08-27-2009
Thanks for your reply.
I'm in confusion. I have LVM's like
/dev/mapper/VolGroup00-LogVol00 -10gb /
/dev/mapper/VolGroup00-LogVol01 -2gb /tmp
/dev/mapper/VolGroup00-LogVol03- 500mb /opt
/dev/mapper/VolGroup00-LogVol04 - 10gb /var
so if i remove /dev/mapper/VolGroup00-LogVol01, i should see 2gb free space right? how can I check that?
and also I need to increase /dev/mapper/VolGroup00-LogVol03 to 2gb from 500mb. how can i do this?
Thanks
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LEARN ABOUT CENTOS
kpartx
KPARTX(8) Linux Administrator's Manual KPARTX(8)
NAME
kpartx - Create device maps from partition tables
SYNOPSIS
kpartx [-a | -d | -l] [-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
-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
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
SEE ALSO
multipath(8) multipathd(8) hotplug(8)
AUTHORS
This man page was assembled By Patrick Caulfield for the Debian project. From documentation provided by the multipath author Christophe
Varoqui, <christophe.varoqui@opensvc.com> and others.
July 2006 KPARTX(8)