AIX 5.2 ls command hanging on JFS2 FS

From: Michael E. Thomadakis (miket_at_hellas.tamu.edu)
Date: 08/30/04 

Date: Mon, 30 Aug 2004 11:51:42 -0500

Hello all.

I few days ago we've noticed a strange behavior on our p690 system (running
5.2 with all the patches as of end of july 2004 applied). Command
ls -l on a JFS2 file system was hanging indefinitely. Has anyone noticed this
behavior before? We resorted into restoring a mksysb from the past.

Another questions relates to failed autofs mounts from a 'crappy' NFS server.
We had to mount an automaounted FS from an unstable NFS file server. When the
server failed (and was restarted) the previously automounted FSs could not be
umounted neither could the same FS mounted afresh. We tried everything to
force unmounts from the failing NFS servers but to no avail.

Any hint, expecially on the first item would be greatly appreciated.

thanks!
Michael