The sanlock daemon manages leases for applications running on a cluster of hosts with shared storage. All lease management and coordination is done through reading and writing blocks on the shared storage.
acquired package info from repodata DB: repodata/69e709f4d2852d98f12867a74015d19384fe2727ff670fd70178cdde80b1e77e-primary.sqlite.bz2
The sanklock-help package contains maninfo for sanlock.