Alfred von Campe wrote:
I have a disk on which CentOS is installed and running. The disk
partitions look like this:
Disk /dev/sda: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 1044 8281507+ 8e Linux LVM
What I would like to do is increase the size of the second partition
to be the entire disk, and then grow the logical volume(s) and the
file systems on it. BTW, this is all on a VMware virtual disk, so I
really can't screw things up, as I have a copy of the VMDK files and
can start over again (and again, and again...). The disk was
originally 8GB, and I just resized it with vmware-vdiskmanager.
I have tried to use parted to resize the partition, but I get the
message "Error: Could not detect file system.", and I can't find a way
to resize the partition with fdisk and sfdisk. Am I missing something
obvious or is this not doable?
I would just create an additional partition /dev/sda3 with the free
space. This partition can be added to the PVS:
pvcreate /dev/sda3
vgextend VolGroup00 /dev/sda3
lvextend -L20G /dev/VolGroup00/diskname
resize2fs /dev/VolGroup00/diskname 20G
Depends of course on how your volume group is named. See the man pages
for details.
Don't mess with the LVM partition using parted, but you figured that one
out yourself :-)
Theo
PS.
If booted from a rescue disk,
use lvscan to find the LVM group.
Then activate the volume group by
vgchange -a y
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