cli : new volume statedump command

Changes:
        1. Add a new 'volume statedump' command, that performs statedumps of
        all the bricks in the volume and saves them in a specified location.
        2. Add new server option 'server.statedump-path'.
        3. Remove multiple function definitions in glusterd.h

Statedump Information:

The 'volume statedump' command performs statedumps on all the bricks in
a given volume. The syntax of the command is,
        gluster volume statedump <VOLNAME> [type]......

Types include,
        * all
        * mem
        * iobuf
        * callpool
        * priv
        * fd
        * inode
Defaults to 'all' when no type is specified.

The statedump files are created by default in /tmp directory of the
server on which the bricks are present.
This path can be changed by setting the 'server.statedump-path' option.

The statedump files will be named as,
        <brick-name>.<pid of brick process>.dump

Change-Id: I01c0e1a8aad490da818e086d89f292bd2ed06fd4
BUG: 1964
Reviewed-on: http://review.gluster.com/321
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/cli/src/cli-cmd-parser.c b/cli/src/cli-cmd-parser.c
index 6d984680e..d3cb1240f 100644
--- a/cli/src/cli-cmd-parser.c
+++ b/cli/src/cli-cmd-parser.c
@@ -1731,3 +1731,58 @@ cli_cmd_volume_status_parse (const char **words, int wordcount,
 
         return ret;
 }
+
+gf_boolean_t
+cli_cmd_validate_dumpoption (const char *option)
+{
+        char    *opwords[] = {"all", "mem", "iobuf", "callpool", "priv", "fd",
+                              "inode", NULL};
+        char    *w = NULL;
+
+        w = str_getunamb (option, opwords);
+        if (!w) {
+                gf_log ("cli", GF_LOG_DEBUG, "Unknown statedump option  %s",
+                        option);
+                return _gf_false;
+        }
+        return _gf_true;
+}
+
+int
+cli_cmd_volume_statedump_options_parse (const char **words, int wordcount,
+                                        dict_t **options)
+{
+        int     ret = 0;
+        int     i = 0;
+        dict_t  *dict = NULL;
+        int     option_cnt = 0;
+        char    option_str[100] = {0,};
+
+        for (i = 3; i < wordcount; i++, option_cnt++) {
+                if (!cli_cmd_validate_dumpoption (words[i])) {
+                        ret = -1;
+                        goto out;
+                }
+                strncat (option_str, words[i], sizeof (words [i]));
+                strncat (option_str, " ", 1);
+        }
+        dict = dict_new ();
+        if (!dict)
+                goto out;
+
+        ret = dict_set_str (dict, "options", gf_strdup (option_str));
+        if (ret)
+                goto out;
+
+        ret = dict_set_int32 (dict, "option-cnt", option_cnt);
+        if (ret)
+                goto out;
+
+        *options = dict;
+out:
+        if (ret && dict)
+                dict_destroy (dict);
+        if (ret)
+                gf_log ("cli", GF_LOG_ERROR, "Error parsing dumpoptions");
+        return ret;
+}