Logical volume in linux

To report information about logical volumes:
# lvs

To create a logical volume in an existing volume group:

Method 1 - By mentioning the size:
# lvcreate -L 1G -n lv01 vg01 /dev/sdb1

Method 2 - By mentioning the # of LEs:
# lvcreate -l 32 -n lv01 vg01

You can now use /dev/vg01/lv01 as a block device111111

To scan all disks for Logical volumes:
# lvscan

To change the minor number of a LV:
# lvchange --minor 98 lv_name

To change the permission:

Read-Only:
# lvchange -p r lv_name

Read/Write:
# lvchange --permission r/w lv_name

To expand a LV:
# lvresize -L +1G lv_name

To reduce the size of a LV:
# lvresize -L -512M lv_name

To display the attributes of a LV:
# lvdisplay -v /dev/datavg/loglv

To remove a LV:
# lvremove /dev/vg01/lv01