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

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
              (/var/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 (/var/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:
              /data/lvmtest/sbin/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.


              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, send it to  This page was obtained
       from the project's upstream Git repository 
       ⟨git://⟩ on 2017-07-05.  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

Red Hat Inc        LVM TOOLS 2.02.173(2)-git (2017-06-28)        LVMPOLLD(8)

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