демон опроса LVM (LVM poll daemon)
Имя (Name)
lvmpolld — LVM poll daemon
Синопсис (Synopsis)
lvmpolld [-l|--log all|wire|debug] [-p|--pidfile pidfile_path]
[-s|--socket socket_path] [-B|--binary lvm_binary_path]
[-t|--timeout timeout_value] [-f|--foreground] [-h|--help]
[-V|--version]
lvmpolld [--dump]
Описание (Description)
lvmpolld is polling daemon for LVM. The daemon receives requests
for polling of already initialised operations originating in LVM2
command line tool. The requests for polling originate in the
lvconvert, pvmove, lvchange or vgchange LVM2 commands.
The purpose of lvmpolld is to reduce the number of spawned
background processes per otherwise unique polling operation.
There should be only one. It also eliminates the possibility of
unsolicited termination of background process by external
factors.
lvmpolld is used by LVM only if it is enabled in lvm.conf(5) by
specifying the global/use_lvmpolld setting. If this is not
defined in the LVM configuration explicitly then default setting
is used instead (see the output of lvmconfig --type default
global/use_lvmpolld command).
Параметры (Options)
To run the daemon in a test environment both the pidfile_path and
the socket_path should be changed from the defaults.
-f|--foreground
Don't fork, but run in the foreground.
-h|--help
Show help information.
-l|--log all|wire|debug
Select the type of log messages to generate. Messages are
logged by syslog. Additionally, when -f is given they are
also sent to standard error. There are two classes of
messages: wire and debug. Selecting 'all' supplies both
and is equivalent to a comma-separated list -l wire,debug.
-p|--pidfile pidfile_path
Path to the pidfile. This overrides both the built-in
default (/run/lvmpolld.pid) and the environment variable
LVM_LVMPOLLD_PIDFILE. This file is used to prevent more
than one instance of the daemon running simultaneously.
-s|--socket socket_path
Path to the socket file. This overrides both the built-in
default (/run/lvm/lvmpolld.socket) and the environment
variable LVM_LVMPOLLD_SOCKET.
-t|--timeout timeout_value
The daemon may shutdown after being idle for the given
time (in seconds). When the option is omitted or the value
given is zero the daemon never shutdowns on idle.
-B|--binary lvm_binary_path
Optional path to alternative LVM binary (default:
/bin/lvm). Use for testing purposes only.
-V|--version
Display the version of lvmpolld daemon.
--dump Contact the running lvmpolld daemon to obtain the complete
state and print it out in a raw format.
Переменные окружения (Environment variables)
LVM_LVMPOLLD_PIDFILE
Path for the pid file.
LVM_LVMPOLLD_SOCKET
Path for the socket file.
Смотри также (See also)
lvm(8), lvm.conf(5)
