NAME
lslocks - list local system locksSYNOPSIS
lslocks [options]DESCRIPTION
lslocks lists information about all the currently held file locks in a Linux system.OPTIONS
-b, --bytesPrint the sizes in bytes rather than in a
human-readable format.
By default, the unit, sizes are expressed in, is byte, and unit prefixes are in
power of 2^10 (1024). Abbreviations of symbols are exhibited truncated in
order to reach a better readability, by exhibiting alone the first letter of
them; examples: "1 KiB" and "1 MiB" are respectively
exhibited as "1 K" and "1 M", then omitting on purpose the
mention "iB", which is part of these abbreviations.
Ignore lock files which are inaccessible for
the current user.
Use JSON output format.
Do not print a header line.
Specify which output columns to print. Use
--help to get a list of all supported columns.
The default list of columns may be extended if list is specified in the
format +list (e.g., lslocks -o +BLOCKER).
Output all available columns.
Display only the locks held by the process
with this pid.
Use the raw output format.
Do not truncate text in columns.
Display help text and exit.
Print version and exit.
OUTPUT
COMMANDThe command name of the process holding the
lock.
The process ID of the process which holds the
lock or -1 for OFDLCK.
The type of lock; can be FLOCK (created with
flock(2)), POSIX (created with fcntl(2) and lockf(3)) or
OFDLCK (created with fcntl(2)).
Size of the locked file.
The lock’s access permissions (read,
write). If the process is blocked and waiting for the lock, then the mode is
postfixed with an '*' (asterisk).
Whether the lock is mandatory; 0 means no
(meaning the lock is only advisory), 1 means yes. (See fcntl(2).)
Relative byte offset of the lock.
Ending offset of the lock.
Full path of the lock. If none is found, or
there are no permissions to read the path, it will fall back to the
device’s mountpoint and "..." is appended to the path. The
path might be truncated; use --notruncate to get the full path.
The PID of the process which blocks the
lock.
NOTES
The lslocks command is meant to replace the lslk(8) command, originally written by Victor <[email protected]>A. and unmaintained since 2001.AUTHORS
Davidlohr <[email protected]>BuesoSEE ALSO
flock(1), fcntl(2), lockf(3)REPORTING BUGS
For bug reports, use the issue tracker at <https://github.com/util-linux/util-linux/issues>.AVAILABILITY
The lslocks command is part of the util-linux package which can be downloaded from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-linux/>.2022-05-11 | util-linux 2.38.1 |