# lvmpolld(8) - man - phpMan

[LVMPOLLD(8)](https://www.chedong.com/phpMan.php/man/LVMPOLLD/8/markdown)                            System Manager's Manual                           [LVMPOLLD(8)](https://www.chedong.com/phpMan.php/man/LVMPOLLD/8/markdown)



## NAME
       lvmpolld — LVM poll daemon

## 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**]

## DESCRIPTION
       lvmpolld  is polling daemon for LVM. The daemon receives requests for polling of already ini‐
       tialised operations originating in LVM2 command line tool.  The requests for  polling  origi‐
       nate 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 un‐
       solicited termination of background process by external factors.

       lvmpolld   is  used  by  LVM  only  if  it  is  enabled  in  [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown)  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**___**lvm**‐‐
       **polld** command).

## 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
              Select  the  type  of log messages to generate.  Messages are logged by syslog.  Addi‐
              tionally, 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
              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
              Path to the socket file. This  overrides  both  the  built-in  default  (/run/lvm/lvm‐
              polld.socket) and the environment variable **LVM**___**LVMPOLLD**___**SOCKET**.

### -t --timeout
              The daemon may shutdown after being idle for the given time (in seconds). When the op‐
              tion is omitted or the value given is zero the daemon never shutdowns on idle.

### -B --binary
              Optional path to alternative LVM binary (default: /usr/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
       **LVM**___**LVMPOLLD**___**PIDFILE**
              Path for the pid file.

       **LVM**___**LVMPOLLD**___**SOCKET**
              Path for the socket file.


## SEE ALSO
       [**lvm**(8)](https://www.chedong.com/phpMan.php/man/lvm/8/markdown), [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown)



Red Hat Inc                       LVM TOOLS [2.03.11(2)](https://www.chedong.com/phpMan.php/man/2.03.11/2/markdown) (2021-01-08)                      [LVMPOLLD(8)](https://www.chedong.com/phpMan.php/man/LVMPOLLD/8/markdown)