LVMDUMP(8)LVMDUMP(8)NAMElvmdump — create lvm2 information dumps for diagnostic purposes
SYNOPSISlvmdump [-a] [-c] [-d directory] [-h] [-l] [-m] [-p] [-s] [-u]
DESCRIPTIONlvmdump 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 -c, cluster status info
- 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.
-c If clvmd is running, gather cluster data as well.
-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 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
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. How‐
ever, 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 dae‐
mon 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
daemon 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 directory 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 "/sbin/lvm.static", for example.
DMSETUP_BINARY
The dmsetup binary to use. Defaults to "dmsetup".
SEE ALSOlvm(8)Red Hat, Inc. LVM TOOLS 2.02.176(2) (2017-11-03) LVMDUMP(8)
