nondeterministic exportfs? /home/users (ext4) does not support NFS export.

["Paweł Sikora" <pluto@agmk.net>]

Hi,

i have a new machine with fresh linux distro (2.6.36.2 kernel, nfs-1.2.3)
and the configured export doesn't work sometimes.

following md1, md2 partitions are mounted and configured for exporting:

Filesystem            Size  Used Avail Use% Mounted on
/dev/md0              7.6G  1.4G  5.8G  19% /
/dev/md1              1.9T   42G  1.9T   3% /home/atest
/dev/md2              798G  116G  682G  15% /home/users

# /etc/rc.d/init.d/nfs status
Configured NFS exports:
/home/atest     *(rw,async,no_subtree_check,no_root_squash,insecure_locks)
/home/users     *(rw,sync,no_wdelay,no_subtree_check,no_root_squash,insecure_locks)

Active NFS exports:
/home/atest     <world>(rw,async,wdelay,no_root_squash,no_subtree_check,insecure_locks)
/home/users     <world>(rw,no_root_squash,no_subtree_check,insecure_locks)

rpc.mountd (pid 3195) is running...
nfsd (pid 3213 3212 3211 3210 3209 3208 3207 3206) is running...

# exportfs -v
/home/atest     <world>(rw,async,wdelay,no_root_squash,no_subtree_check,insecure_locks)
/home/users     <world>(rw,no_root_squash,no_subtree_check,insecure_locks)

but the /home/users doesn't work and (bad workaround) re-export is needed.

# exportfs -rv
exporting *:/home/users
exportfs: /home/users does not support NFS export
exporting *:/home/atest

# exportfs -rv
exporting *:/home/users
exporting *:/home/atest

/home/atest works fine, /home/users has weird problems.

what's wrong with this /home/users @ ext4 ?
thanks for any hints.

BR,
Pawel.