cli/glusterd: Changes to quota command Quota feature

 re-work.

Following are the cli commands that are new/re-worked:
======================================================

volume quota <VOLNAME> {enable|disable|list [<path> ...]|remove <path>| default-soft-limit <percent>} |
volume quota <VOLNAME> {limit-usage <path> <size> [<percent>]} |
volume quota <VOLNAME> {alert-time|soft-timeout|hard-timeout} {<time>}
volume status [all | <VOLNAME> [nfs|shd|<BRICK>|quotad]] [detail|clients|mem|inode|fd|callpool]
volume statedump <VOLNAME> [nfs|quotad] [all|mem|iobuf|callpool|priv|fd|inode|history]

glusterd changes:
=================
* Quota limits are now set as extended attributes by glusterd from
  the aux mount created by the cli.
* The gfids of the directories on which quota limits are set
  for a given volume are stored in
  /var/lib/glusterd/vols/<volname>/quota.conf file in binary format,
  and whose cksum and version is stored in
  /var/lib/glusterd/vols/<volname>/quota.cksum.

Original-author: Krutika Dhananjay <kdhananj@redhat.com>
Original-author: Krishnan Parthasarathi <kparthas@redhat.com>

BUG: 969461
Change-Id: If32bba36c67f9c2a30417af9c6389045b2b7c13b
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Signed-off-by: Raghavendra G <rgowdapp@redhat.com>
Reviewed-on: http://review.gluster.org/6003
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

1 files changed, 15 insertions, 4 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd.c b/xlators/mgmt/glusterd/src/glusterd.c
index e4c4caee4..c2be2c9da 100644
--- a/xlators/mgmt/glusterd/src/glusterd.c
+++ b/xlators/mgmt/glusterd/src/glusterd.c
@@ -1189,6 +1189,15 @@ init (xlator_t *this)
                 exit (1);
         }
 
+        snprintf (storedir, PATH_MAX, "%s/quotad", workdir);
+        ret = mkdir (storedir, 0777);
+        if ((-1 == ret) && (errno != EEXIST)) {
+                gf_log (this->name, GF_LOG_CRITICAL,
+                        "Unable to create quotad directory %s"
+                        " ,errno = %d", storedir, errno);
+                exit (1);
+        }
+
         snprintf (storedir, PATH_MAX, "%s/groups", workdir);
         ret = mkdir (storedir, 0777);
         if ((-1 == ret) && (errno != EEXIST)) {
@@ -1253,12 +1262,14 @@ init (xlator_t *this)
         conf = GF_CALLOC (1, sizeof (glusterd_conf_t),
                           gf_gld_mt_glusterd_conf_t);
         GF_VALIDATE_OR_GOTO(this->name, conf, out);
-        conf->shd = GF_CALLOC (1, sizeof (nodesrv_t),
-                               gf_gld_mt_nodesrv_t);
+
+        conf->shd = GF_CALLOC (1, sizeof (nodesrv_t), gf_gld_mt_nodesrv_t);
         GF_VALIDATE_OR_GOTO(this->name, conf->shd, out);
-        conf->nfs = GF_CALLOC (1, sizeof (nodesrv_t),
-                               gf_gld_mt_nodesrv_t);
+        conf->nfs = GF_CALLOC (1, sizeof (nodesrv_t), gf_gld_mt_nodesrv_t);
         GF_VALIDATE_OR_GOTO(this->name, conf->nfs, out);
+        conf->quotad = GF_CALLOC (1, sizeof (nodesrv_t),
+                               gf_gld_mt_nodesrv_t);
+        GF_VALIDATE_OR_GOTO(this->name, conf->quotad, out);
 
         INIT_LIST_HEAD (&conf->peers);
         INIT_LIST_HEAD (&conf->volumes);