Increase Ubuntu Cloud Storage

• Ubuntu: Extend your default LVM space - Packet Pushers
• https://netshop-isp.com.cy/blog/how-to-extend-lvm-disk-on-linux-ubuntu-20-04/
• https://www.tecmint.com/extend-and-reduce-lvms-in-linux/
• https://networklessons.com/uncategorized/extend-lvm-partition
• https://askubuntu.com/questions/1406697/extend-lvm-size

For CentOS see Increase CentOS Cloud Storage, #Adding a new disk and extending the exisiting volume group

Important Commands

• lsblk
• pvresize
• cfdisk

Get logical volume path

lvdisplay | less

Example

/dev/ndc-vg/lv-opt

/dev/ndc-vg/lv-var

/dev/centos76_vg/root

/dev/rhel_pkica01/opt

/dev/ubuntu-vg/ubuntu-lv

/dev/vg_ndc/root

/dev/ubuntu-vg/lv-root

Extend logical volume

cfdisk

alternative parted

Extend Physical Volume

pvresize /dev/vda3

pvresize /dev/sda3

Check if extended

pvs

Extend Logical Volume

Use -L if -l does not work

lvextend -L +80G /dev/ndc-vg/lv-opt

lvextend -l +100%FREE /dev/ndc-vg/lv-var

lvextend -l +100%FREE /dev/centos76_vg/root

lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv

lvextend -l +100%FREE /dev/ubuntu-vg/lv-root

Resize blocks

From df

resize2fs /dev/mapper/ndc--vg-lv--opt

resize2fs /dev/mapper/ndc--vg-lv--var

resize2fs /dev/mapper/centos76_vg-root

resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

resize2fs /dev/mapper/ubuntu--vg-lv--root

Adding a new disk and extending the exisiting volume group

# Create physical volume on vdb
pvcreate /dev/vdb

# Find your volume group name (from vgdisplay output)
vgdisplay

# Extend the volume group with vdb
vgextend <your-vg-name> /dev/vdb

# Now you can extend your logical volume
lvextend -l +100%FREE /dev/<vg-name>/<lv-name>

# Resize the filesystem
# For ext4:
resize2fs /dev/<vg-name>/<lv-name>
# For xfs:
xfs_growfs /mount/point