glusterd: Added validation function for stripe-block-size.

Change-Id: I050d01b01eac46550aa435da7d96a972e0393d35
BUG: 770655
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/4561
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>

2 files changed, 209 insertions, 2 deletions

diff --git a/tests/bugs/bug-770655.t b/tests/bugs/bug-770655.t
new file mode 100755
index 00000000..945e323b
--- /dev/null
+++ b/tests/bugs/bug-770655.t
@@ -0,0 +1,168 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+
+cleanup;
+
+## Start and create a distribute-replicate volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume create $V0 replica 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';
+EXPECT 'Distributed-Replicate' volinfo_field $V0 'Type';
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## Setting stripe-block-size as 10MB
+TEST ! $CLI volume set $V0 stripe-block-size 10MB
+EXPECT '' volinfo_field $V0 'cluster.stripe-block-size';
+
+## Finish up
+TEST $CLI volume stop $V0;
+EXPECT 'Stopped' volinfo_field $V0 'Status';
+
+TEST $CLI volume delete $V0;
+TEST ! $CLI volume info $V0;
+
+cleanup;
+
+## Start and create a replicate volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume create $V0 replica 8 $H0:$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';
+EXPECT 'Replicate' volinfo_field $V0 'Type';
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## Setting stripe-block-size as 10MB
+TEST ! $CLI volume set $V0 stripe-block-size 10MB
+EXPECT '' volinfo_field $V0 'cluster.stripe-block-size';
+
+## Finish up
+TEST $CLI volume stop $V0;
+EXPECT 'Stopped' volinfo_field $V0 'Status';
+
+TEST $CLI volume delete $V0;
+TEST ! $CLI volume info $V0;
+
+cleanup;
+
+## Start and create a distribute volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume create $V0 $H0:$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';
+EXPECT 'Distribute' volinfo_field $V0 'Type';
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## Setting stripe-block-size as 10MB
+TEST ! $CLI volume set $V0 stripe-block-size 10MB
+EXPECT '' volinfo_field $V0 'cluster.stripe-block-size';
+
+## Finish up
+TEST $CLI volume stop $V0;
+EXPECT 'Stopped' volinfo_field $V0 'Status';
+
+TEST $CLI volume delete $V0;
+TEST ! $CLI volume info $V0;
+
+cleanup;
+
+## Start and create a stripe volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume create $V0 stripe 8 $H0:$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';
+EXPECT 'Stripe' volinfo_field $V0 'Type';
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## Setting stripe-block-size as 10MB
+TEST $CLI volume set $V0 stripe-block-size 10MB
+EXPECT '10MB' volinfo_field $V0 'cluster.stripe-block-size';
+
+## Finish up
+TEST $CLI volume stop $V0;
+EXPECT 'Stopped' volinfo_field $V0 'Status';
+
+TEST $CLI volume delete $V0;
+TEST ! $CLI volume info $V0;
+
+cleanup;
+
+## Start and create a distributed stripe volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume create $V0 stripe 4 $H0:$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';
+EXPECT 'Distributed-Stripe' volinfo_field $V0 'Type';
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## Setting stripe-block-size as 10MB
+TEST $CLI volume set $V0 stripe-block-size 10MB
+EXPECT '10MB' volinfo_field $V0 'cluster.stripe-block-size';
+
+## Finish up
+TEST $CLI volume stop $V0;
+EXPECT 'Stopped' volinfo_field $V0 'Status';
+
+TEST $CLI volume delete $V0;
+TEST ! $CLI volume info $V0;
+
+cleanup;
+
+## Start and create a distributed stripe replicate volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume create $V0 stripe 2 replica 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';
+EXPECT 'Distributed-Striped-Replicate' volinfo_field $V0 'Type';
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## Setting stripe-block-size as 10MB
+TEST $CLI volume set $V0 stripe-block-size 10MB
+EXPECT '10MB' volinfo_field $V0 'cluster.stripe-block-size';
+
+## 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 c183a646..d3249d3a 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volume-set.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volume-set.c
@@ -94,7 +94,7 @@ out:
         return ret;
 }
 
-int
+static int
 validate_cache_max_min_size (dict_t *dict, char *key, char *value,
                              char **op_errstr)
 {
@@ -208,6 +208,44 @@ out:
         return ret;
 }
 
+static int
+validate_stripe (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;
+
+        if (volinfo->stripe_count == 1) {
+                snprintf (errstr, sizeof (errstr),
+                          "Cannot set %s for a non-stripe volume.", key);
+                gf_log (this->name, GF_LOG_ERROR, "%s", errstr);
+                *op_errstr = gf_strdup (errstr);
+                ret = -1;
+               goto out;
+        }
+
+out:
+        gf_log (this->name, GF_LOG_DEBUG, "Returning %d", ret);
+
+        return ret;
+}
+
 /* dispatch table for VOLUME SET
  * -----------------------------
  *
@@ -417,7 +455,8 @@ struct volopt_map_entry glusterd_volopt_map[] = {
         { .key         = "cluster.stripe-block-size",
           .voltype     = "cluster/stripe",
           .option      = "block-size",
-          .op_version  = 1
+          .op_version  = 1,
+          .validate_fn = validate_stripe
         },
         { .key         = "cluster.stripe-coalesce",
           .voltype     = "cluster/stripe",