Expanding LVM to Full Capacity
2021-02-01 11:17 (3 years ago)
ytyng
After building a PC and installing Ubuntu, I noticed that the logical partition in LVM was not utilizing the entire storage capacity, so I decided to extend it.
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 1.8M 3.2G 1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv 196G 75G 112G 41% /
Even though I was using 1TB of storage, only a 196GB partition was created.
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
...
nvme0n1 259:0 0 931.5G 0 disk
├─nvme0n1p1 259:1 0 1M 0 part
├─nvme0n1p2 259:2 0 1G 0 part /boot
└─nvme0n1p3 259:3 0 930.5G 0 part
└─ubuntu--vg-ubuntu--lv 253:0 0 200G 0 lvm /
The physical partition is 930GB, but the logical partition is 200GB.
Use lvextend -l +100%FREE to extend it to the maximum capacity.
$ lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv
Size of logical volume ubuntu-vg/ubuntu-lv changed from 200.00 GiB (51200 extents) to <930.51 GiB (238210 extents).
Logical volume ubuntu-vg/ubuntu-lv successfully resized.
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
...
nvme0n1 259:0 0 931.5G 0 disk
├─nvme0n1p1 259:1 0 1M 0 part
├─nvme0n1p2 259:2 0 1G 0 part /boot
└─nvme0n1p3 259:3 0 930.5G 0 part
└─ubuntu--vg-ubuntu--lv 253:0 0 930.5G 0 lvm /
It has been extended.
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 1.8M 3.2G 1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv 196G 75G 112G 41% /
Since it has not yet been reflected in the file system, proceed with resize2fs.
$ sudo resize2fs /dev/ubuntu-vg/ubuntu-lv
[sudo] password for xxxxx:
resize2fs 1.45.5 (07-Jan-2020)
Filesystem at /dev/ubuntu-vg/ubuntu-lv is mounted on /; on-line resizing required
old_desc_blocks = 25, new_desc_blocks = 117
The filesystem on /dev/ubuntu-vg/ubuntu-lv is now 243927040 (4k) blocks long.
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 1.7M 3.2G 1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv 915G 75G 802G 9% /
...
It has been extended.
Note: For Non-LVM Partitions
Memo for cases when extending EBS on EC2. For non-LVM partitions.
Case of extending EBS from 100GB to 200GB. Since it's not LVM, lvextend cannot be used. Instead, use growpart.
$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS ... nvme0n1 259:0 0 200G 0 disk └─nvme0n1p1 259:1 0 100G 0 part / $ sudo growpart /dev/nvme0n1 1 CHANGED: partition=1 start=16065 old: size=209699102 end=209715167 new: size=419414302 end=419430367 $ sudo resize2fs /dev/nvme0n1p1 resize2fs 1.46.5 (30-Dec-2021) Filesystem at /dev/nvme0n1p1 is mounted on /; on-line resizing required old_desc_blocks = 7, new_desc_blocks = 13 The filesystem on /dev/nvme0n1p1 is now 52426787 (4k) blocks long. $ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS ... nvme0n1 259:0 0 200G 0 disk └─nvme0n1p1 259:1 0 200G 0 part /
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