glusterd: Added validation function for quota-timeout.

Change-Id: I7f82f4217a41e0fe41272e6ef82925e1fe97fcd5
BUG: 765230
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/4557
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>

2 files changed, 110 insertions, 2 deletions

diff --git a/tests/bugs/bug-765230.t b/tests/bugs/bug-765230.t
new file mode 100755
index 00000000000..2012be5ad07
--- /dev/null
+++ b/tests/bugs/bug-765230.t
@@ -0,0 +1,60 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+
+cleanup;
+
+## Start and create a volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume create $V0 replica 2 stripe 2 $H0:$B0/${V0}{1,2,3,4,5,6,7,8};
+
+## Verify volume is created
+EXPECT "$V0" volinfo_field $V0 'Volume Name';
+EXPECT 'Created' volinfo_field $V0 'Status';
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## Setting quota-timeout as 20
+TEST ! $CLI volume set $V0 features.quota-timeout 20
+EXPECT '' volinfo_field $V0 'features.quota-timeout';
+
+## Enabling features.quota-deem-statfs
+TEST ! $CLI volume set $V0 features.quota-deem-statfs on
+EXPECT '' volinfo_field $V0 'features.quota-deem-statfs'
+
+## Enabling quota
+TEST $CLI volume quota $V0 enable
+EXPECT 'on' volinfo_field $V0 'features.quota'
+
+## Setting quota-timeout as 20
+TEST $CLI volume set $V0 features.quota-timeout 20
+EXPECT '20' volinfo_field $V0 'features.quota-timeout';
+
+## Enabling features.quota-deem-statfs
+TEST $CLI volume set $V0 features.quota-deem-statfs on
+EXPECT 'on' volinfo_field $V0 'features.quota-deem-statfs'
+
+## Disabling quota
+TEST $CLI volume quota $V0 disable
+EXPECT 'off' volinfo_field $V0 'features.quota'
+
+## Setting quota-timeout as 30
+TEST ! $CLI volume set $V0 features.quota-timeout 30
+EXPECT '20' volinfo_field $V0 'features.quota-timeout';
+
+## Disabling features.quota-deem-statfs
+TEST ! $CLI volume set $V0 features.quota-deem-statfs off
+EXPECT 'on' volinfo_field $V0 'features.quota-deem-statfs'
+
+## Finish up
+TEST $CLI volume stop $V0;
+EXPECT 'Stopped' volinfo_field $V0 'Status';
+
+TEST $CLI volume delete $V0;
+TEST ! $CLI volume info $V0;
+
+cleanup;
diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-set.c b/xlators/mgmt/glusterd/src/glusterd-volume-set.c
index e66c1f9bbea..721f88cde73 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volume-set.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volume-set.c
@@ -161,6 +161,52 @@ out:
         return ret;
 }
 
+static int
+validate_quota (dict_t *dict, char *key, char *value,
+                char **op_errstr)
+{
+        char                 errstr[2048] = "";
+        char                *volname      = NULL;
+        glusterd_conf_t     *priv         = NULL;
+        glusterd_volinfo_t  *volinfo      = NULL;
+        int                  ret          = 0;
+        xlator_t            *this         = NULL;
+
+        this = THIS;
+        GF_ASSERT (this);
+        priv = this->private;
+        GF_ASSERT (priv);
+
+        ret = check_dict_key_value (dict, key, value);
+        if (ret)
+                goto out;
+
+        ret = get_volname_volinfo (dict, &volname, &volinfo);
+        if (ret)
+                goto out;
+
+        ret = glusterd_volinfo_get_boolean (volinfo, VKEY_FEATURES_QUOTA);
+        if (ret == -1) {
+                gf_log (this->name, GF_LOG_ERROR,
+                        "failed to get the quota status");
+                goto out;
+        }
+
+        if (ret == _gf_false) {
+                snprintf (errstr, sizeof (errstr),
+                          "Cannot set %s. Enable quota first.", key);
+                gf_log (this->name, GF_LOG_ERROR, "%s", errstr);
+                *op_errstr = gf_strdup (errstr);
+                ret = -1;
+                goto out;
+        }
+
+        ret = 0;
+out:
+        gf_log (this->name, GF_LOG_DEBUG, "Returning %d", ret);
+
+        return ret;
+}
 
 /* dispatch table for VOLUME SET
  * -----------------------------
@@ -729,7 +775,8 @@ struct volopt_map_entry glusterd_volopt_map[] = {
           .voltype     = "features/quota",
           .option      = "timeout",
           .value       = "0",
-          .op_version  = 1
+          .op_version  = 1,
+          .validate_fn = validate_quota
         },
         { .key         = "features.quota-deem-statfs",
           .voltype     = "features/quota",
@@ -737,7 +784,8 @@ struct volopt_map_entry glusterd_volopt_map[] = {
           .value       = "off",
           .type        = DOC,
           .flags       = 0,
-          .op_version  = 2
+          .op_version  = 2,
+          .validate_fn = validate_quota
         },
 
         /* Marker xlator options */