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8. System administration commands (usually only for root)

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KPARTX

Section: Maintenance Commands (8)
Updated: 2016-10-28
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NAME

kpartx - Create device maps from partition tables.  

SYNOPSIS

kpartx [-a|-d|-u|-l] [-r] [-p] [-f] [-g] [-s|-n] [-v] wholedisk  

DESCRIPTION

This tool, derived from util-linux' partx, reads partition tables on specified device and create device maps over partitions segments detected. It is called from hotplug upon device maps creation and deletion.  

OPTIONS

-a
Add partition mappings.
-d
Delete partition mappings.
-u
Update partition mappings.
-l
List partition mappings that would be added -a.
-r
Read-only partition mappings.
-p
Set device name-partition number delimiter.
-f
Force creation of mappings; overrides 'no_partitions' feature.
-g
Force GUID partition table (GPT).
-s
Sync mode (Default). Don't return until the partitions are created.
-n
Nosync mode. Return before the partitions are created.
-v
Operate verbosely.
 

EXAMPLE

To mount all the partitions in a raw disk image:
kpartx -av disk.img

This will output lines such as:

add map loop1p1 (254:4): 0 409597 linear 7:1 3

The loop1p1 is the name of a device file under /dev/mapper which you can use to access the partition, for example to fsck it:

fsck /dev/mapper/loop1p1

When you're done, you need to remove the devices:

kpartx -d disk.img
 

SEE ALSO

multipath(8) multipathd(8) hotplug(8)  

AUTHORS

This man page was assembled By Patrick Caulfield for the Debian project.

multipath-tools was developed by Christophe Varoqui <christophe.varoqui@opensvc.com> and others.


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO
AUTHORS

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