「lslocks」-

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NAME

lslocks – list local system locks

命令语法格式

lslocks [options]

命令描述

lslocks lists information about all the currently held file locks in a Linux system.

命令支持的选项及含义

-i, –noinaccessible
Ignore lock files which are inaccessible for the current user.

-J, –json
Use JSON output format.

-n, –noheadings
Do not print a header line.

-o, –output list
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).

-p, –pid pid
Display only the locks held by the process with this pid.

-r, –raw
Use the raw output format.

-u, –notruncate
Do not truncate text in columns.

-V, –version
Display version information and exit.

-h, –help
Display help text and exit.

OUTPUT

COMMAND
The command name of the process holding the lock.

PID The process ID of the process which holds the lock.

TYPE 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 Size of the locked file.

MODE 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).

M Whether the lock is mandatory; 0 means no (meaning the lock is only advisory), 1 means yes. (See fcntl(2).)

START Relative byte offset of the lock.

END Ending offset of the lock.

PATH 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.

BLOCKER
The PID of the process which blocks the lock.

注意事项

The lslocks command is meant to replace the lslk(8) command,

originally written by Victor A. Abell <
abe@purdue.edu> and unmaintained

since 2001.

AUTHORS

Davidlohr Bueso <
dave@gnu.org>

相关手册

flock(1), fcntl(2), lockf(3)

AVAILABILITY

The lslocks command is part of the util-linux package and is available from
https://www.kernel.org/pub/linux/utils/util-linux/.

参考文献

  • man 8 lslocks, Version util-linux

更新日志

  • 07/11/2018 创建文章