glusterd: cli command implementation for bitrot scrub status

CLI command  for bitrot scrub status will be :

gluster volume bitrot <volname> scrub status

Above command will show the statistics of bitrot scrubber.

Upon execution of this command it will show some common
scrubber tunable value of volume <VOLNAME> followed by
statistics of scrubber statistics of individual nodes.

sample ouput for single node:

Volume name : <VOLNAME>

State of scrub: Active

Scrub frequency: biweekly

Bitrot error log location: /var/log/glusterfs/bitd.log

Scrubber error log location: /var/log/glusterfs/scrub.log

=========================================================

Node name:

Number of Scrubbed files:

Number of Unsigned files:

Last completed scrub time:

Duration of last scrub:

Error count:

=========================================================

This is just infrastructure. list of bad file, last scrub
time, error count value will be taken care by
http://review.gluster.org/#/c/12503/  and
http://review.gluster.org/#/c/12654/ patches.

Change-Id: I3ed3c7057c9d0c894233f4079a7f185d90c202d1
BUG: 1207627
Signed-off-by: Gaurav Kumar Garg <ggarg@redhat.com>
Reviewed-on: http://review.gluster.org/10231
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/xlators/features/bit-rot/src/bitd/bit-rot.c b/xlators/features/bit-rot/src/bitd/bit-rot.c
index d6ae5e2fdd2..c4ed7dee718 100644
--- a/xlators/features/bit-rot/src/bitd/bit-rot.c
+++ b/xlators/features/bit-rot/src/bitd/bit-rot.c
@@ -1550,9 +1550,12 @@ int
 notify (xlator_t *this, int32_t event, void *data, ...)
 {
         int           idx    = -1;
+        int           ret    = -1;
         xlator_t     *subvol = NULL;
         br_child_t   *child  = NULL;
         br_private_t *priv   = NULL;
+        dict_t       *output = NULL;
+        va_list       ap;
 
         subvol = (xlator_t *)data;
         priv = this->private;
@@ -1619,6 +1622,21 @@ notify (xlator_t *this, int32_t event, void *data, ...)
                         default_notify (this, event, data);
                 break;
 
+        case GF_EVENT_SCRUB_STATUS:
+                gf_log (this->name, GF_LOG_INFO, "BitRot scrub status "
+                        "called");
+                va_start (ap, data);
+                output = va_arg (ap, dict_t *);
+
+                /* As of now hardcoding last-scrub-time value. At the time of
+                 * Final patch submission this option value along with other
+                 * few option value will be calculate based on real time */
+                ret = dict_set_uint64 (output, "last-scrub-time", 12);
+                if (ret) {
+                        gf_log (this->name, GF_LOG_DEBUG, "Failed to set last "
+                                "scrub time value");
+                }
+                break;
         default:
                 default_notify (this, event, data);
         }