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From 308fe0d81dbef9f84bb1ad8e7309e3ffc28d6394 Mon Sep 17 00:00:00 2001
From: Mohammed Rafi KC <rkavunga@redhat.com>
Date: Thu, 11 Jul 2019 12:37:29 +0530
Subject: [PATCH 230/255] Revert "glusterd/svc: update pid of mux volumes from
 the shd process"

This reverts commit b0815b8a84a07d17a1215c55afc38888ee9fc37c.
Label : DOWNSTREAM ONLY

BUG: 1471742
Change-Id: Iab11c686565e9a9c852f2b7c2d236fa1a348f96a
Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
Reviewed-on: https://code.engineering.redhat.com/gerrit/175940
Tested-by: RHGS Build Bot <nigelb@redhat.com>
Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
---
 glusterfsd/src/gf_attach.c                         |   2 -
 glusterfsd/src/glusterfsd-mgmt.c                   |  66 ++-------
 libglusterfs/src/glusterfs/glusterfs.h             |   2 +-
 libglusterfs/src/glusterfs/libglusterfs-messages.h |   3 +-
 libglusterfs/src/graph.c                           | 154 +--------------------
 rpc/xdr/src/glusterd1-xdr.x                        |   1 -
 xlators/mgmt/glusterd/src/glusterd-handler.c       |   2 -
 xlators/mgmt/glusterd/src/glusterd-handshake.c     |  42 +-----
 xlators/mgmt/glusterd/src/glusterd-op-sm.c         |   4 -
 .../mgmt/glusterd/src/glusterd-shd-svc-helper.c    |  25 ----
 .../mgmt/glusterd/src/glusterd-shd-svc-helper.h    |   3 -
 xlators/mgmt/glusterd/src/glusterd-shd-svc.c       |   8 +-
 xlators/mgmt/glusterd/src/glusterd-svc-helper.c    |  57 ++++----
 xlators/mgmt/glusterd/src/glusterd-syncop.c        |   2 -
 xlators/mgmt/glusterd/src/glusterd-utils.c         |   6 +-
 15 files changed, 52 insertions(+), 325 deletions(-)

diff --git a/glusterfsd/src/gf_attach.c b/glusterfsd/src/gf_attach.c
index 1bff854..6293b9b 100644
--- a/glusterfsd/src/gf_attach.c
+++ b/glusterfsd/src/gf_attach.c
@@ -65,8 +65,6 @@ send_brick_req(xlator_t *this, struct rpc_clnt *rpc, char *path, int op)
     brick_req.name = path;
     brick_req.input.input_val = NULL;
     brick_req.input.input_len = 0;
-    brick_req.dict.dict_val = NULL;
-    brick_req.dict.dict_len = 0;
 
     req_size = xdr_sizeof((xdrproc_t)xdr_gd1_mgmt_brick_op_req, req);
     iobuf = iobuf_get2(rpc->ctx->iobuf_pool, req_size);
diff --git a/glusterfsd/src/glusterfsd-mgmt.c b/glusterfsd/src/glusterfsd-mgmt.c
index f930e0a..1d2cd1a 100644
--- a/glusterfsd/src/glusterfsd-mgmt.c
+++ b/glusterfsd/src/glusterfsd-mgmt.c
@@ -50,16 +50,13 @@ int
 emancipate(glusterfs_ctx_t *ctx, int ret);
 int
 glusterfs_process_svc_attach_volfp(glusterfs_ctx_t *ctx, FILE *fp,
-                                   char *volfile_id, char *checksum,
-                                   dict_t *dict);
+                                   char *volfile_id, char *checksum);
 int
 glusterfs_mux_volfile_reconfigure(FILE *newvolfile_fp, glusterfs_ctx_t *ctx,
-                                  gf_volfile_t *volfile_obj, char *checksum,
-                                  dict_t *dict);
+                                  gf_volfile_t *volfile_obj, char *checksum);
 int
 glusterfs_process_svc_attach_volfp(glusterfs_ctx_t *ctx, FILE *fp,
-                                   char *volfile_id, char *checksum,
-                                   dict_t *dict);
+                                   char *volfile_id, char *checksum);
 int
 glusterfs_process_svc_detach(glusterfs_ctx_t *ctx, gf_volfile_t *volfile_obj);
 
@@ -78,8 +75,7 @@ mgmt_cbk_spec(struct rpc_clnt *rpc, void *mydata, void *data)
 }
 
 int
-mgmt_process_volfile(const char *volfile, ssize_t size, char *volfile_id,
-                     dict_t *dict)
+mgmt_process_volfile(const char *volfile, ssize_t size, char *volfile_id)
 {
     glusterfs_ctx_t *ctx = NULL;
     int ret = 0;
@@ -149,11 +145,11 @@ mgmt_process_volfile(const char *volfile, ssize_t size, char *volfile_id,
              * the volfile
              */
             ret = glusterfs_process_svc_attach_volfp(ctx, tmpfp, volfile_id,
-                                                     sha256_hash, dict);
+                                                     sha256_hash);
             goto unlock;
         }
         ret = glusterfs_mux_volfile_reconfigure(tmpfp, ctx, volfile_obj,
-                                                sha256_hash, dict);
+                                                sha256_hash);
         if (ret < 0) {
             gf_msg_debug("glusterfsd-mgmt", EINVAL, "Reconfigure failed !!");
         }
@@ -391,8 +387,6 @@ err:
         UNLOCK(&ctx->volfile_lock);
     if (xlator_req.input.input_val)
         free(xlator_req.input.input_val);
-    if (xlator_req.dict.dict_val)
-        free(xlator_req.dict.dict_val);
     free(xlator_req.name);
     xlator_req.name = NULL;
     return 0;
@@ -567,8 +561,6 @@ out:
 
     free(xlator_req.name);
     free(xlator_req.input.input_val);
-    if (xlator_req.dict.dict_val)
-        free(xlator_req.dict.dict_val);
     if (output)
         dict_unref(output);
     if (dict)
@@ -990,8 +982,6 @@ out:
     if (input)
         dict_unref(input);
     free(xlator_req.input.input_val); /*malloced by xdr*/
-    if (xlator_req.dict.dict_val)
-        free(xlator_req.dict.dict_val);
     if (output)
         dict_unref(output);
     free(xlator_req.name);
@@ -1072,8 +1062,6 @@ glusterfs_handle_attach(rpcsvc_request_t *req)
     out:
         UNLOCK(&ctx->volfile_lock);
     }
-    if (xlator_req.dict.dict_val)
-        free(xlator_req.dict.dict_val);
     free(xlator_req.input.input_val);
     free(xlator_req.name);
 
@@ -1089,7 +1077,6 @@ glusterfs_handle_svc_attach(rpcsvc_request_t *req)
     };
     xlator_t *this = NULL;
     glusterfs_ctx_t *ctx = NULL;
-    dict_t *dict = NULL;
 
     GF_ASSERT(req);
     this = THIS;
@@ -1104,41 +1091,20 @@ glusterfs_handle_svc_attach(rpcsvc_request_t *req)
         req->rpc_err = GARBAGE_ARGS;
         goto out;
     }
-
     gf_msg(THIS->name, GF_LOG_INFO, 0, glusterfsd_msg_41,
            "received attach "
            "request for volfile-id=%s",
            xlator_req.name);
-
-    dict = dict_new();
-    if (!dict) {
-        ret = -1;
-        errno = ENOMEM;
-        goto out;
-    }
-
-    ret = dict_unserialize(xlator_req.dict.dict_val, xlator_req.dict.dict_len,
-                           &dict);
-    if (ret) {
-        gf_msg(this->name, GF_LOG_WARNING, EINVAL, glusterfsd_msg_42,
-               "failed to unserialize xdata to dictionary");
-        goto out;
-    }
-    dict->extra_stdfree = xlator_req.dict.dict_val;
-
     ret = 0;
 
     if (ctx->active) {
         ret = mgmt_process_volfile(xlator_req.input.input_val,
-                                   xlator_req.input.input_len, xlator_req.name,
-                                   dict);
+                                   xlator_req.input.input_len, xlator_req.name);
     } else {
         gf_msg(this->name, GF_LOG_WARNING, EINVAL, glusterfsd_msg_42,
                "got attach for %s but no active graph", xlator_req.name);
     }
 out:
-    if (dict)
-        dict_unref(dict);
     if (xlator_req.input.input_val)
         free(xlator_req.input.input_val);
     if (xlator_req.name)
@@ -1275,8 +1241,6 @@ out:
     GF_FREE(filepath);
     if (xlator_req.input.input_val)
         free(xlator_req.input.input_val);
-    if (xlator_req.dict.dict_val)
-        free(xlator_req.dict.dict_val);
 
     return ret;
 }
@@ -1349,8 +1313,6 @@ out:
     if (dict)
         dict_unref(dict);
     free(xlator_req.input.input_val);  // malloced by xdr
-    if (xlator_req.dict.dict_val)
-        free(xlator_req.dict.dict_val);
     if (output)
         dict_unref(output);
     free(xlator_req.name);  // malloced by xdr
@@ -1499,8 +1461,6 @@ out:
     if (output)
         dict_unref(output);
     free(brick_req.input.input_val);
-    if (brick_req.dict.dict_val)
-        free(brick_req.dict.dict_val);
     free(brick_req.name);
     GF_FREE(xname);
     GF_FREE(msg);
@@ -1694,8 +1654,6 @@ out:
     if (dict)
         dict_unref(dict);
     free(node_req.input.input_val);
-    if (node_req.dict.dict_val)
-        free(node_req.dict.dict_val);
     GF_FREE(msg);
     GF_FREE(rsp.output.output_val);
     GF_FREE(node_name);
@@ -1799,8 +1757,6 @@ glusterfs_handle_nfs_profile(rpcsvc_request_t *req)
 
 out:
     free(nfs_req.input.input_val);
-    if (nfs_req.dict.dict_val)
-        free(nfs_req.dict.dict_val);
     if (dict)
         dict_unref(dict);
     if (output)
@@ -1879,8 +1835,6 @@ out:
     if (dict)
         dict_unref(dict);
     free(xlator_req.input.input_val);  // malloced by xdr
-    if (xlator_req.dict.dict_val)
-        free(xlator_req.dict.dict_val);
     if (output)
         dict_unref(output);
     free(xlator_req.name);  // malloced by xdr
@@ -2009,8 +1963,7 @@ out:
     if (dict)
         dict_unref(dict);
     free(brick_req.input.input_val);
-    if (brick_req.dict.dict_val)
-        free(brick_req.dict.dict_val);
+
     gf_log(THIS->name, GF_LOG_DEBUG, "Returning %d", ret);
     return ret;
 }
@@ -2260,8 +2213,7 @@ volfile:
     size = rsp.op_ret;
     volfile_id = frame->local;
     if (mgmt_is_multiplexed_daemon(ctx->cmd_args.process_name)) {
-        ret = mgmt_process_volfile((const char *)rsp.spec, size, volfile_id,
-                                   dict);
+        ret = mgmt_process_volfile((const char *)rsp.spec, size, volfile_id);
         goto post_graph_mgmt;
     }
 
diff --git a/libglusterfs/src/glusterfs/glusterfs.h b/libglusterfs/src/glusterfs/glusterfs.h
index b6327b8..9ec2365 100644
--- a/libglusterfs/src/glusterfs/glusterfs.h
+++ b/libglusterfs/src/glusterfs/glusterfs.h
@@ -744,7 +744,7 @@ typedef struct {
     char vol_id[NAME_MAX + 1];
     struct list_head volfile_list;
     glusterfs_graph_t *graph;
-    FILE *pidfp;
+
 } gf_volfile_t;
 
 glusterfs_ctx_t *
diff --git a/libglusterfs/src/glusterfs/libglusterfs-messages.h b/libglusterfs/src/glusterfs/libglusterfs-messages.h
index 7e0eebb..ea2aa60 100644
--- a/libglusterfs/src/glusterfs/libglusterfs-messages.h
+++ b/libglusterfs/src/glusterfs/libglusterfs-messages.h
@@ -111,7 +111,6 @@ GLFS_MSGID(
     LG_MSG_PTHREAD_NAMING_FAILED, LG_MSG_SYSCALL_RETURNS_WRONG,
     LG_MSG_XXH64_TO_GFID_FAILED, LG_MSG_ASYNC_WARNING, LG_MSG_ASYNC_FAILURE,
     LG_MSG_GRAPH_CLEANUP_FAILED, LG_MSG_GRAPH_SETUP_FAILED,
-    LG_MSG_GRAPH_DETACH_STARTED, LG_MSG_GRAPH_ATTACH_FAILED,
-    LG_MSG_GRAPH_ATTACH_PID_FILE_UPDATED);
+    LG_MSG_GRAPH_DETACH_STARTED, LG_MSG_GRAPH_ATTACH_FAILED);
 
 #endif /* !_LG_MESSAGES_H_ */
diff --git a/libglusterfs/src/graph.c b/libglusterfs/src/graph.c
index 05f76bf..172dc61 100644
--- a/libglusterfs/src/graph.c
+++ b/libglusterfs/src/graph.c
@@ -1467,21 +1467,6 @@ out:
 }
 
 int
-glusterfs_svc_mux_pidfile_cleanup(gf_volfile_t *volfile_obj)
-{
-    if (!volfile_obj || !volfile_obj->pidfp)
-        return 0;
-
-    gf_msg_trace("glusterfsd", 0, "pidfile %s cleanup", volfile_obj->vol_id);
-
-    lockf(fileno(volfile_obj->pidfp), F_ULOCK, 0);
-    fclose(volfile_obj->pidfp);
-    volfile_obj->pidfp = NULL;
-
-    return 0;
-}
-
-int
 glusterfs_process_svc_detach(glusterfs_ctx_t *ctx, gf_volfile_t *volfile_obj)
 {
     xlator_t *last_xl = NULL;
@@ -1517,7 +1502,6 @@ glusterfs_process_svc_detach(glusterfs_ctx_t *ctx, gf_volfile_t *volfile_obj)
 
         list_del_init(&volfile_obj->volfile_list);
         glusterfs_mux_xlator_unlink(parent_graph->top, xl);
-        glusterfs_svc_mux_pidfile_cleanup(volfile_obj);
         parent_graph->last_xl = glusterfs_get_last_xlator(parent_graph);
         parent_graph->xl_count -= graph->xl_count;
         parent_graph->leaf_count -= graph->leaf_count;
@@ -1547,126 +1531,8 @@ out:
 }
 
 int
-glusterfs_svc_mux_pidfile_setup(gf_volfile_t *volfile_obj, const char *pid_file)
-{
-    int ret = -1;
-    FILE *pidfp = NULL;
-
-    if (!pid_file || !volfile_obj)
-        goto out;
-
-    if (volfile_obj->pidfp) {
-        ret = 0;
-        goto out;
-    }
-    pidfp = fopen(pid_file, "a+");
-    if (!pidfp) {
-        goto out;
-    }
-    volfile_obj->pidfp = pidfp;
-
-    ret = lockf(fileno(pidfp), F_TLOCK, 0);
-    if (ret) {
-        ret = 0;
-        goto out;
-    }
-out:
-    return ret;
-}
-
-int
-glusterfs_svc_mux_pidfile_update(gf_volfile_t *volfile_obj,
-                                 const char *pid_file, pid_t pid)
-{
-    int ret = 0;
-    FILE *pidfp = NULL;
-    int old_pid;
-
-    if (!volfile_obj->pidfp) {
-        ret = glusterfs_svc_mux_pidfile_setup(volfile_obj, pid_file);
-        if (ret == -1)
-            goto out;
-    }
-    pidfp = volfile_obj->pidfp;
-    ret = fscanf(pidfp, "%d", &old_pid);
-    if (ret <= 0) {
-        goto update;
-    }
-    if (old_pid == pid) {
-        ret = 0;
-        goto out;
-    } else {
-        gf_msg("mgmt", GF_LOG_INFO, 0, LG_MSG_GRAPH_ATTACH_PID_FILE_UPDATED,
-               "Old pid=%d found in pidfile %s. Cleaning the old pid and "
-               "Updating new pid=%d",
-               old_pid, pid_file, pid);
-    }
-update:
-    ret = sys_ftruncate(fileno(pidfp), 0);
-    if (ret) {
-        gf_msg("glusterfsd", GF_LOG_ERROR, errno,
-               LG_MSG_GRAPH_ATTACH_PID_FILE_UPDATED,
-               "pidfile %s truncation failed", pid_file);
-        goto out;
-    }
-
-    ret = fprintf(pidfp, "%d\n", pid);
-    if (ret <= 0) {
-        gf_msg("glusterfsd", GF_LOG_ERROR, errno,
-               LG_MSG_GRAPH_ATTACH_PID_FILE_UPDATED, "pidfile %s write failed",
-               pid_file);
-        goto out;
-    }
-
-    ret = fflush(pidfp);
-    if (ret) {
-        gf_msg("glusterfsd", GF_LOG_ERROR, errno,
-               LG_MSG_GRAPH_ATTACH_PID_FILE_UPDATED, "pidfile %s write failed",
-               pid_file);
-        goto out;
-    }
-out:
-    return ret;
-}
-
-int
-glusterfs_update_mux_pid(dict_t *dict, gf_volfile_t *volfile_obj)
-{
-    char *file = NULL;
-    int ret = -1;
-
-    GF_VALIDATE_OR_GOTO("graph", dict, out);
-    GF_VALIDATE_OR_GOTO("graph", volfile_obj, out);
-
-    ret = dict_get_str(dict, "pidfile", &file);
-    if (ret < 0) {
-        gf_msg("mgmt", GF_LOG_ERROR, EINVAL, LG_MSG_GRAPH_SETUP_FAILED,
-               "Failed to get pidfile from dict for  volfile_id=%s",
-               volfile_obj->vol_id);
-    }
-
-    ret = glusterfs_svc_mux_pidfile_update(volfile_obj, file, getpid());
-    if (ret < 0) {
-        ret = -1;
-        gf_msg("mgmt", GF_LOG_ERROR, EINVAL, LG_MSG_GRAPH_SETUP_FAILED,
-               "Failed to update "
-               "the pidfile for volfile_id=%s",
-               volfile_obj->vol_id);
-
-        goto out;
-    }
-
-    if (ret == 1)
-        gf_msg("mgmt", GF_LOG_INFO, 0, LG_MSG_GRAPH_ATTACH_PID_FILE_UPDATED,
-               "PID %d updated in pidfile=%s", getpid(), file);
-    ret = 0;
-out:
-    return ret;
-}
-int
 glusterfs_process_svc_attach_volfp(glusterfs_ctx_t *ctx, FILE *fp,
-                                   char *volfile_id, char *checksum,
-                                   dict_t *dict)
+                                   char *volfile_id, char *checksum)
 {
     glusterfs_graph_t *graph = NULL;
     glusterfs_graph_t *parent_graph = NULL;
@@ -1749,25 +1615,18 @@ glusterfs_process_svc_attach_volfp(glusterfs_ctx_t *ctx, FILE *fp,
         ret = -1;
         goto out;
     }
-    volfile_obj->pidfp = NULL;
-    snprintf(volfile_obj->vol_id, sizeof(volfile_obj->vol_id), "%s",
-             volfile_id);
-
-    if (strcmp(ctx->cmd_args.process_name, "glustershd") == 0) {
-        ret = glusterfs_update_mux_pid(dict, volfile_obj);
-        if (ret == -1) {
-            goto out;
-        }
-    }
 
     graph->used = 1;
     parent_graph->id++;
     list_add(&graph->list, &ctx->graphs);
     INIT_LIST_HEAD(&volfile_obj->volfile_list);
     volfile_obj->graph = graph;
+    snprintf(volfile_obj->vol_id, sizeof(volfile_obj->vol_id), "%s",
+             volfile_id);
     memcpy(volfile_obj->volfile_checksum, checksum,
            sizeof(volfile_obj->volfile_checksum));
     list_add_tail(&volfile_obj->volfile_list, &ctx->volfile_list);
+
     gf_log_dump_graph(fp, graph);
     graph = NULL;
 
@@ -1795,8 +1654,7 @@ out:
 
 int
 glusterfs_mux_volfile_reconfigure(FILE *newvolfile_fp, glusterfs_ctx_t *ctx,
-                                  gf_volfile_t *volfile_obj, char *checksum,
-                                  dict_t *dict)
+                                  gf_volfile_t *volfile_obj, char *checksum)
 {
     glusterfs_graph_t *oldvolfile_graph = NULL;
     glusterfs_graph_t *newvolfile_graph = NULL;
@@ -1845,7 +1703,7 @@ glusterfs_mux_volfile_reconfigure(FILE *newvolfile_fp, glusterfs_ctx_t *ctx,
         }
         volfile_obj = NULL;
         ret = glusterfs_process_svc_attach_volfp(ctx, newvolfile_fp, vol_id,
-                                                 checksum, dict);
+                                                 checksum);
         goto out;
     }
 
diff --git a/rpc/xdr/src/glusterd1-xdr.x b/rpc/xdr/src/glusterd1-xdr.x
index 02ebec2..9b36d34 100644
--- a/rpc/xdr/src/glusterd1-xdr.x
+++ b/rpc/xdr/src/glusterd1-xdr.x
@@ -132,7 +132,6 @@ struct gd1_mgmt_brick_op_req {
         string  name<>;
         int     op;
         opaque  input<>;
-        opaque  dict<>;
 } ;
 
 struct gd1_mgmt_brick_op_rsp {
diff --git a/xlators/mgmt/glusterd/src/glusterd-handler.c b/xlators/mgmt/glusterd/src/glusterd-handler.c
index 94e1be5..ac788a0 100644
--- a/xlators/mgmt/glusterd/src/glusterd-handler.c
+++ b/xlators/mgmt/glusterd/src/glusterd-handler.c
@@ -5423,8 +5423,6 @@ glusterd_print_client_details(FILE *fp, dict_t *dict,
 
     brick_req->op = GLUSTERD_BRICK_STATUS;
     brick_req->name = "";
-    brick_req->dict.dict_val = NULL;
-    brick_req->dict.dict_len = 0;
 
     ret = dict_set_strn(dict, "brick-name", SLEN("brick-name"),
                         brickinfo->path);
diff --git a/xlators/mgmt/glusterd/src/glusterd-handshake.c b/xlators/mgmt/glusterd/src/glusterd-handshake.c
index 86dec82..1ba58c3 100644
--- a/xlators/mgmt/glusterd/src/glusterd-handshake.c
+++ b/xlators/mgmt/glusterd/src/glusterd-handshake.c
@@ -203,7 +203,7 @@ out:
 
 size_t
 build_volfile_path(char *volume_id, char *path, size_t path_len,
-                   char *trusted_str, dict_t *dict)
+                   char *trusted_str)
 {
     struct stat stbuf = {
         0,
@@ -340,19 +340,11 @@ build_volfile_path(char *volume_id, char *path, size_t path_len,
 
         ret = glusterd_volinfo_find(volid_ptr, &volinfo);
         if (ret == -1) {
-            gf_msg(this->name, GF_LOG_ERROR, 0, GD_MSG_VOLINFO_GET_FAIL,
-                   "Couldn't find volinfo for volid=%s", volid_ptr);
+            gf_log(this->name, GF_LOG_ERROR, "Couldn't find volinfo");
             goto out;
         }
 
         glusterd_svc_build_shd_volfile_path(volinfo, path, path_len);
-
-        ret = glusterd_svc_set_shd_pidfile(volinfo, dict);
-        if (ret == -1) {
-            gf_msg(this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED,
-                   "Couldn't set pidfile in dict for volid=%s", volid_ptr);
-            goto out;
-        }
         ret = 0;
         goto out;
     }
@@ -927,7 +919,6 @@ __server_getspec(rpcsvc_request_t *req)
     char addrstr[RPCSVC_PEER_STRLEN] = {0};
     peer_info_t *peerinfo = NULL;
     xlator_t *this = NULL;
-    dict_t *dict = NULL;
 
     this = THIS;
     GF_ASSERT(this);
@@ -980,12 +971,6 @@ __server_getspec(rpcsvc_request_t *req)
         goto fail;
     }
 
-    dict = dict_new();
-    if (!dict) {
-        ret = -ENOMEM;
-        goto fail;
-    }
-
     trans = req->trans;
     /* addrstr will be empty for cli socket connections */
     ret = rpcsvc_transport_peername(trans, (char *)&addrstr, sizeof(addrstr));
@@ -1004,26 +989,12 @@ __server_getspec(rpcsvc_request_t *req)
      */
     if (strlen(addrstr) == 0 || gf_is_local_addr(addrstr)) {
         ret = build_volfile_path(volume, filename, sizeof(filename),
-                                 TRUSTED_PREFIX, dict);
+                                 TRUSTED_PREFIX);
     } else {
-        ret = build_volfile_path(volume, filename, sizeof(filename), NULL,
-                                 dict);
+        ret = build_volfile_path(volume, filename, sizeof(filename), NULL);
     }
 
     if (ret == 0) {
-        if (dict->count > 0) {
-            ret = dict_allocate_and_serialize(dict, &rsp.xdata.xdata_val,
-                                              &rsp.xdata.xdata_len);
-            if (ret) {
-                gf_msg(this->name, GF_LOG_ERROR, 0,
-                       GD_MSG_DICT_SERL_LENGTH_GET_FAIL,
-                       "Failed to serialize dict "
-                       "to request buffer");
-                goto fail;
-            }
-            dict->extra_free = rsp.xdata.xdata_val;
-        }
-
         /* to allocate the proper buffer to hold the file data */
         ret = sys_stat(filename, &stbuf);
         if (ret < 0) {
@@ -1065,6 +1036,7 @@ __server_getspec(rpcsvc_request_t *req)
             goto fail;
         }
     }
+
     /* convert to XDR */
 fail:
     if (spec_fd >= 0)
@@ -1084,10 +1056,6 @@ fail:
                           (xdrproc_t)xdr_gf_getspec_rsp);
     free(args.key);  // malloced by xdr
     free(rsp.spec);
-
-    if (dict)
-        dict_unref(dict);
-
     if (args.xdata.xdata_val)
         free(args.xdata.xdata_val);
 
diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.c b/xlators/mgmt/glusterd/src/glusterd-op-sm.c
index 454877b..9ea695e 100644
--- a/xlators/mgmt/glusterd/src/glusterd-op-sm.c
+++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.c
@@ -655,8 +655,6 @@ glusterd_brick_op_build_payload(glusterd_op_t op,
             break;
     }
 
-    brick_req->dict.dict_len = 0;
-    brick_req->dict.dict_val = NULL;
     ret = dict_allocate_and_serialize(dict, &brick_req->input.input_val,
                                       &brick_req->input.input_len);
     if (ret)
@@ -725,8 +723,6 @@ glusterd_node_op_build_payload(glusterd_op_t op, gd1_mgmt_brick_op_req **req,
             goto out;
     }
 
-    brick_req->dict.dict_len = 0;
-    brick_req->dict.dict_val = NULL;
     ret = dict_allocate_and_serialize(dict, &brick_req->input.input_val,
                                       &brick_req->input.input_len);
 
diff --git a/xlators/mgmt/glusterd/src/glusterd-shd-svc-helper.c b/xlators/mgmt/glusterd/src/glusterd-shd-svc-helper.c
index 5661e39..57ceda9 100644
--- a/xlators/mgmt/glusterd/src/glusterd-shd-svc-helper.c
+++ b/xlators/mgmt/glusterd/src/glusterd-shd-svc-helper.c
@@ -126,28 +126,3 @@ glusterd_shd_svcproc_cleanup(glusterd_shdsvc_t *shd)
 out:
     return;
 }
-
-int
-glusterd_svc_set_shd_pidfile(glusterd_volinfo_t *volinfo, dict_t *dict)
-{
-    int ret = -1;
-    glusterd_svc_t *svc = NULL;
-    xlator_t *this = NULL;
-
-    this = THIS;
-    GF_VALIDATE_OR_GOTO("glusterd", this, out);
-    GF_VALIDATE_OR_GOTO(this->name, volinfo, out);
-    GF_VALIDATE_OR_GOTO(this->name, dict, out);
-
-    svc = &(volinfo->shd.svc);
-
-    ret = dict_set_dynstr_with_alloc(dict, "pidfile", svc->proc.pidfile);
-    if (ret) {
-        gf_msg(this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED,
-               "Failed to set pidfile %s in dict", svc->proc.pidfile);
-        goto out;
-    }
-    ret = 0;
-out:
-    return ret;
-}
diff --git a/xlators/mgmt/glusterd/src/glusterd-shd-svc-helper.h b/xlators/mgmt/glusterd/src/glusterd-shd-svc-helper.h
index 1f0984b..59466ec 100644
--- a/xlators/mgmt/glusterd/src/glusterd-shd-svc-helper.h
+++ b/xlators/mgmt/glusterd/src/glusterd-shd-svc-helper.h
@@ -36,7 +36,4 @@ glusterd_recover_shd_attach_failure(glusterd_volinfo_t *volinfo,
 int
 glusterd_shdsvc_create_volfile(glusterd_volinfo_t *volinfo);
 
-int
-glusterd_svc_set_shd_pidfile(glusterd_volinfo_t *volinfo, dict_t *dict);
-
 #endif
diff --git a/xlators/mgmt/glusterd/src/glusterd-shd-svc.c b/xlators/mgmt/glusterd/src/glusterd-shd-svc.c
index 590169f..8ad90a9 100644
--- a/xlators/mgmt/glusterd/src/glusterd-shd-svc.c
+++ b/xlators/mgmt/glusterd/src/glusterd-shd-svc.c
@@ -258,20 +258,14 @@ glusterd_shdsvc_manager(glusterd_svc_t *svc, void *data, int flags)
     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);
-    volinfo = data;
     GF_VALIDATE_OR_GOTO("glusterd", volinfo, out);
 
     if (volinfo)
         glusterd_volinfo_ref(volinfo);
 
-    if (volinfo->is_snap_volume) {
-        /* healing of a snap volume is not supported yet*/
-        ret = 0;
-        goto out;
-    }
-
     while (conf->restart_shd) {
         synclock_unlock(&conf->big_lock);
         sleep(2);
diff --git a/xlators/mgmt/glusterd/src/glusterd-svc-helper.c b/xlators/mgmt/glusterd/src/glusterd-svc-helper.c
index e106111..400826f 100644
--- a/xlators/mgmt/glusterd/src/glusterd-svc-helper.c
+++ b/xlators/mgmt/glusterd/src/glusterd-svc-helper.c
@@ -519,7 +519,7 @@ glusterd_shd_svc_mux_init(glusterd_volinfo_t *volinfo, glusterd_svc_t *svc)
                 /* Take first entry from the process */
                 parent_svc = cds_list_entry(mux_proc->svcs.next, glusterd_svc_t,
                                             mux_svc);
-                glusterd_copy_file(parent_svc->proc.pidfile, svc->proc.pidfile);
+                sys_link(parent_svc->proc.pidfile, svc->proc.pidfile);
                 mux_conn = &parent_svc->conn;
                 if (volinfo)
                     volinfo->shd.attached = _gf_true;
@@ -623,9 +623,12 @@ glusterd_svc_attach_cbk(struct rpc_req *req, struct iovec *iov, int count,
     glusterd_volinfo_t *volinfo = NULL;
     glusterd_shdsvc_t *shd = NULL;
     glusterd_svc_t *svc = frame->cookie;
+    glusterd_svc_t *parent_svc = NULL;
+    glusterd_svc_proc_t *mux_proc = NULL;
     glusterd_conf_t *conf = NULL;
     int *flag = (int *)frame->local;
     xlator_t *this = THIS;
+    int pid = -1;
     int ret = -1;
     gf_getspec_rsp rsp = {
         0,
@@ -676,7 +679,27 @@ glusterd_svc_attach_cbk(struct rpc_req *req, struct iovec *iov, int count,
     }
 
     if (rsp.op_ret == 0) {
-        svc->online = _gf_true;
+        pthread_mutex_lock(&conf->attach_lock);
+        {
+            if (!strcmp(svc->name, "glustershd")) {
+                mux_proc = svc->svc_proc;
+                if (mux_proc &&
+                    !gf_is_service_running(svc->proc.pidfile, &pid)) {
+                    /*
+                     * When svc's are restarting, there is a chance that the
+                     * attached svc might not have updated it's pid. Because
+                     * it was at connection stage. So in that case, we need
+                     * to retry the pid file copy.
+                     */
+                    parent_svc = cds_list_entry(mux_proc->svcs.next,
+                                                glusterd_svc_t, mux_svc);
+                    if (parent_svc)
+                        sys_link(parent_svc->proc.pidfile, svc->proc.pidfile);
+                }
+            }
+            svc->online = _gf_true;
+        }
+        pthread_mutex_unlock(&conf->attach_lock);
         gf_msg(this->name, GF_LOG_INFO, 0, GD_MSG_SVC_ATTACH_FAIL,
                "svc %s of volume %s attached successfully to pid %d", svc->name,
                volinfo->volname, glusterd_proc_get_pid(&svc->proc));
@@ -703,7 +726,7 @@ out:
 
 extern size_t
 build_volfile_path(char *volume_id, char *path, size_t path_len,
-                   char *trusted_str, dict_t *dict);
+                   char *trusted_str);
 
 int
 __glusterd_send_svc_configure_req(glusterd_svc_t *svc, int flags,
@@ -728,7 +751,6 @@ __glusterd_send_svc_configure_req(glusterd_svc_t *svc, int flags,
     ssize_t req_size = 0;
     call_frame_t *frame = NULL;
     gd1_mgmt_brick_op_req brick_req;
-    dict_t *dict = NULL;
     void *req = &brick_req;
     void *errlbl = &&err;
     struct rpc_clnt_connection *conn;
@@ -754,8 +776,6 @@ __glusterd_send_svc_configure_req(glusterd_svc_t *svc, int flags,
     brick_req.name = volfile_id;
     brick_req.input.input_val = NULL;
     brick_req.input.input_len = 0;
-    brick_req.dict.dict_val = NULL;
-    brick_req.dict.dict_len = 0;
 
     frame = create_frame(this, this->ctx->pool);
     if (!frame) {
@@ -763,13 +783,7 @@ __glusterd_send_svc_configure_req(glusterd_svc_t *svc, int flags,
     }
 
     if (op == GLUSTERD_SVC_ATTACH) {
-        dict = dict_new();
-        if (!dict) {
-            ret = -ENOMEM;
-            goto *errlbl;
-        }
-
-        (void)build_volfile_path(volfile_id, path, sizeof(path), NULL, dict);
+        (void)build_volfile_path(volfile_id, path, sizeof(path), NULL);
 
         ret = sys_stat(path, &stbuf);
         if (ret < 0) {
@@ -804,18 +818,6 @@ __glusterd_send_svc_configure_req(glusterd_svc_t *svc, int flags,
             ret = -EIO;
             goto *errlbl;
         }
-        if (dict->count > 0) {
-            ret = dict_allocate_and_serialize(dict, &brick_req.dict.dict_val,
-                                              &brick_req.dict.dict_len);
-            if (ret) {
-                gf_msg(this->name, GF_LOG_ERROR, 0,
-                       GD_MSG_DICT_SERL_LENGTH_GET_FAIL,
-                       "Failed to serialize dict "
-                       "to request buffer");
-                goto *errlbl;
-            }
-            dict->extra_free = brick_req.dict.dict_val;
-        }
 
         frame->cookie = svc;
         frame->local = GF_CALLOC(1, sizeof(int), gf_gld_mt_int);
@@ -860,8 +862,6 @@ __glusterd_send_svc_configure_req(glusterd_svc_t *svc, int flags,
     GF_ATOMIC_INC(conf->blockers);
     ret = rpc_clnt_submit(rpc, &gd_brick_prog, op, cbkfn, &iov, 1, NULL, 0,
                           iobref, frame, NULL, 0, NULL, 0, NULL);
-    if (dict)
-        dict_unref(dict);
     GF_FREE(volfile_content);
     if (spec_fd >= 0)
         sys_close(spec_fd);
@@ -874,9 +874,6 @@ maybe_free_iobuf:
         iobuf_unref(iobuf);
     }
 err:
-    if (dict)
-        dict_unref(dict);
-
     GF_FREE(volfile_content);
     if (spec_fd >= 0)
         sys_close(spec_fd);
diff --git a/xlators/mgmt/glusterd/src/glusterd-syncop.c b/xlators/mgmt/glusterd/src/glusterd-syncop.c
index a8098df..618d8bc 100644
--- a/xlators/mgmt/glusterd/src/glusterd-syncop.c
+++ b/xlators/mgmt/glusterd/src/glusterd-syncop.c
@@ -143,8 +143,6 @@ gd_brick_op_req_free(gd1_mgmt_brick_op_req *req)
     if (!req)
         return;
 
-    if (req->dict.dict_val)
-        GF_FREE(req->dict.dict_val);
     GF_FREE(req->input.input_val);
     GF_FREE(req);
 }
diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c
index 3bdfd49..4525ec7 100644
--- a/xlators/mgmt/glusterd/src/glusterd-utils.c
+++ b/xlators/mgmt/glusterd/src/glusterd-utils.c
@@ -5914,8 +5914,6 @@ send_attach_req(xlator_t *this, struct rpc_clnt *rpc, char *path,
     brick_req.name = path;
     brick_req.input.input_val = NULL;
     brick_req.input.input_len = 0;
-    brick_req.dict.dict_val = NULL;
-    brick_req.dict.dict_len = 0;
 
     req_size = xdr_sizeof((xdrproc_t)xdr_gd1_mgmt_brick_op_req, req);
     iobuf = iobuf_get2(rpc->ctx->iobuf_pool, req_size);
@@ -5979,7 +5977,7 @@ err:
 
 extern size_t
 build_volfile_path(char *volume_id, char *path, size_t path_len,
-                   char *trusted_str, dict_t *dict);
+                   char *trusted_str);
 
 static int
 attach_brick(xlator_t *this, glusterd_brickinfo_t *brickinfo,
@@ -6024,7 +6022,7 @@ attach_brick(xlator_t *this, glusterd_brickinfo_t *brickinfo,
         goto out;
     }
 
-    (void)build_volfile_path(full_id, path, sizeof(path), NULL, NULL);
+    (void)build_volfile_path(full_id, path, sizeof(path), NULL);
 
     for (tries = 15; tries > 0; --tries) {
         rpc = rpc_clnt_ref(other_brick->rpc);
-- 
1.8.3.1