Tier: Stop tierd for detach start

Problem: tierd was stopped only after detach commit
This makes the detach take a longer time. The detach
demotes the files to the cold brick and if the promotion
frequency is hit, then the tierd starts to promote files to
hot tier again.

Fix: stop tierd after detach start so the files get
demoted faster.

Note: the is_tier_enabled was not maintained properly.
That has been fixed too. some code clean up has been done.

Signed-off-by: hari gowtham <hgowtham@redhat.com>

Change-Id: I532f7410cea04fbb960105483810ea3560ca149b
BUG: 1446381

1 files changed, 10 insertions, 0 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c
index fe96d6be094..066d2f72f81 100644
--- a/xlators/mgmt/glusterd/src/glusterd-utils.c
+++ b/xlators/mgmt/glusterd/src/glusterd-utils.c
@@ -12174,6 +12174,16 @@ glusterd_is_volume_inode_quota_enabled (glusterd_volinfo_t *volinfo)
 }
 
 int
+glusterd_is_tierd_supposed_to_be_enabled (glusterd_volinfo_t *volinfo)
+{
+        if ((volinfo->type != GF_CLUSTER_TYPE_TIER) ||
+                        (volinfo->tier.op == GD_OP_DETACH_TIER))
+                return _gf_false;
+        else
+                return _gf_true;
+}
+
+int
 glusterd_is_tierd_enabled (glusterd_volinfo_t *volinfo)
 {
         return volinfo->is_tier_enabled;