Extend LVM in Ubuntu
I did a fresh install of Ubuntu 20.04. I have 3 drives on the server. SDA=1.8TB, SDB=1.8TB, SDC=6.4TB. The OS is installed on SDA. When execute a df-h command I appear to be missing some space on SDA. It's not adding up to 1.8TB. It seems the OS install did not allocate the lvm buntu--vg-ubuntu--lv to use the full amount of space. There is about 1TB missing. How do I extend the LVM and reclaim that space? or see where it's being used?
$ df-h
Filesystem Size Used Avail Use% Mounted on
udev 126G 0 126G 0% /dev
tmpfs 26G 2.4M 26G 1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv 196G 11G 176G 6% /
tmpfs 126G 0 126G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 126G 0 126G 0% /sys/fs/cgroup
/dev/sda2 976M 105M 805M 12% /boot
/dev/sda1 511M 7.9M 504M 2% /boot/efi
/dev/sdb 1.8T 77M 1.7T 1% /drives/raid10-1
/dev/sdc 6.4T 89M 6.0T 1% /drives/raid5-1
/dev/loop0 30M 30M 0 100% /snap/snapd/8542
/dev/loop1 55M 55M 0 100% /snap/core18/1880
/dev/loop2 72M 72M 0 100% /snap/lxd/16099
tmpfs 26G 0 26G 0% /run/user/1000
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 29.9M 1 loop /snap/snapd/8542
loop1 7:1 0 55M 1 loop /snap/core18/1880
loop2 7:2 0 71.3M 1 loop /snap/lxd/16099
sda 8:0 0 1.8T 0 disk
├─sda1 8:1 0 512M 0 part /boot/efi
├─sda2 8:2 0 1G 0 part /boot
└─sda3 8:3 0 1.8T 0 part
└─ubuntu--vg-ubuntu--lv 253:0 0 200G 0 lvm /
sdb 8:16 0 1.8T 0 disk /drives/raid10-1
sdc 8:32 0 6.4T 0 disk /drives/raid5-1
Thanks in advance.
Solution 1:
You can try checking free space in Volume Groups using command "vgs" and if there is free space then you can try expanding Logical Volume using "lvextend" command and later when LV is extended you can continue with file system extending. Example can be here: https://www.linuxtechi.com/extend-lvm-partitions/