cluster/dht: A hard link is lost during rebalance + lookup

Problem: A hard link is lost during rebalance + lookup.Rebalance skip
         files if file has hardlink.In dht_migrate_file
         __is_file_migratable () function checks if a file has hardlink,
         if yes file is not migrated but if link is created after call
         this function then link will lost.

Solution: Call __check_file_has_hardlink to check hardlink existence
          after (S+T) bits in migration process ,if file has hardlink
          then skip the file for migrate rebalance process.

> BUG: 1396048
> Change-Id: Ia53c07ef42f1128c2eedf959a757e8df517b9d12
> Signed-off-by: Mohit Agrawal <moagrawa@redhat.com>
> Reviewed-on: http://review.gluster.org/15866
> Reviewed-by: Susant Palai <spalai@redhat.com>
> Smoke: Gluster Build System <jenkins@build.gluster.org>
> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
> Reviewed-by: N Balachandran <nbalacha@redhat.com>
> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
> (cherry picked from commit 71dd2e914d4a537bf74e1ec3a24512fc83bacb1d)

BUG: 1399432
Change-Id: I30e21efd5a054d8a3e640ab3ed8aa7955d083926
Signed-off-by: Mohit Agrawal <moagrawa@redhat.com>
Reviewed-on: http://review.gluster.org/15954
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: N Balachandran <nbalacha@redhat.com>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>

0 files changed, 0 insertions, 0 deletions