1. Technology
Linux / Unix Command: lvdisplay
Command Library

NAME

lvdisplay - display attributes of a logical volume  

SYNOPSIS

lvdisplay [-c|--colon] [-d|--debug] [-D|--disk] [-h|--help] [-v[v]|--verbose] LogicalVolumePath [LogicalVolumePath...]  

DESCRIPTION

lvdisplay allows you to see the attributes of a logical volume like size, read/write status, snapshot information etc.  

OPTIONS

-c, --colon
Generate colon seperated output for easier parsing in scripts or programs.

The values are:

* logical volume name
* volume group name
* logical volume access
* logical volume status
* internal logical volume number
* open count of logical volume
* logical volume size in kilobytes
* current logical extents associated to logical volume
* allocated logical extents of logical volume
* allocation policy of logical volume
* read ahead sectors of logical volume
* major device number of logical volume
* minor device number of logical volume

-d, --debug
Enables additional debugging output (if compiled with DEBUG).
-D, --disk
Show attributes of the volume group descriptor array on disk(s). Without this switch they are derived from kernel space. Useful, if the volume group isn't active.
-h, --help
Print a usage message on standard output and exit successfully.
-v, --verbose
Display the mapping of logical extents to physical volumes and physical extents.
-vv, --verbose --verbose
Like -v with verbose runtime information.
 

Examples

"lvdisplay -v /dev/vg00/lvol2" shows attributes of that logical volume and its mapping of logical to physical extents. In case snapshot logical volumes have been created for this original logical volume, this command shows a list of all snapshot logical volumes and their status (active or inactive) as well.

"lvdisplay /dev/vg00/snapshot" shows the attributes of this snapshot logical volume and also which original logical volume it is associated with.  


Important: Use the man command (% man) to see how a command is used on your particular computer.

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