LVM_LVMPOLLD_PIDFILE
Path for the pid file.
lvmpolld8
Lvm poll daemon
Usage
lvmpolld-
lvmpolld [{-B | --binary lvm_binary_path}] [{-f | --foreground}] [{-h | --help}] [{-l | --log all | wire | debug}] [{-p | --pidfile pidfile_path}] [{-s | --socket socket_path}] [{-t | --timeout timeout_value}] [{-V | --version}]
lvmpolld-
lvmpolld [--dump]
Overview
lvmpolld is a polling daemon for LVM. The daemon receives requests for polling of already initialised operations originating from the LVM2 command line tool. The requests for polling originate from 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 a 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 the default setting is used instead (see the output of lvmconfig --type default global/use_lvmpolld command).
Options
To run the daemon in a test environment both the pidfile_path and the socket_path should be changed from the defaults.
-B|--binarylvm_binary_path-
Optional path to alternative LVM binary (default: /usr/bin/lvm). Use for testing purposes only.
-
--dump -
Contact the running lvmpolld daemon to obtain the complete state and print it out in a raw format.
-f|--foreground-
Don't fork, but run in the foreground.
-h|--help-
Show help information.
-l|--logall|wire|debug-
Select the type of log messages to generate. Messages are logged by syslog. Additionally, when
-fis 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|--pidfilepidfile_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|--socketsocket_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|--timeouttimeout_value-
The daemon may shut down after being idle for the given time (in seconds). When the option is omitted or the value given is zero the daemon never shuts down when idle.
-V|--version-
Display the version of lvmpolld daemon.
Environment
-
LVM_LVMPOLLD_SOCKET -
Path for the socket file.
Releases
6 releases since Debian 9 (Stretch); the text changed 5 times.
--binary until Debian 11 (Bullseye);
--foreground until Debian 11 (Bullseye);
--help until Debian 11 (Bullseye);
--log until Debian 11 (Bullseye);
--pidfile until Debian 11 (Bullseye);
--socket until Debian 11 (Bullseye);
--timeout until Debian 11 (Bullseye);
--version until Debian 11 (Bullseye);
-B until Debian 11 (Bullseye);
-V until Debian 11 (Bullseye);
-f until Debian 11 (Bullseye);
-h until Debian 11 (Bullseye);
-l until Debian 11 (Bullseye);
-p until Debian 11 (Bullseye);
-s until Debian 11 (Bullseye);
-t until Debian 11 (Bullseye).