topic LVM in Linux in Operating System - Linux

LVM in Linux

Faizer Jameel — Wed, 21 Nov 2007 13:13:25 GMT

Dear All
I have used LVM's in HP unix and am very famillair with it, but this is the first time I am using RHEL Linux ES4. I have a blade with 2 146gb disks. I want to set up the LV's as we do in HP Unix.[ /dev/vg00/lvol1, etc] Then I want to have a vg01 with lvol1 lvol2. I want to create a file systems and then mount it.How do I do this and can anyone provide me with the required steps. Please do not refer me to some manual. I am just brand new to Linux.
Thanking you
Faizer

Re: LVM in Linux

Ivan Ferreira — Wed, 21 Nov 2007 13:25:11 GMT

pvcreate /dev/sda
vgcreate /dev/sda datavg
lvcreate -L MB -n datavg
mkfs -t ext3 /dev/datavg/datalv
tune2fs -c 0 -i 0 -m 0 /dev/datavg/datalv
Modify /etc/fstab.

Re: LVM in Linux

skt_skt — Wed, 21 Nov 2007 16:06:37 GMT

is that a good practice to set c or i to zero ,which will disable th FS check?

Re: LVM in Linux

Stuart Browne — Wed, 21 Nov 2007 16:16:33 GMT

If you're using a manual install, you have to use the GUI interface to do LVM's easily.

If you're doing a kickstart, you can set the LVM stuff up in your kickstart without any issue.

If it's an already installed system, then basically what Ivan said :)

Re: LVM in Linux

Zeev Schultz — Thu, 22 Nov 2007 07:34:00 GMT

run system-config-lvm and it will give you LVM gui which is pretty much self explaining. Keep in mind that:

disk devices in Linux are /dev/sdXY (where X is from a to z,Y from 1 to ...) and not like /dev/dsk/cXtYdZ. fdisk -l will show you all your disks/partitions.

Re: LVM in Linux

Ivan Ferreira — Thu, 22 Nov 2007 08:45:34 GMT

>> is that a good practice to set c or i to zero ,which will disable th FS check?

For ext3 it is, because the information needed to maintain FS integrity is in the journal.