lvmpolld(8) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT VARIABLES | SEE ALSO | COLOPHON

LVMPOLLD(8)              System Manager's Manual             LVMPOLLD(8)

NAME         top

       lvmpolld — LVM poll daemon

SYNOPSIS         top

       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]

DESCRIPTION         top

       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).

OPTIONS         top

       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.

ENVIRONMENT VARIABLES         top

       LVM_LVMPOLLD_PIDFILE
              Path for the pid file.

       LVM_LVMPOLLD_SOCKET
              Path for the socket file.

SEE ALSO         top

       lvm(8), lvm.conf(5)

COLOPHON         top

       This page is part of the lvm2 (Logical Volume Manager 2) project.
       Information about the project can be found at 
       ⟨http://www.sourceware.org/lvm2/⟩.  If you have a bug report for
       this manual page, see ⟨https://github.com/lvmteam/lvm2/issues⟩.
       This page was obtained from the tarball
       https://github.com/lvmteam/lvm2/archive/refs/tags/v2_03_13.tar.gz
       fetched from ⟨https://github.com/lvmteam/lvm2/releases⟩ on
       2021-08-27.  If you discover any rendering problems in this HTML
       version of the page, or you believe there is a better or more up-
       to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not
       part of the original manual page), send a mail to
       man-pages@man7.org

Red Hat Inc         LVM TOOLS 2.03.13(2) (2021-08-11)        LVMPOLLD(8)

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