Adding more space to linux (Redhat) with lvm
Scan for new Luns.
echo "- - -" > /sys/class/scsi_host/host0/scan
Create partition as usual for the new disk discovered.
$ fdisk /dev/sdb
Create physical volume.
$ pvcreate /dev/sdb1
Create volume group using the physical volume if a volume group doesn’t already exist.
$ vgcreate pool0 /dev/sdb1
If adding space to an already existing volume group, add the physical volume to it.
$ vgextend pool0 /dev/sdb1
Activate the volume group if it isn’t already.
$ vgchange –a y pool0
Create a logical volume in the volume group.
$ lvcreate –L 60g –n opt pool0
Create a filesystem on the logical volume as normally done.
$ mkfs.ext3 –L /opt /dev/pool0/opt
Mount the new filesystem.
$ mount /dev/pool0/opt /opt
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