Reuben D. Budiardja wrote:
Hello,
I installed FC4 with "Automatic partitioning". Now I want to resize the
partition of / so that I can have free space (with no partition) to install
other OS. Here is how my system looks like:
]# fdisk -l /dev/hda
Disk /dev/hda: 40.0 GB, 40007761920 bytes
255 heads, 63 sectors/track, 4864 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 4864 38965657+ 8e Linux LVM
[root@nx-01 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
35G 6.7G 27G 20% /
/dev/hda1 99M 30M 64M 32% /boot
From LVM HowTo, it seems that I have to resize the filesystem first, then
resize the volume using lvreduce. I tried using parted by to resize the
partition and filesystem of /dev/hda2, but it complained about unknown
filesystem type.
So I am hoping for any help on how to resize /dev/hda2 so that I can have
about 10GB of free space.
You're out of luck. I don't know of any tool that can shrink LVM
physical volumes at the moment. If there was such a tool, the process
would be to shrink the filesystem (/), then shrink the logical volume
(/dev/VolGroup00/LogVol00), then shrink the physical volume (on
/dev/hda2), and then shrink the partition.
The most straightforward way of working around this (other than backing
up and reinstalling) would be (after shrinking the filesystem and
logical volume) to add another hard drive to the system, create a new
physical volume on it, add that volume to VolGroup00, use pvmove to move
all of the allocated data to the new drive, remove the hda2 volume from
VolGroup00, delete the hda2 partition, create your new partition table
how you want it (including a new Linux LVM partition), create a new
phsyical volume on your new Linux LVM partition, add that volume to
VolGroup00, use pvmove to move all of the allocated data back to the
original drive, remove the addition drive's physical volume from
VolGroup00, and then remove the additional drive from your machine.
LVM is great for adding space to your existing setup, but not so hot on
reducing it unfortunately.
Paul.
