cli: Add an option to fetch just incremental or cumulative I/0

information

'volume profile info' fetches both cumulative and incremental
I/O statistics. There isn't a way to fetch just cumulative or
incremental statistics.

This change introduces two optional arguments, namely "incremental"
and "cumulative", that can be tacked on to 'volume profile info'.
In other words, the new command format is

volume profile <VOLNAME> {start | info [incremental | cumulative]
| stop} [nfs]

'volume profile info incremental' - fetches incremental stats
'volume profile info cumulative' - fetches cumulative stats
'volume profile info' - fetches incremental and cumulative stats

Change-Id: I5ddb45d990542ea611d23d251efebfec46f472d0
BUG: 1030580
Signed-off-by: Dawit Alemu <dalemu@redhat.com>
Reviewed-on: http://review.gluster.org/6264
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>

1 files changed, 37 insertions, 18 deletions

diff --git a/xlators/debug/io-stats/src/io-stats.c b/xlators/debug/io-stats/src/io-stats.c
index 3ca57753c56..65aeee52bfb 100644
--- a/xlators/debug/io-stats/src/io-stats.c
+++ b/xlators/debug/io-stats/src/io-stats.c
@@ -36,6 +36,7 @@
 #include <stdarg.h>
 #include "defaults.h"
 #include "logging.h"
+#include "cli1-xdr.h"
 
 #define MAX_LIST_MEMBERS 100
 
@@ -917,7 +918,8 @@ ios_dump_args_init (struct ios_dump_args *args, ios_dump_type_t type,
 }
 
 int
-io_stats_dump (xlator_t *this, struct ios_dump_args *args)
+io_stats_dump (xlator_t *this, struct ios_dump_args *args,
+               gf1_cli_stats_op op)
 {
         struct ios_conf         *conf = NULL;
         struct ios_global_stats  cumulative = {0, };
@@ -935,18 +937,30 @@ io_stats_dump (xlator_t *this, struct ios_dump_args *args)
         gettimeofday (&now, NULL);
         LOCK (&conf->lock);
         {
-                cumulative  = conf->cumulative;
-                incremental = conf->incremental;
+                if (op == GF_CLI_STATS_INFO ||
+                    op == GF_CLI_STATS_INFO_CUMULATIVE)
+                        cumulative  = conf->cumulative;
 
-                increment = conf->increment++;
+                if (op == GF_CLI_STATS_INFO ||
+                    op == GF_CLI_STATS_INFO_INCREMENTAL) {
+                        incremental = conf->incremental;
 
-                memset (&conf->incremental, 0, sizeof (conf->incremental));
-                conf->incremental.started_at = now;
+                        increment = conf->increment++;
+
+                        memset (&conf->incremental, 0,
+                                sizeof (conf->incremental));
+                        conf->incremental.started_at = now;
+                }
         }
         UNLOCK (&conf->lock);
 
-        io_stats_dump_global (this, &cumulative, &now, -1, args);
-        io_stats_dump_global (this, &incremental, &now, increment, args);
+        if (op == GF_CLI_STATS_INFO ||
+            op == GF_CLI_STATS_INFO_CUMULATIVE)
+                io_stats_dump_global (this, &cumulative, &now, -1, args);
+
+        if (op == GF_CLI_STATS_INFO ||
+            op == GF_CLI_STATS_INFO_INCREMENTAL)
+                io_stats_dump_global (this, &incremental, &now, increment, args);
 
         return 0;
 }
@@ -2207,7 +2221,7 @@ conditional_dump (dict_t *dict, char *key, data_t *value, void *data)
                 }
                 (void) ios_dump_args_init (&args, IOS_DUMP_TYPE_FILE,
                                            logfp);
-                io_stats_dump (this, &args);
+                io_stats_dump (this, &args, GF_CLI_STATS_INFO);
                 fclose (logfp);
         }
         return 0;
@@ -2773,7 +2787,7 @@ notify (xlator_t *this, int32_t event, void *data, ...)
         struct ios_dump_args args = {0};
         dict_t       *output = NULL;
         dict_t       *dict = NULL;
-        int32_t       top_op = 0;
+        int32_t       op = 0;
         int32_t       list_cnt = 0;
         double        throughput = 0;
         double        time = 0;
@@ -2787,7 +2801,7 @@ notify (xlator_t *this, int32_t event, void *data, ...)
         case GF_EVENT_TRANSLATOR_INFO:
                 ret = dict_get_str_boolean (dict, "clear-stats", _gf_false);
                 if (ret) {
-                         ret = dict_set_int32 (output, "top-op", top_op);
+                        ret = dict_set_int32 (output, "top-op", op);
                         if (ret) {
                                 gf_log (this->name, GF_LOG_ERROR,
                                         "Failed to set top-op in dict");
@@ -2807,15 +2821,15 @@ notify (xlator_t *this, int32_t event, void *data, ...)
                         goto out;
                 }
 
-                ret = dict_get_int32 (dict, "top-op", &top_op);
+                ret = dict_get_int32 (dict, "top-op", &op);
                 if (!ret) {
                         ret = dict_get_int32 (dict, "list-cnt", &list_cnt);
-                        if (top_op > IOS_STATS_TYPE_NONE &&
-                            top_op < IOS_STATS_TYPE_MAX)
+                        if (op > IOS_STATS_TYPE_NONE &&
+                            op < IOS_STATS_TYPE_MAX)
                                 ret = io_stats_dump_stats_to_dict (this, output,
-                                                             top_op, list_cnt);
-                        if (top_op == IOS_STATS_TYPE_READ_THROUGHPUT ||
-                                top_op == IOS_STATS_TYPE_WRITE_THROUGHPUT) {
+                                                             op, list_cnt);
+                        if (op == IOS_STATS_TYPE_READ_THROUGHPUT ||
+                                op == IOS_STATS_TYPE_WRITE_THROUGHPUT) {
                                 ret = dict_get_double (dict, "throughput",
                                                         &throughput);
                                 if (!ret) {
@@ -2836,9 +2850,14 @@ notify (xlator_t *this, int32_t event, void *data, ...)
 
                         }
                 } else {
+                        ret = dict_get_int32 (dict, "info-op", &op);
+                        if (ret || op < GF_CLI_STATS_INFO ||
+                            GF_CLI_STATS_INFO_CUMULATIVE < op)
+                            op = GF_CLI_STATS_INFO;
+
                         (void) ios_dump_args_init (&args, IOS_DUMP_TYPE_DICT,
                                            output);
-                        ret = io_stats_dump (this, &args);
+                        ret = io_stats_dump (this, &args, op);
                 }
                 break;
         default: