Change-Id: I94da0c57919e1228919231d1563a001362b100b8
fixes: bz#1618004
Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>

fix brick checks for validating-server-quorum.t & quorum-validation.t
...and make brick_up_status_1 function more generic.

Also fix a timing issue in
bug-1482023-snpashot-issue-with-other-processes-accessing-mounted-path.t

Change-Id: I797ef4cec5b160aafa979bae7151b1e99fcb48ac
Updates: bz#1603063
Signed-off-by: Atin Mukherjee <amukherj@redhat.com>

anonymous fds interfere with working of read-ahead as read-ahead won't
be able to store its cache in fd. Also, as seen in bz 1455872,
anonymous fds also affect performance of large file sequential reads
as the cost of opening fd for each read on brick stack is
significant. So, have a proper fd which enables read-ahead to store
its cache and brick stack to reuse the fd during reads.

With this change test
tests/bugs/snapshot/bug-1167580-set-proper-uid-and-gid-during-nfs-access.t
fails consistently. The failure can also be seen with open-behind
off. bz 1611532 has been filed to track the issue with test. Thanks to
Rafi <rkavunga@redhat.com> for assistance provided in debugging test
failure.

Change-Id: Ifa52d8ff017f115e83247f3396b9d27f0295ce3f
Signed-off-by: Raghavendra G <rgowdapp@redhat.com>
Fixes: bz#1455872

        During snap delete after removing brick-path we should remove
        snap-path too i.e. /var/run/gluster/snaps/<snap-name>.

        During snap deactivate also we should remove snap-path.

Change-Id: Ib80b5d8844d6479d31beafa732e5671b0322248b
fixes: bz#1597662
Signed-off-by: Sunny Kumar <sunkumar@redhat.com>

In bug-1482023-snpashot-issue-with-other-processes-accessing-mounted-path.t
check for peer count after starting glusterd instance on node 2

Change-Id: I3f92013719d94b6d92fb5db25efef1fb4b41d510
BUG: 1540607
Signed-off-by: Atin Mukherjee <amukherj@redhat.com>

In one of the case in commit cb0339f there's one particular case where
after removing the old snap it wasn't writing the new snap version and
this resulted into one of the test to fail spuriously.

Change-Id: I3e83435fb62d6bba3bbe227e40decc6ce37ea77b
BUG: 1540607
Signed-off-by: Atin Mukherjee <amukherj@redhat.com>

Problem : snapshot creation was failing after brick reset/replace

Fix : changed code to set mount_dir value in rsp_dict during prerequisites
      phase i.e glusterd_brick_op_prerequisites call and removed form prevalidate
      phase.
Signed-off-by: Sunny Kumar <sunkumar@redhat.com>

Change-Id: Ief5d0fafe882a7eb1a7da8535b7c7ce6f011604c
BUG: 1512451

Update .t tier tests to use the new tier CLI.

Change-Id: I0e7f1769071108d8266fc86378c4466bcaf96e7d
BUG: 1505253
Signed-off-by: N Balachandran <nbalacha@redhat.com>