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lvmpolld

LVM poll daemon that supervises long-running LVM operations

TLDR

Start the daemon in the foreground
$ lvmpolld -f
Start in the foreground with debug logging
$ lvmpolld -f -l debug
Set the idle shutdown timeout (seconds)
$ lvmpolld -t [300]
Use a custom socket path
$ lvmpolld -s [/tmp/lvmpolld.socket]
Use a custom PID file
$ lvmpolld -p [/tmp/lvmpolld.pid]
Dump the current state
$ lvmpolld --dump

SYNOPSIS

lvmpolld [options]

DESCRIPTION

lvmpolld is the LVM poll daemon that supervises long-running LVM operations such as pvmove, lvconvert mirroring, and thin pool extension. It monitors these operations and updates their progress, allowing the initiating command to return while work continues in the background.When an LVM command starts a polled operation, lvmpolld tracks its completion status. The daemon starts automatically when needed and shuts down after a configurable idle period.The daemon communicates via a Unix socket, typically at /run/lvm/lvmpolld.socket, and maintains state about active operations.

PARAMETERS

-f, --foreground

Run in the foreground instead of daemonizing
-l, --log level
Set log level (debug, info, warn, error)
-t, --timeout seconds
Set idle shutdown timeout; daemon exits after being idle this long
-s, --socket path
Use a custom Unix socket path for communication
-p, --pidfile path
Use a custom PID file location
--dump
Dump the current state of the daemon and exit

INSTALL

sudo apt install lvm2
sudo dnf install lvm2
sudo pacman -S lvm2
sudo apk add lvm2-lockd
sudo zypper install lvm2
nix profile install nixpkgs#lvm2

CAVEATS

Usually started automatically by LVM commands; manual invocation is rarely needed. If the daemon dies during an active operation, restarting the original command will resume polling. The --dump option is useful for debugging active operations.

SEE ALSO

lvm(1), pvmove(1), lvconvert(1), lvmconfig(1)