Working with kpartx Command in Red Hat Enterprise Linux
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.
kpartx [-a | -d | -l] [-v] wholedisk
Usage Example
To mount all the partitions in a raw disk image:
kpartx -av disk.img
This will output lines such as:
loop3p1 : 0 20964762 /dev/loop3 63
The loop3p1 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/loop3p1
When you’re done, you need to remove the devices:
kpartx -d disk.img
OPTIONS
- -a Add partition mappings
- -r Read-only partition mappings
- -d Delete partition mappings
- -u Update partition mappings
- -l List partition mappings that would be added -a
- -p set device name-partition number delimiter
- -f force creation of mappings; overrides ‘no_partitions’ feature
- -g force GUID partition table (GPT)
- -v Operate verbosely
- -s Sync mode. Don’t return until the partitions are created
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