taldanzig/Adding space to an LVM backed extX or btrfs filesystem.md

Last active August 29, 2015 14:20

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Adding space to an LVM backed extX or btrfs filesystem

Add some physical or virtual storage (resize a VM image, add a new VM image, add a disk)

Create a new LVM physical volume

lvm pvcreate /dev/sdb # substitute appropriate device name

Figure out the volume group name:

lvm vgdisplay

Add the physical volume to the volume group

lvm vgextend debian8-taldev-vg /dev/sdb

Figure out the name of the logical volume you wish to enlarge

lvm lvdisplay

Resize the logical volume

lvm lvextend -l +100%FREE /dev/debian8-taldev-vg/root

Resize the filesystem

For extX:

resize2fs /dev/debian8-taldev-vg/root

For BtrFS

btrfs filesystem resize max /

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