dht: report constant directory size

Directory size is meaningless.  Every filesystem has its own
unpredictable way of increasing or decreasing it, based on internal data
structures and even transient conditions.  Some filesystems (e.g. ext4)
never decrease it at all.  Others (e.g. btrfs) don't even report it.
Very few programs look at it, and those that do are broken.
Unfortunately, one such program is GNU tar, which will complain when it
sees different values because at different times we got the value from
different DHT subvolumes.  To avoid such problems, just report a
constant value.

Backport of http://review.gluster.org/#/c/13770/

> Change-Id: Id64ce917c75b5f7ff50cb55b6e997f3b3556e7e3
> BUG: 1302948
> Original-author: Shyam <srangana@redhat.com>
> Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
> Signed-off-by: N Balachandran <nbalacha@redhat.com>
> Reviewed-on: http://review.gluster.org/13770
> Smoke: Gluster Build System <jenkins@build.gluster.com>
> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
> CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
> Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
> Reviewed-by: Vijay Bellur <vbellur@redhat.com>

Change-Id: Id64ce917c75b5f7ff50cb55b6e997f3b3556e7e3
BUG: 1312721
Original-author: Shyam <srangana@redhat.com>
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Signed-off-by: N Balachandran <nbalacha@redhat.com>
Reviewed-on: http://review.gluster.org/13831
Smoke: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>

0 files changed, 0 insertions, 0 deletions