The sanlock daemon manages leases for applications on hosts using shared storage. You must have a sanlock user to run this script: # groupadd -g 363 sanlock # useradd -u 363 -d /var/run/sanlock -s /bin/false -g sanlock sanlock The disk group is also needed: # usermod -a -G disk sanlock More information post-install can be found in README.SLACKWARE