Computer Tips - Add a new disk to LVM

Date: 2021feb8 OS: Linux Q. Add a new disk to LVM A. Take a look
# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT fd0 2:0 1 4K 0 disk sda 8:0 0 120G 0 disk ├─sda1 8:1 0 500M 0 part /boot ├─sda2 8:2 0 29.5G 0 part / └─sda3 8:3 0 90G 0 part └─MYVOL 253:0 0 189.9G 0 lvm /stuff sdb 8:16 0 16G 0 disk └─sdb1 8:17 0 16G 0 part /mnt/resource sdc 8:32 0 100G 0 disk └─sdc1 8:33 0 100G 0 part └─MYVOL 253:0 0 189.9G 0 lvm /stuff sdd 8:48 0 128G 0 disk
This shows us the new disk is /dev/sdd since it has nothing hanging off it. Use pvcreate to make a logical volume
# pvcreate /dev/sdd Physical volume "/dev/sdd" successfully created.
Extend your volume group with that logical volume
# vgextend MYVOL /dev/sdd Volume group "MYVOL" successfully extended
See what's up
# vgdisplay MYVOL --- Volume group --- VG Name MYVOL System ID Format lvm2 Metadata Areas 3 Metadata Sequence No 6 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 3 Act PV 3 VG Size <317.99 GiB PE Size 4.00 MiB Total PE 81405 Alloc PE / Size 48614 / <189.90 GiB Free PE / Size 32791 / <128.09 GiB VG UUID HH6gWu-4bk9-5gRR-o850-J6gJ-ryiD-DdTZM1
And note the "Free PE", use that number below Extend your volume group
# lvextend -l +32791 /dev/mapper/MYVOL Size of logical volume MYVOL changed from <189.90 GiB (48614 extents) to <317.99 GiB (81405 extents). Logical volume MYVOL successfully resized.
Finally, resize
# resize2fs /dev/mapper/MYVOL resize2fs 1.42.9 (28-Dec-2013) Filesystem at /dev/mapper/MYVOL is mounted on /stuff; on-line resizing required old_desc_blocks = 24, new_desc_blocks = 40 The filesystem on /dev/mapper/MYVOL is now 83358720 blocks long.
Check with df
df -h /dev/mapper/MYVOL Filesystem Size Used Avail Use% Mounted on /dev/mapper/MYVOL 313G 142G 157G 48% /stuff