tier/shd: create shd volfile for tiering

Currently shd graph will only start if it is replicate
or disperse volume. But in case of tiering, volume type
will be tier. So we need to start shd if any of the cold
or hot is compatible with shd volume.

Back port of>
>Change-Id: Ic689746ac7d2fc6a9eccdabd8518dc9139829de2
>BUG: 1261276
>Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
>Reviewed-on: http://review.gluster.org/11962
>Tested-by: Gluster Build System <jenkins@build.gluster.com>
>Tested-by: NetBSD Build System <jenkins@build.gluster.org>
>Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>

(cherry picked from commit fdff192b918ca9cd237f3f784c627102377e3661)

Change-Id: I236a31e7dcefb3dad64881e0b007144bd826b840
BUG: 1261744
Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
Reviewed-on: http://review.gluster.org/12333
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
Tested-by: Dan Lambright <dlambrig@redhat.com>

1 files changed, 159 insertions, 18 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c
index 2b4ca74ab97..d531ad34752 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volgen.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c
@@ -2829,6 +2829,57 @@ out:
 }
 
 static int
+volgen_graph_build_clients_for_tier_shd (volgen_graph_t *graph,
+                            glusterd_volinfo_t *volinfo,
+                            dict_t *set_dict)
+{
+        int                     ret             = 0;
+        glusterd_volinfo_t     *dup_volinfo     = NULL;
+        gf_boolean_t            is_hot_tier     = _gf_false;
+        gf_boolean_t            is_hot_shd      = _gf_false;
+        gf_boolean_t            is_cold_shd     = _gf_false;
+
+        is_cold_shd = glusterd_is_shd_compatible_type
+                              (volinfo->tier_info.cold_type);
+        is_hot_shd = glusterd_is_shd_compatible_type
+                              (volinfo->tier_info.hot_type);
+
+        if (is_cold_shd && is_hot_shd) {
+                ret = volgen_graph_build_clients (graph, volinfo,
+                                                  set_dict, NULL);
+                return ret;
+        }
+
+        if (is_cold_shd) {
+                ret = glusterd_create_sub_tier_volinfo (volinfo, &dup_volinfo,
+                                                        is_hot_tier,
+                                                        volinfo->volname);
+                if (ret)
+                        goto out;
+                ret = volgen_graph_build_clients (graph, dup_volinfo,
+                                                  set_dict, NULL);
+                if (ret)
+                        goto out;
+        }
+        if (is_hot_shd) {
+                is_hot_tier = _gf_true;
+                ret = glusterd_create_sub_tier_volinfo (volinfo, &dup_volinfo,
+                                                        is_hot_tier,
+                                                        volinfo->volname);
+                if (ret)
+                        goto out;
+                ret = volgen_graph_build_clients (graph, dup_volinfo,
+                                                  set_dict, NULL);
+                if (ret)
+                        goto out;
+       }
+out:
+        if (dup_volinfo)
+                glusterd_volinfo_delete (dup_volinfo);
+        return ret;
+}
+
+static int
 volgen_link_bricks (volgen_graph_t *graph,
                     glusterd_volinfo_t *volinfo, char *xl_type,
                     char *xl_namefmt, size_t child_count,
@@ -2865,7 +2916,7 @@ volgen_link_bricks (volgen_graph_t *graph,
                         break;
         }
 
-        ret = j;
+        ret = j - start_count;
 out:
         return ret;
 }
@@ -3241,16 +3292,25 @@ volgen_graph_build_afr_clusters (volgen_graph_t *graph,
         char            option[32]           = {0};
         int             start_count = 0;
 
-        if (volinfo->tier_info.cur_tier_hot &&
-            volinfo->tier_info.cold_type == GF_CLUSTER_TYPE_REPLICATE)
+        if (volinfo->tier_info.cold_type == GF_CLUSTER_TYPE_REPLICATE)
                 start_count = volinfo->tier_info.cold_brick_count /
                               volinfo->tier_info.cold_replica_count;
-        clusters = volgen_link_bricks_from_list_tail_start (graph, volinfo,
+        if (volinfo->tier_info.cur_tier_hot)
+                clusters = volgen_link_bricks_from_list_head_start (graph,
+                                                volinfo,
                                                 replicate_args[0],
                                                 replicate_args[1],
                                                 volinfo->brick_count,
                                                 volinfo->replica_count,
                                                 start_count);
+        else
+                clusters = volgen_link_bricks_from_list_tail (graph,
+                                                volinfo,
+                                                replicate_args[0],
+                                                replicate_args[1],
+                                                volinfo->brick_count,
+                                                volinfo->replica_count);
+
         if (clusters < 0)
                 goto out;
 
@@ -3477,6 +3537,7 @@ volume_volgen_graph_build_clusters_tier (volgen_graph_t *graph,
         int                st_dist_leaf_count = 0;
         int                st_type = 0;
         int                dist_count = 0;
+        int                start_count = 0;
         char              *decommissioned_children = NULL;
 
         st_brick_count     = volinfo->brick_count;
@@ -3507,6 +3568,10 @@ volume_volgen_graph_build_clusters_tier (volgen_graph_t *graph,
 
         dist_count = volinfo->brick_count / volinfo->dist_leaf_count;
 
+        if (volinfo->tier_info.cold_type == GF_CLUSTER_TYPE_REPLICATE) {
+                start_count = volinfo->tier_info.cold_brick_count /
+                              volinfo->tier_info.cold_replica_count;
+        }
         if (volinfo->dist_leaf_count != 1) {
                 ret = volgen_link_bricks_from_list_head_start
                         (graph, volinfo,
@@ -3514,8 +3579,7 @@ volume_volgen_graph_build_clusters_tier (volgen_graph_t *graph,
                          "%s-replicate-%d",
                          volinfo->brick_count,
                          volinfo->replica_count,
-                         volinfo->tier_info.cold_brick_count/
-                         volinfo->tier_info.cold_replica_count);
+                         start_count);
                 if (ret != -1)
                         volgen_link_bricks_from_list_tail (graph,  volinfo,
                                                            "cluster/distribute",
@@ -4175,6 +4239,9 @@ volgen_get_shd_key (glusterd_volinfo_t *volinfo)
         case GF_CLUSTER_TYPE_DISPERSE:
                 key = "cluster.disperse-self-heal-daemon";
                 break;
+        case GF_CLUSTER_TYPE_TIER:
+                key = "cluster.tier-self-heal-daemon";
+                break;
         default:
                 key = NULL;
                 break;
@@ -4240,16 +4307,10 @@ out:
 }
 
 static int
-build_shd_clusters (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
-                    dict_t *set_dict)
+build_afr_ec_clusters (volgen_graph_t *graph, glusterd_volinfo_t *volinfo)
 {
-        int     ret = 0;
-        int     clusters = -1;
-
-        ret = volgen_graph_build_clients (graph, volinfo, set_dict, NULL);
-        if (ret)
-                goto out;
 
+        int clusters = -1;
         switch (volinfo->type) {
         case GF_CLUSTER_TYPE_REPLICATE:
         case GF_CLUSTER_TYPE_STRIPE_REPLICATE:
@@ -4260,6 +4321,86 @@ build_shd_clusters (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
                 clusters = volgen_graph_build_ec_clusters (graph, volinfo);
                 break;
         }
+        return clusters;
+}
+
+static int
+build_afr_ec_clusters_for_tier (volgen_graph_t *graph,
+                                 glusterd_volinfo_t *volinfo,
+                                 dict_t *set_dict)
+{
+        int                     ret                 = 0;
+        glusterd_volinfo_t      *dup_volinfo[2]     = {NULL, NULL};
+        int                     clusters            = 0;
+        int                     i                   = 0;
+        volgen_graph_t          hot_graph           = {0};
+        volgen_graph_t          cold_cgraph         = {0};
+        gf_boolean_t            is_hot_tier         = _gf_false;
+
+        if (glusterd_is_shd_compatible_type (volinfo->tier_info.cold_type)) {
+                ret = glusterd_create_sub_tier_volinfo (volinfo,
+                                                        &dup_volinfo[0],
+                                                        is_hot_tier,
+                                                        volinfo->volname);
+                if (ret)
+                        goto out;
+        }
+        if (glusterd_is_shd_compatible_type (volinfo->tier_info.hot_type)) {
+                is_hot_tier = _gf_true;
+                ret = glusterd_create_sub_tier_volinfo (volinfo,
+                                                        &dup_volinfo[1],
+                                                        is_hot_tier,
+                                                        volinfo->volname);
+                if (ret)
+                        goto out;
+                dup_volinfo[1]->tier_info.cur_tier_hot = 1;
+        }
+
+        for (i = 0; i < 2; i++) {
+                if (!dup_volinfo[i])
+                        continue;
+                ret = build_afr_ec_clusters (graph, dup_volinfo[i]);
+                if (ret < 0)
+                        goto out;
+                clusters += ret;
+        }
+        ret = 0;
+out:
+        for (i = 0; i < 2; i++) {
+                if (dup_volinfo[i])
+                        glusterd_volinfo_delete (dup_volinfo[i]);
+        }
+
+        if (ret)
+                clusters = -1;
+
+        return clusters;
+}
+
+
+
+static int
+build_shd_clusters (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
+                    dict_t *set_dict)
+{
+        int     ret = 0;
+        int     clusters = -1;
+
+        if (volinfo->type == GF_CLUSTER_TYPE_TIER) {
+                ret = volgen_graph_build_clients_for_tier_shd (graph, volinfo,
+                                                               set_dict);
+                if (ret)
+                        goto out;
+
+                clusters = build_afr_ec_clusters_for_tier (graph, volinfo,
+                                                           set_dict);
+        } else {
+                ret = volgen_graph_build_clients (graph, volinfo,
+                                                  set_dict, NULL);
+                if (ret)
+                        goto out;
+                clusters = build_afr_ec_clusters (graph, volinfo);
+        }
 out:
         return clusters;
 }
@@ -4413,14 +4554,14 @@ build_shd_graph (volgen_graph_t *graph, dict_t *mod_dict)
         }
 
         cds_list_for_each_entry (voliter, &priv->volumes, vol_list) {
-                ret = build_shd_volume_graph (this, graph, voliter, mod_dict,
-                                              set_dict, graph_check,
-                                              &valid_config);
-
+                ret = build_shd_volume_graph (this, graph, voliter,
+                                              mod_dict, set_dict,
+                                              graph_check, &valid_config);
                 ret = dict_reset (set_dict);
                 if (ret)
                         goto out;
         }
+
 out:
         if (set_dict)
                 dict_unref (set_dict);