Hi, list: I''m trying configure lustre with: 1 MGS -------------> 192.168.3.100 with mkfs.lustre --mgs /dev/md1 ; mount -t lustre ... 1 MDT ------------> 192.168.3.101 with mkfs.lustre --fsname=datafs00 --mdt --mgsnode=192.168.3.100 /dev/sda3 ; mount -t lustre ... 4 ost -----------> 192.168.3.102-104 with mkfs.lustre --fsname=datafs00 --ost --mgsnode=192.168.3.100 at tcp0 /dev/sda3 ; mount -t lustre..... foreach node But when I try mount from any node: LOG IN NODE: LustreError: 4743:0:(obd_mount.c:1927:lustre_fill_super()) Unable to mount (-22) LustreError: 11-0: an error occurred while communicating with 192.168.3.101 at tcp. The mds_connect operation failed with -11 LustreError: Skipped 1 previous similar message LustreError: 11-0: an error occurred while communicating with 192.168.3.101 at tcp. The mds_connect operation failed with -11 LustreError: Skipped 5 previous similar messages LustreError: 11-0: an error occurred while communicating with 192.168.3.101 at tcp. The mds_connect operation failed with -11 LustreError: Skipped 10 previous similar messages LustreError: 11-0: an error occurred while communicating with 192.168.3.101 at tcp. The mds_connect operation failed with -11 LustreError: Skipped 20 previous similar messages LOG IN MGS: --------- thanks and sorry for my english.