I've downloaded and installed the latest version of the LVM. But I have trouble configurating it.
I do not want to format my disks and do a completly re-install. This is my configuration:
RH7.3
IDE disk installed as
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hda2 19046464 12919976 5158976 72% /
/dev/hda1 46636 8847 35381 21% /boot
The type of all the partitions on the /dev/hda is LINUX (not LINUX LVM
I've added a second disk on the same IDE. So I assume on the /dev/hdb
The type of the partition should be LINUX LVM wich is on /dev/hdb1

Then I inserted the following commands
[root@LinuxServer /]# pvcreate /dev/hdb
pvcreate -- physical volume "/dev/hdb" successfully created

[root@LinuxServer /]# vgcreate LVMDisk /dev/hda1 /dev/hdb1
vgcreate -- no valid physical volumes in command line

//Retried with other partition. But still not working

[root@LinuxServer /]# vgcreate LVMDisk /dev/hda2 /dev/hdb1
vgcreate -- no valid physical volumes in command line

do you know what is going wrong here?

1. You ran pvcreate on the disk - /dev/hdb - not a partition (/dev/hdb1). If you want to create a partition to use with LVM, create one over the full disk (hdb) and set the type to 8e, Linux LVM. Or just create the pv using the full /dev/hdb disk.

2. Do you really want to wipe your hda1 and hda2 partitions clean by initializing them?

I suggest your read the LVM howto. It's got all the information you need.


Håkan

I've created a complete partition /dev/hdb1 of the type 0x8E (LINUX LVM). Then I tried again the commads:

[root@LinuxServer root]# pvcreate /dev/hdb1
pvcreate -- physical volume "/dev/hdb1" successfully created

Then I needed to make a group. So I assume I can make a group with the /dev/hda2 (type LINUX) and the /dev/hdb1 (type LINUX LVM) or am I wrong here. This is the command I used for it.

[root@LinuxServer root]# vgcreate lVMDisk /dev/hda2 /dev/hdb1
vgcreate -- some invalid physical volumes in command line

I'm following the HOWTO but I can't still succesfull configurate the LVM. I need some help.

Thx

You cannot use your existing hda1 or hda2 partitions for LVM since they are of "swap" and "linux" type respectively. All partitions in a volume group needs to be of the LVM (8e) type. If you were to change the type of the hda2 partition from linux to linux-lvm you would have to initialize it and that effectively erases all data on the partititon.

You could, however, use parted or some other partitioning tool to try to shrink the root partition (hda2) to create space in which you could create a new lvm partition (hda3) to use with your volume group.


Håkan