wiki/wiki/linux/disk-management.md

# Disk Management

## Grow non-LVM ext4 partition

ATTENTION: Please note that the partition to enlarge has to be the last one with the free space after it.

SSH into the VM.
- run `lsblk` check if the disk size has changed
- if not `reboot` the virtual machine

In the following it is assumed that the partition to enlarge is `/dev/sda2`
- change the size of the partition with `parted /dev/sda`
- inside of parted run `print free` and check where the free space after your partition ends
- run `resizepart` and follow the instructions; End is the number you checked in the last step
- `quit` parted

Now you need to resize the filesystem with `resize2fs /dev/sda2`.

## Error solving

### sudo: unable to open ... Read-only file system

source: [https://askubuntu.com/questions/197459/how-to-fix-sudo-unable-to-open-read-only-file-system]

Ususally the filesystem will go into read-only mode whe the system is running and there is a consistency error.
To fix it run:
- `sudo fsck -Af -M` - check all filesystems
If `fsck` gets stuck after its version banner:
`fsck from util-linux 2.20.1`
you may want to try using the ext4-specific fsck:
- `fsck.ext4 -f /dev/sda1`