lvmpolld(8) — Linux manual page


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]

       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 lv‐
       convert, pvmove, lvchange or vgchange LVM2 commands.

       The purpose of lvmpolld is to reduce the number of spawned  back‐
       ground  processes  per  otherwise unique polling operation. There
       should be only one. It also eliminates the possibility  of  unso‐
       licited 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  de‐
       fined in the LVM configuration explicitly then default setting is
       used  instead  (see  the output of lvmconfig --type default glob‐
       al/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.

              Don't fork, but run in the foreground.

              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 de‐
              fault (/run/ 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.

              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.


              Path for the pid file.

              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 
       ⟨⟩.  If you have a bug report for
       this manual page, see ⟨⟩.
       This page was obtained from the project's upstream Git repository
       ⟨git://⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-06-11.)  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

Red Hat Inc       LVM TOOLS 2.03.15(2)-git (2021-10-20)      LVMPOLLD(8)

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