glusterfs/SOURCES/0245-Revert-shd-glusterd-Serialize-shd-manager-to-prevent.patch

From 022701465f3e642cdb7942995647615baa266a35 Mon Sep 17 00:00:00 2001
From: Mohammed Rafi KC <rkavunga@redhat.com>
Date: Thu, 11 Jul 2019 12:49:31 +0530
Subject: [PATCH 245/255] Revert "shd/glusterd: Serialize shd manager to
 prevent race condition"

This reverts commit 646292b4f73bf1b506d034b85787f794963d7196.

BUG: 1471742
Change-Id: Ie21fbe18965d8bdea81f4276b57960a27a4db89d
Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
Reviewed-on: https://code.engineering.redhat.com/gerrit/175954
Tested-by: RHGS Build Bot <nigelb@redhat.com>
Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
---
 .../serialize-shd-manager-glusterd-restart.t       | 54 ----------------------
 xlators/mgmt/glusterd/src/glusterd-shd-svc.c       | 14 ------
 xlators/mgmt/glusterd/src/glusterd.c               |  1 -
 xlators/mgmt/glusterd/src/glusterd.h               |  3 --
 4 files changed, 72 deletions(-)
 delete mode 100644 tests/bugs/glusterd/serialize-shd-manager-glusterd-restart.t

diff --git a/tests/bugs/glusterd/serialize-shd-manager-glusterd-restart.t b/tests/bugs/glusterd/serialize-shd-manager-glusterd-restart.t
deleted file mode 100644
index 3a27c2a..0000000
--- a/tests/bugs/glusterd/serialize-shd-manager-glusterd-restart.t
+++ /dev/null
@@ -1,54 +0,0 @@
-#! /bin/bash
-
-. $(dirname $0)/../../include.rc
-. $(dirname $0)/../../cluster.rc
-
-function check_peers {
-count=`$CLI_1 peer status | grep 'Peer in Cluster (Connected)' | wc -l`
-echo $count
-}
-
-function check_shd {
-ps aux | grep $1 | grep glustershd | wc -l
-}
-
-cleanup
-
-
-TEST launch_cluster 6
-
-TESTS_EXPECTED_IN_LOOP=25
-for i in $(seq 2 6); do
-    hostname="H$i"
-    TEST $CLI_1 peer probe ${!hostname}
-done
-
-
-EXPECT_WITHIN $PROBE_TIMEOUT 5 check_peers;
-for i in $(seq 1 5); do
-
-    TEST $CLI_1 volume create ${V0}_$i replica 3 $H1:$B1/${V0}_$i $H2:$B2/${V0}_$i $H3:$B3/${V0}_$i $H4:$B4/${V0}_$i $H5:$B5/${V0}_$i $H6:$B6/${V0}_$i
-    TEST $CLI_1 volume start ${V0}_$i force
-
-done
-
-#kill a node
-TEST kill_node 3
-
-TEST $glusterd_3;
-EXPECT_WITHIN $PROBE_TIMEOUT 5 check_peers
-
-EXPECT_WITHIN $PROCESS_UP_TIMEOUT 1 check_shd $H3
-
-for i in $(seq 1 5); do
-
-    TEST $CLI_1 volume stop ${V0}_$i
-    TEST $CLI_1 volume delete ${V0}_$i
-
-done
-
-for i in $(seq 1 6); do
-    hostname="H$i"
-    EXPECT_WITHIN $PROCESS_DOWN_TIMEOUT 0 check_shd ${!hostname}
-done
-cleanup
diff --git a/xlators/mgmt/glusterd/src/glusterd-shd-svc.c b/xlators/mgmt/glusterd/src/glusterd-shd-svc.c
index 75f9a07..a9eab42 100644
--- a/xlators/mgmt/glusterd/src/glusterd-shd-svc.c
+++ b/xlators/mgmt/glusterd/src/glusterd-shd-svc.c
@@ -254,26 +254,14 @@ glusterd_shdsvc_manager(glusterd_svc_t *svc, void *data, int flags)
 {
     int ret = -1;
     glusterd_volinfo_t *volinfo = NULL;
-    glusterd_conf_t *conf = NULL;
-    gf_boolean_t shd_restart = _gf_false;
 
-    conf = THIS->private;
     volinfo = data;
-    GF_VALIDATE_OR_GOTO("glusterd", conf, out);
     GF_VALIDATE_OR_GOTO("glusterd", svc, out);
     GF_VALIDATE_OR_GOTO("glusterd", volinfo, out);
 
     if (volinfo)
         glusterd_volinfo_ref(volinfo);
 
-    while (conf->restart_shd) {
-        synclock_unlock(&conf->big_lock);
-        sleep(2);
-        synclock_lock(&conf->big_lock);
-    }
-    conf->restart_shd = _gf_true;
-    shd_restart = _gf_true;
-
     ret = glusterd_shdsvc_create_volfile(volinfo);
     if (ret)
         goto out;
@@ -322,8 +310,6 @@ glusterd_shdsvc_manager(glusterd_svc_t *svc, void *data, int flags)
         }
     }
 out:
-    if (shd_restart)
-        conf->restart_shd = _gf_false;
     if (volinfo)
         glusterd_volinfo_unref(volinfo);
     if (ret)
diff --git a/xlators/mgmt/glusterd/src/glusterd.c b/xlators/mgmt/glusterd/src/glusterd.c
index 6d7dd4a..c0973cb 100644
--- a/xlators/mgmt/glusterd/src/glusterd.c
+++ b/xlators/mgmt/glusterd/src/glusterd.c
@@ -1819,7 +1819,6 @@ init(xlator_t *this)
     conf->rpc = rpc;
     conf->uds_rpc = uds_rpc;
     conf->gfs_mgmt = &gd_brick_prog;
-    conf->restart_shd = _gf_false;
     this->private = conf;
     /* conf->workdir and conf->rundir are smaller than PATH_MAX; gcc's
      * snprintf checking will throw an error here if sprintf is used.
diff --git a/xlators/mgmt/glusterd/src/glusterd.h b/xlators/mgmt/glusterd/src/glusterd.h
index 7d07d33..0fbc9dd 100644
--- a/xlators/mgmt/glusterd/src/glusterd.h
+++ b/xlators/mgmt/glusterd/src/glusterd.h
@@ -222,9 +222,6 @@ typedef struct {
     gf_atomic_t blockers;
     uint32_t mgmt_v3_lock_timeout;
     gf_boolean_t restart_bricks;
-    gf_boolean_t restart_shd;    /* This flag prevents running two shd manager
-                                    simultaneously
-                                 */
     pthread_mutex_t attach_lock; /* Lock can be per process or a common one */
     pthread_mutex_t volume_lock; /* We release the big_lock from lot of places
                                     which might lead the modification of volinfo
-- 
1.8.3.1