cli/tiering: Enhance cli output for tiering

        back port of http://review.gluster.org/10284

Fix for handling cli output for attach-tier and
detach-tier

>Change-Id: I4d17f4b09612754fe1b8cec6c2e14927029b9678
>BUG: 1211562
>Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
>Reviewed-on: http://review.gluster.org/10284
>Reviewed-by: Dan Lambright <dlambrig@redhat.com>
>Tested-by: Gluster Build System <jenkins@build.gluster.com>
>Tested-by: NetBSD Build System
>Reviewed-by: Vijay Bellur <vbellur@redhat.com>

Change-Id: Ic30c8f0a104d89bf98f5d0069937a34674ee3f2d
BUG: 1220052
Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
Reviewed-on: http://review.gluster.org/10713
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

9 files changed, 394 insertions, 20 deletions

diff --git a/cli/src/cli-cmd-parser.c b/cli/src/cli-cmd-parser.c
index 310c5f06033..2ca5948d552 100644
--- a/cli/src/cli-cmd-parser.c
+++ b/cli/src/cli-cmd-parser.c
@@ -1696,7 +1696,7 @@ cli_cmd_volume_detach_tier_parse (const char **words, int wordcount,
                 else
                         command = GF_OP_CMD_DETACH_COMMIT;
         } else if (!strcmp(word, "stop"))
-                command = GF_DEFRAG_CMD_STOP_DETACH_TIER;
+                command = GF_OP_CMD_STOP_DETACH_TIER;
         else if (!strcmp(word, "status"))
                 command = GF_DEFRAG_CMD_STATUS;
         else
diff --git a/cli/src/cli-cmd-volume.c b/cli/src/cli-cmd-volume.c
index 7b2fb079e50..ecd838d52c0 100644
--- a/cli/src/cli-cmd-volume.c
+++ b/cli/src/cli-cmd-volume.c
@@ -939,7 +939,7 @@ cli_cmd_volume_detach_tier_cbk (struct cli_state *state,
         if (ret)
                 goto out;
 
-        ret = dict_set_int32 (options, "count", 1);
+        ret = dict_set_int32 (options, "count", 0);
         if (ret)
                 goto out;
 
diff --git a/cli/src/cli-rpc-ops.c b/cli/src/cli-rpc-ops.c
index 932fe5f8cb7..ce6f4672d92 100644
--- a/cli/src/cli-rpc-ops.c
+++ b/cli/src/cli-rpc-ops.c
@@ -2028,6 +2028,302 @@ out:
 }
 
 int
+gf_cli_attach_tier_cbk (struct rpc_req *req, struct iovec *iov,
+                             int count, void *myframe)
+{
+        gf_cli_rsp                  rsp   = {0,};
+        int                         ret   = -1;
+        char                        msg[1024] = {0,};
+
+        if (-1 == req->rpc_status) {
+                goto out;
+        }
+
+        ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gf_cli_rsp);
+        if (ret < 0) {
+                gf_log (((call_frame_t *) myframe)->this->name, GF_LOG_ERROR,
+                        "Failed to decode xdr response");
+                goto out;
+        }
+
+
+        gf_log ("cli", GF_LOG_INFO, "Received resp to attach tier");
+
+        if (rsp.op_ret && strcmp (rsp.op_errstr, ""))
+                snprintf (msg, sizeof (msg), "%s", rsp.op_errstr);
+        else
+                snprintf (msg, sizeof (msg), "Attach tier %s",
+                          (rsp.op_ret) ? "unsuccessful" : "successful");
+
+        if (global_state->mode & GLUSTER_MODE_XML) {
+                ret = cli_xml_output_str ("volAttachTier", msg, rsp.op_ret,
+                                          rsp.op_errno, rsp.op_errstr);
+                if (ret)
+                        gf_log ("cli", GF_LOG_ERROR,
+                                "Error outputting to xml");
+                goto out;
+        }
+
+        if (rsp.op_ret)
+                cli_err ("volume attach-tier: failed: %s", msg);
+        else
+                cli_out ("volume attach-tier: success");
+        ret = rsp.op_ret;
+
+out:
+        cli_cmd_broadcast_response (ret);
+        free (rsp.dict.dict_val);
+        free (rsp.op_errstr);
+        return ret;
+}
+
+int
+gf_cli_detach_tier_cbk (struct rpc_req *req, struct iovec *iov,
+                             int count, void *myframe)
+{
+
+        gf_cli_rsp                      rsp   = {0,};
+        int                             ret   = -1;
+        char                            msg[1024] = {0,};
+        gf1_op_commands                 cmd = GF_OP_CMD_NONE;
+        char                           *cmd_str = "unknown";
+        cli_local_t                    *local = NULL;
+        call_frame_t                   *frame = NULL;
+        char                           *task_id_str = NULL;
+        dict_t                         *rsp_dict = NULL;
+
+        if (-1 == req->rpc_status) {
+                goto out;
+        }
+
+        frame = myframe;
+        local = frame->local;
+
+        ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gf_cli_rsp);
+        if (ret < 0) {
+                gf_log (frame->this->name, GF_LOG_ERROR,
+                        "Failed to decode xdr response");
+                goto out;
+        }
+
+        ret = dict_get_int32 (local->dict, "command", (int32_t *)&cmd);
+        if (ret) {
+                 gf_log ("", GF_LOG_ERROR, "failed to get command");
+                 goto out;
+        }
+
+        if (rsp.dict.dict_len) {
+                rsp_dict = dict_new ();
+                if (!rsp_dict) {
+                        ret = -1;
+                        goto out;
+                }
+
+                ret = dict_unserialize (rsp.dict.dict_val, rsp.dict.dict_len,
+                                        &rsp_dict);
+                if (ret) {
+                        gf_log ("cli", GF_LOG_ERROR,
+                                "Failed to unserialize rsp_dict");
+                        goto out;
+                }
+        }
+
+        switch (cmd) {
+        case GF_OP_CMD_DETACH_START:
+                cmd_str = "start";
+
+                ret = dict_get_str (rsp_dict, GF_REMOVE_BRICK_TID_KEY,
+                                    &task_id_str);
+                if (ret) {
+                        gf_log ("cli", GF_LOG_ERROR,
+                                "remove-brick-id is not present in dict");
+                }
+                break;
+        case GF_OP_CMD_DETACH_COMMIT:
+                cmd_str = "commit";
+                break;
+        case GF_OP_CMD_DETACH_COMMIT_FORCE:
+                cmd_str = "commit force";
+                break;
+        default:
+                cmd_str = "unknown";
+                break;
+        }
+
+        gf_log ("cli", GF_LOG_INFO, "Received resp to detach-tier");
+
+        if (rsp.op_ret && strcmp (rsp.op_errstr, ""))
+                snprintf (msg, sizeof (msg), "%s", rsp.op_errstr);
+        else
+                snprintf (msg, sizeof (msg), "Detach tier %s %s", cmd_str,
+                          (rsp.op_ret) ? "unsuccessful" : "successful");
+
+
+        if (global_state->mode & GLUSTER_MODE_XML) {
+                ret = cli_xml_output_vol_remove_brick_detach_tier (
+                                                       _gf_false, rsp_dict,
+                                                       rsp.op_ret, rsp.op_errno,
+                                                       msg, "volDetachTier");
+
+                if (ret)
+                        gf_log ("cli", GF_LOG_ERROR,
+                                "Error outputting to xml");
+                goto out;
+        }
+
+        if (rsp.op_ret) {
+                cli_err ("volume detach-tier %s: failed: %s", cmd_str,
+                         msg);
+        } else {
+                cli_out ("volume detach-tier %s: success", cmd_str);
+                if (GF_OP_CMD_DETACH_START == cmd && task_id_str != NULL)
+                        cli_out ("ID: %s", task_id_str);
+                if (GF_OP_CMD_DETACH_COMMIT == cmd)
+                        cli_out ("Check the detached bricks to ensure all files"
+                                 " are migrated.\nIf files with data are "
+                                 "found on the brick path, copy them via a "
+                                 "gluster mount point before re-purposing the "
+                                 "removed brick. ");
+        }
+
+        ret = rsp.op_ret;
+
+out:
+        cli_cmd_broadcast_response (ret);
+        free (rsp.dict.dict_val);
+        free (rsp.op_errstr);
+
+        return ret;
+}
+
+int
+gf_cli_detach_tier_status_cbk (struct rpc_req *req, struct iovec *iov,
+                                 int count, void *myframe)
+{
+        gf_cli_rsp               rsp     = {0,};
+        int                      ret     = -1;
+        dict_t                  *dict    = NULL;
+        char                     msg[1024] = {0,};
+        int32_t                  command = 0;
+        gf1_op_commands          cmd = GF_OP_CMD_NONE;
+        cli_local_t             *local = NULL;
+        call_frame_t            *frame = NULL;
+        char                    *cmd_str = "unknown";
+
+        if (-1 == req->rpc_status) {
+                goto out;
+        }
+
+        frame = myframe;
+
+        ret = xdr_to_generic (*iov, &rsp,
+                              (xdrproc_t)xdr_gf_cli_rsp);
+        if (ret < 0) {
+                gf_log (frame->this->name, GF_LOG_ERROR,
+                        "Failed to decode xdr response");
+                goto out;
+        }
+
+        if (frame)
+                local = frame->local;
+        ret = dict_get_int32 (local->dict, "command", &command);
+        if (ret)
+                goto out;
+        cmd = command;
+
+        switch (cmd) {
+        case GF_OP_CMD_STOP_DETACH_TIER:
+                cmd_str = "stop";
+                break;
+        case GF_OP_CMD_STATUS:
+                cmd_str = "status";
+                break;
+        default:
+                break;
+        }
+
+        ret = rsp.op_ret;
+        if (rsp.op_ret == -1) {
+                if (strcmp (rsp.op_errstr, ""))
+                        snprintf (msg, sizeof (msg), "volume detach-tier %s: "
+                                  "failed: %s", cmd_str, rsp.op_errstr);
+                else
+                        snprintf (msg, sizeof (msg), "volume detach-tier %s: "
+                                  "failed", cmd_str);
+
+                if (global_state->mode & GLUSTER_MODE_XML)
+                        goto xml_output;
+
+                cli_err ("%s", msg);
+                goto out;
+        }
+
+        if (rsp.dict.dict_len) {
+                /* Unserialize the dictionary */
+                dict  = dict_new ();
+
+                ret = dict_unserialize (rsp.dict.dict_val,
+                                        rsp.dict.dict_len,
+                                        &dict);
+                if (ret < 0) {
+                        strncpy (msg, "failed to unserialize req-buffer to "
+                                 "dictionary", sizeof (msg));
+
+                        if (global_state->mode & GLUSTER_MODE_XML) {
+                                rsp.op_ret = -1;
+                                goto xml_output;
+                        }
+
+                        gf_log ("cli", GF_LOG_ERROR, "%s", msg);
+                        goto out;
+                }
+        }
+xml_output:
+        if (global_state->mode & GLUSTER_MODE_XML) {
+                if (strcmp (rsp.op_errstr, "")) {
+                        ret = cli_xml_output_vol_remove_brick_detach_tier (
+                                                               _gf_true, dict,
+                                                               rsp.op_ret,
+                                                               rsp.op_errno,
+                                                               rsp.op_errstr,
+                                                               "volDetachTier");
+                } else {
+                        ret = cli_xml_output_vol_remove_brick_detach_tier
+                                                               (_gf_true, dict,
+                                                               rsp.op_ret,
+                                                               rsp.op_errno,
+                                                               msg,
+                                                               "volDetachTier");
+                }
+                goto out;
+        }
+
+        ret = gf_cli_print_rebalance_status (dict, GF_TASK_TYPE_REMOVE_BRICK);
+        if (ret) {
+                gf_log ("cli", GF_LOG_ERROR, "Failed to print remove-brick "
+                        "rebalance status");
+                goto out;
+        }
+
+        if ((cmd == GF_OP_CMD_STOP_DETACH_TIER) && (rsp.op_ret == 0)) {
+                cli_out ("'detach-tier' process may be in the middle of a "
+                         "file migration.\nThe process will be fully stopped "
+                         "once the migration of the file is complete.\nPlease "
+                         "check detach-tier process for completion before "
+                         "doing any further brick related tasks on the "
+                         "volume.");
+        }
+
+out:
+        free (rsp.dict.dict_val); /* malloced by xdr */
+        if (dict)
+                dict_unref (dict);
+        cli_cmd_broadcast_response (ret);
+        return ret;
+}
+
+
+int
 gf_cli_add_brick_cbk (struct rpc_req *req, struct iovec *iov,
                              int count, void *myframe)
 {
@@ -2163,15 +2459,19 @@ gf_cli3_remove_brick_status_cbk (struct rpc_req *req, struct iovec *iov,
 xml_output:
         if (global_state->mode & GLUSTER_MODE_XML) {
                 if (strcmp (rsp.op_errstr, "")) {
-                        ret = cli_xml_output_vol_remove_brick (_gf_true, dict,
+                        ret = cli_xml_output_vol_remove_brick_detach_tier (
+                                                               _gf_true, dict,
                                                                rsp.op_ret,
                                                                rsp.op_errno,
-                                                               rsp.op_errstr);
+                                                               rsp.op_errstr,
+                                                               "volRemoveBrick");
                 } else {
-                        ret = cli_xml_output_vol_remove_brick (_gf_true, dict,
+                        ret = cli_xml_output_vol_remove_brick_detach_tier (
+                                                               _gf_true, dict,
                                                                rsp.op_ret,
                                                                rsp.op_errno,
-                                                               msg);
+                                                               msg,
+                                                               "volRemoveBrick");
                 }
                 goto out;
         }
@@ -2282,9 +2582,10 @@ gf_cli_remove_brick_cbk (struct rpc_req *req, struct iovec *iov,
                           (rsp.op_ret) ? "unsuccessful": "successful");
 
         if (global_state->mode & GLUSTER_MODE_XML) {
-                ret = cli_xml_output_vol_remove_brick (_gf_false, rsp_dict,
+                ret = cli_xml_output_vol_remove_brick_detach_tier (
+                                                       _gf_false, rsp_dict,
                                                        rsp.op_ret, rsp.op_errno,
-                                                       msg);
+                                                       msg, "volRemoveBrick");
                 if (ret)
                         gf_log ("cli", GF_LOG_ERROR,
                                 "Error outputting to xml");
@@ -3828,7 +4129,7 @@ gf_cli_attach_tier (call_frame_t *frame, xlator_t *this,
         if (ret)
                 goto out;
 
-        ret = cli_to_glusterd (&req, frame, gf_cli_add_brick_cbk,
+        ret = cli_to_glusterd (&req, frame, gf_cli_attach_tier_cbk,
                                (xdrproc_t) xdr_gf_cli_req, dict,
                                GLUSTER_CLI_ATTACH_TIER, this,
                                cli_rpc_prog, NULL);
@@ -3843,10 +4144,71 @@ int32_t
 gf_cli_detach_tier (call_frame_t *frame, xlator_t *this,
                     void *data)
 {
-        return gf_cli_remove_brick(frame, this, data);
+        gf_cli_req                req =  { {0,} };
+        gf_cli_req                status_req = { {0,} };
+        int                       ret = 0;
+        dict_t                   *dict = NULL;
+        int32_t                   command = 0;
+        char                     *volname = NULL;
+        int32_t                   cmd = 0;
+
+        if (!frame || !this ||  !data) {
+                ret = -1;
+                goto out;
+        }
+
+        dict = data;
+
+        ret = dict_get_str (dict, "volname", &volname);
+        if (ret)
+                goto out;
+
+        ret = dict_get_int32 (dict, "command", &command);
+        if (ret)
+                goto out;
+
+        if ((command != GF_OP_CMD_STATUS) &&
+            (command != GF_DEFRAG_CMD_STOP_DETACH_TIER)) {
+
+
+                ret = cli_to_glusterd (&req, frame, gf_cli_detach_tier_cbk,
+                                       (xdrproc_t) xdr_gf_cli_req, dict,
+                                       GLUSTER_CLI_REMOVE_BRICK, this,
+                                       cli_rpc_prog, NULL);
+        } else {
+                /* Need rebalance status to be sent :-) */
+                if (command == GF_OP_CMD_STATUS)
+                        cmd |= GF_DEFRAG_CMD_STATUS;
+                else
+                        cmd |= GF_DEFRAG_CMD_STOP;
+
+                ret = dict_set_int32 (dict, "rebalance-command", (int32_t) cmd);
+                if (ret) {
+                        gf_log (this->name, GF_LOG_ERROR,
+                                "Failed to set dict");
+                        goto out;
+                }
+
+                ret = cli_to_glusterd (&status_req, frame,
+                                       gf_cli_detach_tier_status_cbk,
+                                       (xdrproc_t) xdr_gf_cli_req, dict,
+                                       GLUSTER_CLI_DEFRAG_VOLUME, this,
+                                       cli_rpc_prog, NULL);
+
+                }
+
+out:
+        gf_log ("cli", GF_LOG_DEBUG, "Returning %d", ret);
+
+        GF_FREE (req.dict.dict_val);
+
+        GF_FREE (status_req.dict.dict_val);
+
+        return ret;
 }
 
 
+
 int32_t
 gf_cli_remove_brick (call_frame_t *frame, xlator_t *this,
                      void *data)
diff --git a/cli/src/cli-xml-output.c b/cli/src/cli-xml-output.c
index f9013ed2726..d41aebc8cad 100644
--- a/cli/src/cli-xml-output.c
+++ b/cli/src/cli-xml-output.c
@@ -3371,8 +3371,10 @@ out:
 }
 
 int
-cli_xml_output_vol_remove_brick (gf_boolean_t status_op, dict_t *dict,
-                                 int op_ret, int op_errno, char *op_errstr)
+cli_xml_output_vol_remove_brick_detach_tier (gf_boolean_t status_op,
+                                             dict_t *dict, int op_ret,
+                                             int op_errno, char *op_errstr,
+                                             const char *op)
 {
 #if (HAVE_LIB_XML)
         int                     ret = -1;
@@ -3388,8 +3390,7 @@ cli_xml_output_vol_remove_brick (gf_boolean_t status_op, dict_t *dict,
         if (ret)
                 goto out;
 
-        /* <volRemoveBrick> */
-        ret = xmlTextWriterStartElement (writer, (xmlChar *)"volRemoveBrick");
+        ret = xmlTextWriterStartElement (writer, (xmlChar *) op);
         XML_RET_CHECK_AND_GOTO (ret, out);
 
         ret = dict_get_str (dict, GF_REMOVE_BRICK_TID_KEY, &task_id_str);
@@ -3407,7 +3408,6 @@ cli_xml_output_vol_remove_brick (gf_boolean_t status_op, dict_t *dict,
                         goto out;
         }
 
-        /* </volRemoveBrick> */
         ret = xmlTextWriterEndElement (writer);
         XML_RET_CHECK_AND_GOTO (ret, out);
 
diff --git a/cli/src/cli.h b/cli/src/cli.h
index 3da58dd22d8..c9283b5b875 100644
--- a/cli/src/cli.h
+++ b/cli/src/cli.h
@@ -403,8 +403,10 @@ cli_xml_output_vol_rebalance (gf_cli_defrag_type op, dict_t *dict, int op_ret,
                               int op_errno, char *op_errstr);
 
 int
-cli_xml_output_vol_remove_brick (gf_boolean_t status_op, dict_t *dict,
-                                 int op_ret, int op_errno, char *op_errstr);
+cli_xml_output_vol_remove_brick_detach_tier (gf_boolean_t status_op,
+                                             dict_t *dict, int op_ret,
+                                             int op_errno, char *op_errstr,
+                                             const char *op);
 
 int
 cli_xml_output_vol_replace_brick (char *op, dict_t *dict, int op_ret,
diff --git a/rpc/xdr/src/cli1-xdr.x b/rpc/xdr/src/cli1-xdr.x
index cdf8e725788..0d5d3cc360c 100644
--- a/rpc/xdr/src/cli1-xdr.x
+++ b/rpc/xdr/src/cli1-xdr.x
@@ -52,7 +52,8 @@ enum gf_bitrot_type {
         GF_OP_CMD_COMMIT_FORCE,
         GF_OP_CMD_DETACH_START,
         GF_OP_CMD_DETACH_COMMIT,
-        GF_OP_CMD_DETACH_COMMIT_FORCE
+        GF_OP_CMD_DETACH_COMMIT_FORCE,
+        GF_OP_CMD_STOP_DETACH_TIER
 };
 
 enum gf_quota_type {
diff --git a/tests/basic/tier/tier.t b/tests/basic/tier/tier.t
index fe15395cf4b..81abc5779ab 100755
--- a/tests/basic/tier/tier.t
+++ b/tests/basic/tier/tier.t
@@ -122,7 +122,7 @@ TEST $CLI volume rebalance $V0 tier status
 
 TEST $CLI volume detach-tier $V0 start
 
-TEST $CLI volume detach-tier $V0 commit
+TEST $CLI volume detach-tier $V0 commit force
 
 EXPECT "0" file_on_slow_tier d1/data.txt
 
diff --git a/xlators/mgmt/glusterd/src/glusterd-brick-ops.c b/xlators/mgmt/glusterd/src/glusterd-brick-ops.c
index cffabfe34e2..6ed65976aea 100644
--- a/xlators/mgmt/glusterd/src/glusterd-brick-ops.c
+++ b/xlators/mgmt/glusterd/src/glusterd-brick-ops.c
@@ -1671,10 +1671,12 @@ glusterd_op_stage_remove_brick (dict_t *dict, char **op_errstr)
         }
 
         case GF_OP_CMD_STOP:
+        case GF_OP_CMD_STOP_DETACH_TIER:
                 ret = 0;
                 break;
 
         case GF_OP_CMD_COMMIT:
+        case GF_OP_CMD_DETACH_COMMIT:
                 if (volinfo->decommission_in_progress) {
                         errstr = gf_strdup ("use 'force' option as migration "
                                             "is in progress");
@@ -1724,7 +1726,6 @@ glusterd_op_stage_remove_brick (dict_t *dict, char **op_errstr)
 
                 break;
 
-        case GF_OP_CMD_DETACH_COMMIT:
         case GF_OP_CMD_DETACH_COMMIT_FORCE:
         case GF_OP_CMD_COMMIT_FORCE:
                 break;
@@ -2014,6 +2015,7 @@ glusterd_op_remove_brick (dict_t *dict, char **op_errstr)
                 goto out;
 
         case GF_OP_CMD_STOP:
+        case GF_OP_CMD_STOP_DETACH_TIER:
         {
                 /* Fall back to the old volume file */
                 cds_list_for_each_entry_safe (brickinfo, tmp, &volinfo->bricks,
diff --git a/xlators/mgmt/glusterd/src/glusterd-rebalance.c b/xlators/mgmt/glusterd/src/glusterd-rebalance.c
index 84d9210a105..48d9a706042 100644
--- a/xlators/mgmt/glusterd/src/glusterd-rebalance.c
+++ b/xlators/mgmt/glusterd/src/glusterd-rebalance.c
@@ -681,6 +681,13 @@ glusterd_op_stage_rebalance (dict_t *dict, char **op_errstr)
                                 goto out;
                         }
                 }
+                if ((strstr(cmd_str, "detach-tier") != NULL) &&
+                    (volinfo->rebal.op != GD_OP_REMOVE_BRICK)) {
+                        snprintf (msg, sizeof(msg), "Detach-tier not started.");
+                        ret = -1;
+                        goto out;
+                }
+
                 break;
         default:
                 break;