ls on directory freezes session

[Hubble, Frank]

We're running Suse Sles8 SP 2 on vm 4.3.0
cd to a mount point and do a ll , the session freezes, just never comes
back.
We have been doing some snapshot testing and tsm was recovering the mount
point
but that process is no longer running.
/proc/dasd/devices show the address active.
vgdisplay and lvdisplay look fine.
reboot did not clear it up.
is there a way to "unfreeze" this mount point.
mount /dev/vg01/lvol2 /u02 also hangs.