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okurka12/resize-fs.sh

Created March 2, 2026 22:58
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grow ext4 filesystem after growing the virtual hard drive
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resize-fs.sh
#
# Created 2026-03-02
# Debian 13 Trixie
#
# install parted
sudo apt update && sudo apt install parted
# list partitions
# expected output:
# NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
# sda 8:0 0 80G 0 disk
# ├─sda1 8:1 0 31G 0 part /
# ├─sda2 8:2 0 1K 0 part
# └─sda5 8:5 0 975M 0 part
lsblk
# turn off swap and delete swap partitions
sudo swapoff -a
sudo parted /dev/sda rm 2
# resize partition (leave some space for swap partition)
sudo parted /dev/sda resizepart 1 78GiB
# resize filesystem
sudo resize2fs /dev/sda1
# create swap partition
sudo parted /dev/sda mkpart extended 79GiB 100%
sudo parted /dev/sda mkpart logical linux-swap 79GiB 100%
# format and enable swap
sudo mkswap /dev/sda5
sudo swapon /dev/sda5
# find out new uuid
sudo blkid /dev/sda5
# put new uuid in fstab
sudo nano /etc/fstab
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