[Lustre-discuss] 1.6.5 MOUNT problem?

[Johnlya]

#uname -a
Linux OSS1_MASTER 2.6.9-67.0.7.EL_lustre.1.6.5smp #1 SMP Mon May 12
22:02:50 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux

mkfs.lustre --fsname=test --mdt --mgs --mgsnode=MDS at tcp0 /dev/sdb1  //
sucess
mount.lustre /dev/sdb1 /mnt/mdt   //success
mount
/dev/sda3 on / type ext3 (rw)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
usbfs on /proc/bus/usb type usbfs (rw)
/dev/sda1 on /boot type ext3 (rw)
none on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/sdb1 on /mnt/mdt type lustre (0)

Is the "/dev/sdb1 on /mnt/mdt type lustre (0)" right?

When I used HA to start Lustre, it became "/dev/sdb1 on /mnt/mdt type
lustre (rw)".
Do they have difference? Why?
Thank you!