Infra to indentify process

Problem: currently we can't identify which process is running and
how many instances of it are available.

Fix: name the process when its spawned and send it to the server
and save it in the client_t

The processes that abide by this change from this patch are:
1) fuse mount,
2) rebalance,
3) selfheal,
4) tier,
5) quota,
6) snapshot,
7) brick.
8) gfapi (by default. gfapi.<processname> if processname is found)

Note: fuse gets a process name as native-fuse-client by default.
If the user gives a name for the fuse and spawns it, it will be of
this type --process-name native-fuse-client.<name_specified>.
This can be made use by the process like aux mount done by quota,
geo-rep, etc by adding another option in the aux mount " -o
process-name=gsync_mount"

Updates: #178
Signed-off-by: hari gowtham <hgowtham@redhat.com>
Change-Id: Ie4d02257216839338043737691753bab9a974d5e
Reviewed-on: https://review.gluster.org/17957
Smoke: Gluster Build System <jenkins@build.gluster.org>
Tested-by: hari gowtham <hari.gowtham005@gmail.com>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-by: Aravinda VK <avishwan@redhat.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>

6 files changed, 17 insertions, 1 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-quotad-svc.c b/xlators/mgmt/glusterd/src/glusterd-quotad-svc.c
index e0eb38f494a..ac8694fc440 100644
--- a/xlators/mgmt/glusterd/src/glusterd-quotad-svc.c
+++ b/xlators/mgmt/glusterd/src/glusterd-quotad-svc.c
@@ -122,6 +122,8 @@ glusterd_quotadsvc_start (glusterd_svc_t *svc, int flags)
         dict_t          *cmdline   = NULL;
         char             key[16]   = {0};
         char            *options[] = {
+                                      svc->name,
+                                      "--process-name",
                                       "*replicate*.entry-self-heal=off",
                                       "--xlator-option",
                                       "*replicate*.metadata-self-heal=off",
diff --git a/xlators/mgmt/glusterd/src/glusterd-rebalance.c b/xlators/mgmt/glusterd/src/glusterd-rebalance.c
index 4c24b99d0b8..70b391e4188 100644
--- a/xlators/mgmt/glusterd/src/glusterd-rebalance.c
+++ b/xlators/mgmt/glusterd/src/glusterd-rebalance.c
@@ -289,6 +289,7 @@ glusterd_handle_defrag_start (glusterd_volinfo_t *volinfo, char *op_errstr,
                          "*replicate*.metadata-self-heal=off",
                          "--xlator-option", "*replicate*.entry-self-heal=off",
                          "--xlator-option", "*dht.readdir-optimize=on",
+                         "--process-name", "rebalance",
                          NULL);
 
         if (volinfo->type == GF_CLUSTER_TYPE_TIER) {
diff --git a/xlators/mgmt/glusterd/src/glusterd-shd-svc.c b/xlators/mgmt/glusterd/src/glusterd-shd-svc.c
index e0135ea2be3..8716a0bd10b 100644
--- a/xlators/mgmt/glusterd/src/glusterd-shd-svc.c
+++ b/xlators/mgmt/glusterd/src/glusterd-shd-svc.c
@@ -17,6 +17,7 @@
 #include "glusterd-shd-svc.h"
 #include "glusterd-svc-helper.h"
 
+#define GD_SHD_PROCESS_NAME    "--process-name"
 char *shd_svc_name = "glustershd";
 
 void
@@ -162,6 +163,14 @@ glusterd_shdsvc_start (glusterd_svc_t *svc, int flags)
         /* Pass cmdline arguments as key-value pair. The key is merely
          * a carrier and is not used. Since dictionary follows LIFO the value
          * should be put in reverse order*/
+        ret = dict_set_str (cmdline, "arg4", svc->name);
+        if (ret)
+                goto out;
+
+        ret = dict_set_str (cmdline, "arg3", GD_SHD_PROCESS_NAME);
+        if (ret)
+                goto out;
+
         ret = dict_set_str (cmdline, "arg2", glusterd_uuid_option);
         if (ret)
                 goto out;
diff --git a/xlators/mgmt/glusterd/src/glusterd-snapd-svc.c b/xlators/mgmt/glusterd/src/glusterd-snapd-svc.c
index 59d8fbdfa6a..ea56d8012aa 100644
--- a/xlators/mgmt/glusterd/src/glusterd-snapd-svc.c
+++ b/xlators/mgmt/glusterd/src/glusterd-snapd-svc.c
@@ -297,7 +297,9 @@ glusterd_snapdsvc_start (glusterd_svc_t *svc, int flags)
                          "-p", svc->proc.pidfile,
                          "-l", svc->proc.logfile,
                          "--brick-name", snapd_id,
-                         "-S", svc->conn.sockpath, NULL);
+                         "-S", svc->conn.sockpath,
+                         "--process-name", svc->name,
+                         NULL);
 
         snapd_port = pmap_assign_port (THIS, volinfo->snapd.port, snapd_id);
         volinfo->snapd.port = snapd_port;
diff --git a/xlators/mgmt/glusterd/src/glusterd-tierd-svc.c b/xlators/mgmt/glusterd/src/glusterd-tierd-svc.c
index c75b378140c..bb2cbff6e93 100644
--- a/xlators/mgmt/glusterd/src/glusterd-tierd-svc.c
+++ b/xlators/mgmt/glusterd/src/glusterd-tierd-svc.c
@@ -330,6 +330,7 @@ glusterd_tierdsvc_start (glusterd_svc_t *svc, int flags)
                          "--xlator-option", "*dht.readdir-optimize=on",
                          "--xlator-option",
                          "*tier-dht.xattr-name=trusted.tier.tier-dht",
+                         "--process-name", svc->name,
                          NULL);
 
 
diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c
index ee3498f3e86..9e98225e73e 100644
--- a/xlators/mgmt/glusterd/src/glusterd-utils.c
+++ b/xlators/mgmt/glusterd/src/glusterd-utils.c
@@ -2060,6 +2060,7 @@ retry:
                          "--brick-name", brickinfo->path,
                          "-l", brickinfo->logfile,
                          "--xlator-option", glusterd_uuid,
+                         "--process-name", "brick",
                          NULL);
 
         if (dict_get_str (priv->opts, GLUSTERD_LOCALTIME_LOGGING_KEY,