glusterfs mount fail

[2016-08-15 09:21:29.946162] I [glusterfsd.c:1959:main] 0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.5.2 (/usr/sbin/glusterfs --fuse-mountopts=allow_other,default_permissions,max_read=131072 --volfile=/etc/glusterfs_datastore.vol --fuse-mountopts=allow_other,default_permissions,max_read=131072 /mnt/backup)
[2016-08-15 09:21:30.110158] W [options.c:888:xl_opt_validate] 0-writebehind: option 'window-size' is deprecated, preferred is 'cache-size', continuing with correction
[2016-08-15 09:21:30.110244] W [io-cache.c:1726:init] 0-cache: dangling volume. check volfile
[2016-08-15 09:21:30.110822] I [dht-shared.c:311:dht_init_regex] 0-distributed-glusterfs: using regex rsync-hash-regex = ^\.(.+)\.[^.]+$
[2016-08-15 09:21:30.133982] I [socket.c:3578:socket_init] 0-p-v00283-data03: SSL support is NOT enabled
[2016-08-15 09:21:30.134029] I [socket.c:3593:socket_init] 0-p-v00283-data03: using system polling thread
[2016-08-15 09:21:30.134659] I [socket.c:3578:socket_init] 0-p-v00283-data02: SSL support is NOT enabled
[2016-08-15 09:21:30.134684] I [socket.c:3593:socket_init] 0-p-v00283-data02: using system polling thread
[2016-08-15 09:21:30.135242] I [socket.c:3578:socket_init] 0-p-v00283-data01: SSL support is NOT enabled
[2016-08-15 09:21:30.135263] I [socket.c:3593:socket_init] 0-p-v00283-data01: using system polling thread
[2016-08-15 09:21:30.135314] I [client.c:2294:notify] 0-p-v00283-data01: parent translators are ready, attempting connect on transport
[2016-08-15 09:21:30.135475] E [common-utils.c:222:gf_resolve_ip6] 0-resolver: getaddrinfo failed (Name or service not known)
[2016-08-15 09:21:30.135499] E [name.c:249:af_inet_client_get_remote_sockaddr] 0-p-v00283-data01: DNS resolution failed on host p-v00283.example.com
[2016-08-15 09:21:30.135617] I [client.c:2294:notify] 0-p-v00283-data02: parent translators are ready, attempting connect on transport
[2016-08-15 09:21:30.135688] E [common-utils.c:222:gf_resolve_ip6] 0-resolver: getaddrinfo failed (Name or service not known)
[2016-08-15 09:21:30.135731] E [name.c:249:af_inet_client_get_remote_sockaddr] 0-p-v00283-data02: DNS resolution failed on host p-v00283.example.com
[2016-08-15 09:21:30.135753] I [client.c:2294:notify] 0-p-v00283-data03: parent translators are ready, attempting connect on transport
[2016-08-15 09:21:30.135821] E [common-utils.c:222:gf_resolve_ip6] 0-resolver: getaddrinfo failed (Name or service not known)
[2016-08-15 09:21:30.135841] E [name.c:249:af_inet_client_get_remote_sockaddr] 0-p-v00283-data03: DNS resolution failed on host p-v00283.example.com
[2016-08-15 09:21:30.144102] I [fuse-bridge.c:4977:fuse_graph_setup] 0-fuse: switched to graph 0
Final graph:
+------------------------------------------------------------------------------+
  1: volume p-v00283-data01
  2:     type protocol/client
  3:     option remote-subvolume /export/disk0/brick
  4:     option remote-host p-v00283.example.com
  5:     option transport-type socket
  6: end-volume
  7:
  8: volume p-v00283-data02
  9:     type protocol/client
 10:     option remote-subvolume /export/disk1/brick
 11:     option remote-host p-v00283.example.com
 12:     option transport-type socket
 13: end-volume
 14:
 15: volume p-v00283-data03
 16:     type protocol/client
 17:     option remote-subvolume /export/disk2/brick
 18:     option remote-host p-v00283.example.com
 19:     option transport-type socket
 20: end-volume
 21:
 22: volume distributed-glusterfs
 23:     type cluster/distribute
 24:     subvolumes p-v00283-data01 p-v00283-data02 p-v00283-data03
 25: end-volume
 26:
 27: volume writebehind
 28:     type performance/write-behind
 29:     option cache-size 1MB
 30:     subvolumes distributed-glusterfs
 31: end-volume
 32:
 33: volume cache
 34:     type performance/io-cache
 35:     option cache-size 512MB
 36:     subvolumes writebehind
 37: end-volume
 38:
+------------------------------------------------------------------------------+
[2016-08-15 09:21:30.144621] I [fuse-bridge.c:3914:fuse_init] 0-glusterfs-fuse: FUSE inited with protocol versions: glusterfs 7.22 kernel 7.23
[2016-08-15 09:21:30.148517] W [fuse-bridge.c:747:fuse_attr_cbk] 0-glusterfs-fuse: 2: LOOKUP() / => -1 (Transport endpoint is not connected)
[2016-08-15 09:21:30.178092] I [fuse-bridge.c:4818:fuse_thread_proc] 0-fuse: unmounting /mnt/backup
[2016-08-15 09:21:30.188424] W [glusterfsd.c:1095:cleanup_and_exit] (-->/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fb6c7656eed] (-->/lib/x86_64-linux-gnu/libpthread.so.0(+0x76aa) [0x7fb6c79276aa] (-->/usr/sbin/glusterfs(glusterfs_sigwaiter+0xdd) [0x40736d]))) 0-: received signum (15), shutting down
[2016-08-15 09:21:30.188461] I [fuse-bridge.c:5475:fini] 0-fuse: Unmounting '/mnt/backup'.