список локальных системных блокировок (list local system locks)
Имя (Name)
lslocks - list local system locks
Синопсис (Synopsis)
lslocks [options]
Описание (Description)
lslocks lists information about all the currently held file locks
in a Linux system.
Note that lslocks also lists OFD (Open File Description) locks,
these locks are not associated with any process (PID is -1). OFD
locks are associated with the open file description on which they
are acquired. This lock type is available since Linux 3.15, see
fcntl(2) for more details.
Параметры (Options)
-b, --bytes
Print the SIZE column in bytes rather than in a
human-readable format.
-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).
--output-all
Output all available columns.
-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.
Вывод (Output)
COMMAND
The command name of the process holding the lock.
PID
The process ID of the process which holds the lock or -1 for
OFDLCK.
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.
Примечание (Note)
The lslocks command is meant to replace the lslk(8) command,
originally written by Victor A. Abell <abe@purdue.edu> and
unmaintained since 2001.
