LSLOCKS(8) LSLOCKS(8) lslocks - lslocks [] lslocks . -b --bytes . 1024 . (KiB MiB GiB ...) : K M G .... -H --list-columns --output. --json --raw . -i --noinaccessible . -J --json JSON. -n --noheadings . -o --output . --help . +list (: lslocks -o +BLOCKER). --output-all . -p --pid - - . -Q --filter (expr) . . scols-filter(5). POSIX READ .qcow2: lslocks --filter 'TYPE != "POSIX" and MODE == "READ" and PATH =~ ".*\.qcow2"' -r --raw . -u --notruncate . -h --help . -V --version . LIBSMARTCOLS_DEBUG=all libsmartcols. LIBSMARTCOLS_DEBUG_PADDING=on . . PID (PID) . LEASE ( fcntl(2)) FLOCK ( flock(2)) POSIX ( fcntl(2) lockf(3)) OFDLCK ( fcntl(2)). . INODE (inode). MAJ:MIN : (major:minor). ( ). *. M 0 ( ) 1 . ( fcntl(2).) . . PATH . "..." . --notruncate . BLOCKER (PID) . HOLDERS ( ) . PID,COMMAND,FD. . . LSLOCKS_COLUMNS= . --list-columns. lslocks lslk(8) Victor A. Abell 2001. " " FLOCK OFD . . fork(2) / cmsg(3) . ( ) . lslocks COMMAND PID. . . OFD (PID) -1. . Davidlohr Bueso Christian Goeschel Ndjomouo flock(1) fcntl(2) lockf(3) scols-filter(5) . lslocks util-linux . util-linux 2.42.1 2026-05-18 LSLOCKS(8)