Hi there, We've been trying to get GFS stablized on Debian for a month or so now.. We have a very simple installation with three nodes started like this.. ========= start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- $CCSD_OPTIONS echo "$NAME." /sbin/lock_gulmd -n aicluster -s cms1,cms2,cmsqa sleep 1 /bin/mount -t gfs -o acl /dev/sda /san ========= Every few days the cluster hangs for some reason.. Thats a separate problem though. For now though our main problem is the only way to restart is to reboot all three machines.. We can't shutdown and restart the cluster without a reboot.. Here is the messages we're getting.. cms1:/home/alfresco# gulm_tool shutdown cms1 Cannot shutdown cms1. Maybe try unmounting gfs? cms1:/home/alfresco# umount /san umount: /san: device is busy umount: /san: device is busy Any ideas? Regards, Damon. <pre>Working to protect human rights worldwide DISCLAIMER Internet communications are not secure and therefore Amnesty International Ltd does not accept legal responsibility for the contents of this message. If you are not the intended recipient you must not disclose or rely on the information in this e-mail. Any views or opinions presented are solely those of the author and do not necessarily represent those of Amnesty International Ltd unless specifically stated. Electronic communications including email might be monitored by Amnesty International Ltd. for operational or business reasons. This message has been scanned for viruses by Postini. www.postini.com