'gluster volume defrag' related bug fixes

Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 1073 ('gluster defrag <VOLNAME>' fails in mainline)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1073

3 files changed, 58 insertions, 2 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-handler.c b/xlators/mgmt/glusterd/src/glusterd-handler.c
index 36dc83f4a51..cd23362a6c9 100644
--- a/xlators/mgmt/glusterd/src/glusterd-handler.c
+++ b/xlators/mgmt/glusterd/src/glusterd-handler.c
@@ -593,6 +593,55 @@ out:
         return ret;
 }
 
+
+
+int
+glusterd_handle_defrag_volume (rpcsvc_request_t *req)
+{
+        int32_t                ret           = -1;
+        gf1_cli_defrag_vol_req cli_req       = {0,};
+        glusterd_conf_t         *priv = NULL;
+        char                   cmd_str[4096] = {0,};
+
+        GF_ASSERT (req);
+
+        priv    = THIS->private;
+        if (!gf_xdr_to_cli_defrag_vol_req (req->msg[0], &cli_req)) {
+                //failed to decode msg;
+                req->rpc_err = GARBAGE_ARGS;
+                goto out;
+        }
+
+        gf_log ("glusterd", GF_LOG_NORMAL, "Received defrag volume on %s",
+                cli_req.volname);
+
+        glusterd_op_set_op (GD_OP_DEFRAG_VOLUME);
+
+        glusterd_op_set_ctx (GD_OP_DEFRAG_VOLUME, cli_req.volname);
+
+        /* TODO: make it more generic.. */
+        /* Create a directory, mount glusterfs over it, start glusterfs-defrag */
+        snprintf (cmd_str, 4096, "mkdir -p %s/mount/%s",
+                  priv->workdir, cli_req.volname);
+        system (cmd_str);
+
+        snprintf (cmd_str, 4096, "glusterfs -f %s/vols/%s/%s-tcp.vol "
+                  "--xlator-option distribute.unhashed-sticky-bit=yes "
+                  "--xlator-option distribute.lookup-unhashed=on %s/mount/%s",
+                  priv->workdir, cli_req.volname, cli_req.volname,
+                  priv->workdir, cli_req.volname);
+        system (cmd_str);
+
+        snprintf (cmd_str, 4096,
+                  "$(glusterfs-defrag %s/mount/%s; umount %s/mount/%s) &",
+                  priv->workdir, cli_req.volname, priv->workdir, cli_req.volname);
+        system (cmd_str);
+
+        ret = 0;
+out:
+        return ret;
+}
+
 int
 glusterd_handle_cli_get_volume (rpcsvc_request_t *req)
 {
diff --git a/xlators/mgmt/glusterd/src/glusterd.h b/xlators/mgmt/glusterd/src/glusterd.h
index a998ce4492b..1c483920aac 100644
--- a/xlators/mgmt/glusterd/src/glusterd.h
+++ b/xlators/mgmt/glusterd/src/glusterd.h
@@ -152,6 +152,9 @@ int
 glusterd_handle_create_volume (rpcsvc_request_t *req);
 
 int
+glusterd_handle_defrag_volume (rpcsvc_request_t *req);
+
+int
 glusterd_xfer_cli_probe_resp (rpcsvc_request_t *req, int32_t op_ret,
                               int32_t op_errno, char *hostname);
 
diff --git a/xlators/mgmt/glusterd/src/glusterd3_1-mops.c b/xlators/mgmt/glusterd/src/glusterd3_1-mops.c
index 3ea0f66fadd..2dff9d654c7 100644
--- a/xlators/mgmt/glusterd/src/glusterd3_1-mops.c
+++ b/xlators/mgmt/glusterd/src/glusterd3_1-mops.c
@@ -1088,6 +1088,10 @@ glusterd_handle_rpc_msg (rpcsvc_request_t *req)
                         ret = glusterd_handle_cli_get_volume (req);
                         break;
 
+                case GD_MGMT_CLI_DEFRAG_VOLUME:
+                        ret = glusterd_handle_defrag_volume (req);
+                        break;
+
                 default:
                         GF_ASSERT (0);
         }
@@ -1112,7 +1116,8 @@ rpcsvc_actor_t glusterd1_mgmt_actors[] = {
         [GD_MGMT_STAGE_OP] = { "STAGE_OP", GD_MGMT_STAGE_OP, glusterd_handle_rpc_msg, NULL, NULL},
         [GD_MGMT_COMMIT_OP] = { "COMMIT_OP", GD_MGMT_COMMIT_OP, glusterd_handle_rpc_msg, NULL, NULL},
         [GD_MGMT_CLI_PROBE] = { "CLI_PROBE", GD_MGMT_CLI_PROBE, glusterd_handle_rpc_msg, NULL, NULL},
-        [GD_MGMT_CLI_CREATE_VOLUME] = { "CLI_CREATE_VOLUME", GD_MGMT_CLI_CREATE_VOLUME, glusterd_handle_rpc_msg, NULL, NULL},
+        [GD_MGMT_CLI_CREATE_VOLUME] = { "CLI_CREATE_VOLUME", GD_MGMT_CLI_CREATE_VOLUME, glusterd_handle_rpc_msg, NULL,NULL},
+        [GD_MGMT_CLI_DEFRAG_VOLUME] = { "CLI_DEFRAG_VOLUME", GD_MGMT_CLI_DEFRAG_VOLUME, glusterd_handle_rpc_msg, NULL,NULL},
         [GD_MGMT_CLI_DEPROBE] = { "FRIEND_REMOVE", GD_MGMT_CLI_DEPROBE, glusterd_handle_rpc_msg, NULL, NULL},
         [GD_MGMT_CLI_LIST_FRIENDS] = { "LIST_FRIENDS", GD_MGMT_CLI_LIST_FRIENDS, glusterd_handle_rpc_msg, NULL, NULL},
         [GD_MGMT_CLI_START_VOLUME] = { "START_VOLUME", GD_MGMT_CLI_START_VOLUME, glusterd_handle_rpc_msg, NULL, NULL},
@@ -1139,7 +1144,6 @@ struct rpcsvc_program glusterd1_mop_prog = {
         .progver   = GLUSTERD1_MGMT_VERSION,
         .numactors = GLUSTERD1_MGMT_PROCCNT,
         .actors    = glusterd1_mgmt_actors,
-        .progport  = 4284,
 };