Structure: creating linux folder for linux specific programs

wiki/linux/disk-management.md

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+# 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`