Installation guide

Chapter 5. LVM Configuration Examples

[root@tng3-1 ~]# mkfs.gfs2 -plock_nolock -j 1 /dev/new_vol_group/new_logical_volume

This will destroy any data on /dev/new_vol_group/new_logical_volume.

Are you sure you want to proceed? [y/n] y

Device: /dev/new_vol_group/new_logical_volume

Blocksize: 4096

Filesystem Size: 491460

Journals: 1

Resource Groups: 8

Locking Protocol: lock_nolock

Lock Table:

Syncing...

All Done

The following commands mount the logical volume and report the file system disk space usage.

[root@tng3-1 ~]# mount /dev/new_vol_group/new_logical_volume /mnt

[root@tng3-1 ~]# df

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/new_vol_group/new_logical_volume

1965840 20 1965820 1% /mnt

5.2. Creating a Striped Logical Volume

This example creates an LVM striped logical volume called striped_logical_volume that stripes

data across the disks at /dev/sda1, /dev/sdb1, and /dev/sdc1.

5.2.1. Creating the Physical Volumes

Label the disks you will use in the volume groups as LVM physical volumes.

Warning

This command destroys any data on /dev/sda1, /dev/sdb1, and /dev/sdc1.

[root@tng3-1 ~]# pvcreate /dev/sda1 /dev/sdb1 /dev/sdc1

Physical volume "/dev/sda1" successfully created

Physical volume "/dev/sdb1" successfully created

Physical volume "/dev/sdc1" successfully created

5.2.2. Creating the Volume Group

The following command creates the volume group volgroup01.

[root@tng3-1 ~]# vgcreate volgroup01 /dev/sda1 /dev/sdb1 /dev/sdc1

Volume group "volgroup01" successfully created