LVMDUMP(8) - phpMan

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 default, 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 information. Using this option, it can be in-
structed 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 contains cached informa-
tion that is currently stored in lvmetad: VG metadata, PV metadata and various map-
pings in between these metadata 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 contains all in-progress
operation currently monitored by the daemon and partial history for all yet uncol-
lected results of polling operations already finished including reason.

-s Gather system info and context. Currently, this encompasses info gathered by call-
ing lsblk command and various systemd info and context: overall state of systemd
units present in the system, more detailed status of units controlling LVM func-
tionality and the content of systemd journal for current boot.

-u Gather udev info and context: /etc/udev/udev.conf file, udev daemon version (output
of 'udevadm info --version' command), udev rules currently used in the system (con-
tent of /lib/udev/rules.d and /etc/udev/rules.d directory), list of files in
/lib/udev directory and dump of current udev database content (the output of 'ude-
vadm 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/lvm/lvm.static", for example.

DMSETUP_BINARY
The dmsetup binary to use. Defaults to "dmsetup".