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>

4 files changed, 72 insertions, 1 deletions

diff --git a/rpc/rpc-lib/src/protocol-common.h b/rpc/rpc-lib/src/protocol-common.h
index 41197044b..b0918e437 100644
--- a/rpc/rpc-lib/src/protocol-common.h
+++ b/rpc/rpc-lib/src/protocol-common.h
@@ -206,6 +206,7 @@ enum gluster_cli_procnum {
         GLUSTER_CLI_MOUNT,
         GLUSTER_CLI_UMOUNT,
         GLUSTER_CLI_HEAL_VOLUME,
+        GLUSTER_CLI_STATEDUMP_VOLUME,
         GLUSTER_CLI_MAXVALUE,
 };
 
diff --git a/rpc/xdr/src/cli1-xdr.c b/rpc/xdr/src/cli1-xdr.c
index 7a1c6c918..8e2adc51c 100644
--- a/rpc/xdr/src/cli1-xdr.c
+++ b/rpc/xdr/src/cli1-xdr.c
@@ -1099,3 +1099,37 @@ xdr_gf1_cli_heal_vol_rsp (XDR *xdrs, gf1_cli_heal_vol_rsp *objp)
 		 return FALSE;
 	return TRUE;
 }
+
+bool_t
+xdr_gf1_cli_statedump_vol_req (XDR *xdrs, gf1_cli_statedump_vol_req *objp)
+{
+	register int32_t *buf;
+        buf = NULL;
+
+	 if (!xdr_string (xdrs, &objp->volname, ~0))
+		 return FALSE;
+	 if (!xdr_string (xdrs, &objp->options, ~0))
+		 return FALSE;
+	 if (!xdr_int (xdrs, &objp->option_cnt))
+		 return FALSE;
+	return TRUE;
+}
+
+bool_t
+xdr_gf1_cli_statedump_vol_rsp (XDR *xdrs, gf1_cli_statedump_vol_rsp *objp)
+{
+	register int32_t *buf;
+        buf = NULL;
+
+	 if (!xdr_int (xdrs, &objp->op_ret))
+		 return FALSE;
+	 if (!xdr_int (xdrs, &objp->op_errno))
+		 return FALSE;
+	 if (!xdr_string (xdrs, &objp->volname, ~0))
+		 return FALSE;
+	 if (!xdr_string (xdrs, &objp->op_errstr, ~0))
+		 return FALSE;
+	 if (!xdr_bytes (xdrs, (char **)&objp->dict.dict_val, (u_int *) &objp->dict.dict_len, ~0))
+		 return FALSE;
+	return TRUE;
+}
diff --git a/rpc/xdr/src/cli1-xdr.h b/rpc/xdr/src/cli1-xdr.h
index 436bf986d..56a5f4802 100644
--- a/rpc/xdr/src/cli1-xdr.h
+++ b/rpc/xdr/src/cli1-xdr.h
@@ -632,6 +632,25 @@ struct gf1_cli_heal_vol_rsp {
 };
 typedef struct gf1_cli_heal_vol_rsp gf1_cli_heal_vol_rsp;
 
+struct gf1_cli_statedump_vol_req {
+	char *volname;
+	char *options;
+	int option_cnt;
+};
+typedef struct gf1_cli_statedump_vol_req gf1_cli_statedump_vol_req;
+
+struct gf1_cli_statedump_vol_rsp {
+	int op_ret;
+	int op_errno;
+	char *volname;
+	char *op_errstr;
+	struct {
+		u_int dict_len;
+		char *dict_val;
+	} dict;
+};
+typedef struct gf1_cli_statedump_vol_rsp gf1_cli_statedump_vol_rsp;
+
 /* the xdr functions */
 
 #if defined(__STDC__) || defined(__cplusplus)
@@ -707,6 +726,8 @@ extern  bool_t xdr_gf1_cli_umount_req (XDR *, gf1_cli_umount_req*);
 extern  bool_t xdr_gf1_cli_umount_rsp (XDR *, gf1_cli_umount_rsp*);
 extern  bool_t xdr_gf1_cli_heal_vol_req (XDR *, gf1_cli_heal_vol_req*);
 extern  bool_t xdr_gf1_cli_heal_vol_rsp (XDR *, gf1_cli_heal_vol_rsp*);
+extern  bool_t xdr_gf1_cli_statedump_vol_req (XDR *, gf1_cli_statedump_vol_req*);
+extern  bool_t xdr_gf1_cli_statedump_vol_rsp (XDR *, gf1_cli_statedump_vol_rsp*);
 
 #else /* K&R C */
 extern bool_t xdr_gf_cli_defrag_type ();
@@ -781,6 +802,8 @@ extern bool_t xdr_gf1_cli_umount_req ();
 extern bool_t xdr_gf1_cli_umount_rsp ();
 extern bool_t xdr_gf1_cli_heal_vol_req ();
 extern bool_t xdr_gf1_cli_heal_vol_rsp ();
+extern bool_t xdr_gf1_cli_statedump_vol_req ();
+extern bool_t xdr_gf1_cli_statedump_vol_rsp ();
 
 #endif /* K&R C */
 
diff --git a/rpc/xdr/src/cli1-xdr.x b/rpc/xdr/src/cli1-xdr.x
index 9a1f77c0e..5ff7aa3e9 100644
--- a/rpc/xdr/src/cli1-xdr.x
+++ b/rpc/xdr/src/cli1-xdr.x
@@ -466,4 +466,17 @@ struct gf1_cli_heal_vol_rsp {
        string  volname<>;
        string op_errstr<>;
        opaque  dict<>;
-}  ;
+};
+struct gf1_cli_statedump_vol_req {
+        string  volname<>;
+        string  options<>;
+        int     option_cnt;
+};
+
+struct gf1_cli_statedump_vol_rsp {
+        int     op_ret;
+        int     op_errno;
+        string  volname<>;
+        string  op_errstr<>;
+        opaque  dict<>;
+};