$ Linux Command

Disk

lvdisplay

Show detailed information about LVM logical volumes.

lvmlogical-volumediskdisplayinfo

Additional Notes

lvdisplay displays detailed information about LVM logical volumes, including size, allocation policy, status, device path, and read/write permissions. When run without arguments, it shows information for all logical volumes on the system.

It is the primary command for inspecting the configuration and status of logical volumes. For a more compact overview, lvs can be used instead.

Syntax

lvdisplay [options] [logical-volume-path...]

Parameters

  • logical-volume-path: Path to a specific logical volume (e.g., /dev/vgname/lvname). If omitted, all logical volumes are displayed.

Common Options

  • -a, --all: Show information about all logical volumes, including internal volumes.
  • -c, --colon: Use colon-separated output format (useful for scripting).
  • -s, --short: Show a short listing format.
  • -m, --maps: Show the mapping of logical extents to physical extents.
  • --columns: Display output in column format (like lvs).

Examples

lvdisplay

Show detailed info about all logical volumes.

lvdisplay /dev/myvg/mylv

Show details for a specific logical volume.

lvdisplay -m /dev/myvg/mylv

Show the physical extent mapping for the volume.

lvdisplay -c

Colon-delimited output for scripting.

lvdisplay -s

Short listing.

Practical Notes

  • The device major and minor numbers shown by lvdisplay are dynamic and can change after reboot.
  • The -m option is essential for understanding where data is physically located, especially with striping or mirroring.
  • For monitoring, lvs with --units and --reportformat gives more flexible output.