LVMDUMP(8) System Manager's Manual LVMDUMP(8)
NAME
lvmdump — create lvm2 information dumps for diagnostic purposes
SYNOPSIS
lvmdump [-a] [-c] [-d directory] [-h] [-l] [-m] [-p] [-s] [-u]
DESCRIPTION
lvmdump is a tool to dump various information concerning LVM2. By de-
fault, it creates a tarball suitable for submission along with a problem
report.
The content of the tarball is as follows:
• dmsetup info
• table of currently running processes
• recent entries from /var/log/messages (containing system messages)
• complete lvm configuration and cache (content of /etc/lvm)
• list of device nodes present under /dev
• list of files present /sys/block
• list of files present /sys/devices/virtual/block
• if enabled with -m, metadata dump will be also included
• if enabled with -a, debug output of vgscan, pvscan and list of all
available volume groups, physical volumes and logical volumes will be
included
• if enabled with -l, lvmetad state if running
• if enabled with -p, lvmpolld state if running
• if enabled with -s, system info and context
• if enabled with -u, udev info and context
OPTIONS
-a Advanced collection. WARNING: if lvm is already hung, then this
script may hang as well if -a is used.
-d directory
Dump into a directory instead of tarball By default, lvmdump will
produce a single compressed tarball containing all the informa-
tion. Using this option, it can be instructed to only produce the
raw dump tree, rooted in directory.
-h Print help message
-l Include lvmetad(8) daemon dump if it is running. The dump con-
tains cached information that is currently stored in lvmetad: VG
metadata, PV metadata and various mappings in between these meta-
data for quick access.
-m Gather LVM metadata from the PVs This option generates a 1:1 dump
of the metadata area from all PVs visible to the system, which
can cause the dump to increase in size considerably. However,
the metadata dump may represent a valuable diagnostic resource.
-p Include lvmpolld(8) daemon dump if it is running. The dump con-
tains all in-progress operation currently monitored by the daemon
and partial history for all yet uncollected results of polling
operations already finished including reason.
-s Gather system info and context. Currently, this encompasses info
gathered by calling lsblk command and various systemd info and
context: overall state of systemd units present in the system,
more detailed status of units controlling LVM functionality and
the content of systemd journal for current boot.
-u Gather udev info and context: /etc/udev/udev.conf file, udev dae-
mon version (output of 'udevadm info --version' command), udev
rules currently used in the system (content of /lib/udev/rules.d
and /etc/udev/rules.d directory), list of files in /lib/udev di-
rectory and dump of current udev database content (the output of
'udevadm info --export-db' command).
ENVIRONMENT VARIABLES
LVM_BINARY
The LVM2 binary to use. Defaults to "lvm". Sometimes you might
need to set this to "/usr/bin/lvm.static", for example.
DMSETUP_BINARY
The dmsetup binary to use. Defaults to "dmsetup".
SEE ALSO
lvm(8), lvmpolld(8),
udev(8), udevadm(8)
Red Hat, Inc. LVM TOOLS 2.03.31(2) (2025-02-27) LVMDUMP(8)
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