cli: Add a cli command to enable/disable barrier

This patch adds a new
 'gluster volume barrier <VOLNAME> {enable|disable}'
cli command. This helps in testing the brick op code path when testing
the barrier xlator.
This patch can be reverted later if not required for end users.
Change-Id: Icd86a2d13e7f276dda1ecbb2593d60638ece7dcd
BUG: 1060002
Signed-off-by: Kaushal M <kaushal@redhat.com>
Reviewed-on: http://review.gluster.org/6958
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/cli/src/cli-cmd-volume.c b/cli/src/cli-cmd-volume.c
index 53c94c68779..83b923e360a 100644
--- a/cli/src/cli-cmd-volume.c
+++ b/cli/src/cli-cmd-volume.c
@@ -2264,6 +2264,60 @@ out:
         return ret;
 }
 
+int
+cli_cmd_volume_barrier_cbk (struct cli_state *state, struct cli_cmd_word *word,
+                            const char **words, int wordcount)
+{
+        int ret = -1;
+        rpc_clnt_procedure_t *proc = NULL;
+        call_frame_t *frame = NULL;
+        dict_t *options = NULL;
+        int sent = 0;
+        int parse_error = 0;
+        cli_local_t *local = NULL;
+
+        frame = create_frame (THIS, THIS->ctx->pool);
+        if (!frame)
+                goto out;
+
+        if (wordcount != 4) {
+                cli_usage_out (word->pattern);
+                parse_error = 1;
+                goto out;
+        }
+
+        options = dict_new();
+        if (!options) {
+                ret = -1;
+                goto out;
+        }
+        ret = dict_set_str(options, "volname", (char *)words[2]);
+        if (ret)
+                goto out;
+
+        ret = dict_set_str (options, "barrier", (char *)words[3]);
+        if (ret)
+                goto out;
+
+        proc = &cli_rpc_prog->proctable[GLUSTER_CLI_BARRIER_VOLUME];
+
+        CLI_LOCAL_INIT (local, words, frame, options);
+
+        if (proc->fn)
+                ret = proc->fn (frame, THIS, options);
+
+out:
+        if (ret) {
+                cli_cmd_sent_status_get (&sent);
+                if ((sent == 0) && (parse_error == 0))
+                        cli_err ("Volume barrier failed");
+        }
+        CLI_STACK_DESTROY (frame);
+        if (options)
+                dict_unref (options);
+
+        return ret;
+}
 struct cli_cmd volume_cmds[] = {
         { "volume info [all|<VOLNAME>]",
           cli_cmd_volume_info_cbk,
@@ -2387,6 +2441,9 @@ struct cli_cmd volume_cmds[] = {
           cli_cmd_volume_clearlocks_cbk,
           "Clear locks held on path"
         },
+        {"volume barrier <VOLNAME> {enable|disable}",
+         cli_cmd_volume_barrier_cbk,
+         "Barrier/unbarrier file operations on a volume"},
 
         { NULL, NULL, NULL }
 };