# fdisk -l
If we have USB drive connected as /dev/sdc:
# fdisk /dev/sdc
Command d can remove existing logical volumes on the USB drive.
Enter commands n, p, 1-3, +512M to create 3 logical volumes. For example we create first volume /dev/sdc1:
Command (m for help): p
Command (m for help): n
Partition number (1-3): 1
First sector (34-41943006, default 41940992): 34
Last sector, +sectors or +size{K,M,G,T,P}: +512M
Command (m for help): p
Command w saves new partition table and changes can not be undone.
Reload partition table:
# partprobe
Format created discs:
# pvcreate /dev/sdc1
# pvcreate /dev/sdc2
# pvcreate /dev/sdc3
Verify:
# pvdisplay
Create volume group DATA:
# vgcreate DATA /dev/sdc1 /dev/sdc2 /dev/sdc3
To be sure verify group capacity:
# vgdisplay
Create physical volume from 100% of physical volume capacity.
# lvcreate -l +100%FREE -n new_volume DATA
Format the new volume:
# mkfs -t ext3 /dev/DATA/new_volume
Create directory for mount:
# mkdir /mnt/dynamic
Mount the new volume:
# mount /dev/DATA/new_volume /mnt/dynamic
Mount verification:
# df -hT
Mount verification using graphical interface:
# system-config-lvm
# fdisk /dev/sdc
Command (m for help):n
Command (m for help):4
Command (m for help):p
<enter>
<enter>
Command w saves new partition table and it can not be undone.
Verify partition table:
# partprobe
Add new disk to physical LVL partition:
# pvcreate /dev/sdc4
Verify:
# pvdisplay
Extend volume group:
# vgextend DATA /dev/sdc4
Verify extended volume group:
# vgdisplay
Extend logical volume with 1 GB:
# lvextend -L+1G /dev/DATA/new_volume
Resize size of disk:
# resize2fs /dev/DATA/new_volume
Remount:
# mount -o remount /dev/DATA/new_volume
Verify:
# df -hT
# umount /dev/DATA/new_volume
Remove logical volume:
# lvremove /dev/DATA/new_volume
Remove volume group:
# vgremove /dev/DATA
Remove physical volumes:
# pvremove /dev/sdc1
# pvremove /dev/sdc2
# pvremove /dev/sdc3
# pvremove /dev/sdc4
Verification using graphical interface:
# system-config-lvm
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