Features/trash : Combined patches for trash translator

This is the combined patch set for supporting trash feature.
http://www.gluster.org/community/documentation/index.php/Features/Trash

Current patch includes the following features:
* volume set options for enabling trash globally and
  exclusively for internal operations like self-heal
  and re-balance
* volume set options for setting the eliminate
  path, trash directory path and maximum trashable
  file size.
* test script for checking the functionality of the
  feature
* brief documentation on different aspects of trash
  feature.

Change-Id: Ic7486982dcd6e295d1eba0f4d5ee6d33bf1b4cb3
BUG: 1132465
Signed-off-by: Anoop C S <achiraya@redhat.com>
Signed-off-by: Jiffin Tony Thottan <jthottan@redhat.com>
Reviewed-on: http://review.gluster.org/8312
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

1 files changed, 33 insertions, 1 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c
index 1af7a77cff1..779d6be34a4 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volgen.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c
@@ -1421,6 +1421,7 @@ brick_graph_add_posix (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
 {
         int             ret = -1;
         gf_boolean_t    quota_enabled = _gf_true;
+        gf_boolean_t    trash_enabled = _gf_false;
         gf_boolean_t    pgfid_feat    = _gf_false;
         char            *value = NULL;
         xlator_t        *xl = NULL;
@@ -1435,6 +1436,13 @@ brick_graph_add_posix (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
                         goto out;
         }
 
+        ret = glusterd_volinfo_get (volinfo, VKEY_FEATURES_TRASH, &value);
+        if (value) {
+                ret = gf_string2boolean (value, &trash_enabled);
+                if (ret)
+                        goto out;
+        }
+
         ret = glusterd_volinfo_get (volinfo,
                                     "update-link-count-parent",
                                     &value);
@@ -1459,7 +1467,7 @@ brick_graph_add_posix (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
         if (ret)
                 goto out;
 
-        if (quota_enabled || pgfid_feat)
+        if (quota_enabled || pgfid_feat || trash_enabled)
                 xlator_set_option (xl, "update-link-count-parent",
                                    "on");
 out:
@@ -1467,6 +1475,29 @@ out:
 }
 
 static int
+brick_graph_add_trash (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
+                        dict_t *set_dict, glusterd_brickinfo_t *brickinfo)
+{
+        int ret = -1;
+        xlator_t *xl = NULL;
+
+        xl = volgen_graph_add (graph, "features/trash", volinfo->volname);
+        if (!xl)
+                goto out;
+        ret = xlator_set_option (xl, "trash-dir", ".trashcan");
+        if (ret)
+                goto out;
+        ret = xlator_set_option (xl, "brick-path", brickinfo->path);
+        if (ret)
+                goto out;
+        ret = xlator_set_option (xl, "trash-internal-op", "off");
+        if (ret)
+                goto out;
+out:
+        return ret;
+}
+
+static int
 brick_graph_add_bd (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
                      dict_t *set_dict, glusterd_brickinfo_t *brickinfo)
 {
@@ -2018,6 +2049,7 @@ static volgen_brick_xlator_t server_graph_table[] = {
         {brick_graph_add_acl, "acl"},
         {brick_graph_add_changelog, "changelog"},
         {brick_graph_add_bd, "bd"},
+        {brick_graph_add_trash, "trash"},
         {brick_graph_add_posix, "posix"},
 };