Notes
Atom FeedResizing a Ubuntu Disk in a UTM VM
UTM is an awesome virtualization system based on QEMU built for M1 (ARM) Macs. v4.0.8 of UTM, the first v4 stable release, came out today with support for resizing QEMU disk images but while the UTM docs show how to resize the UTM machine, there’s several more steps to get the virtualized file system to recognize the additional disk space.
For an Ubuntu guest OS running a default GPT and LVM partition:
- On a shut down VM, in the UTM UI’s configuration, select the disk you wish to expand, resize the disk, and save the VM configuration.
- Launch the VM and get a terminal
- Run
sudo fdisk -land confirm that there is aGPT PMBR Size Mismatch will be corrected by w(rite)warning - Run
sudo parted -land gparted should ask to automatically fix the size mismatch. Fix the size mismatch. - Run
sudo lvmto get an lvm console - Run
lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lvto expand the lvm logical volume - Exit the lvm console
- Run
sudo resize2fs /dev/ubuntu-vg/ubuntu-lvto expand the ext4 file system to the logical volume - Run
df -hto confirm that the/dev/mapper/ubuntu--vg-ubuntu--lvhas been expanded.
References:
- Superuser: GPT PMBR Size Mismatch will be corrected by w(rite)
- AskUbuntu: Ubuntu Server 18.04 LVM out of space with improper default partitioning
Bash File Test Operators
Usage Example:
if [[ -e "$file" ]]; then
echo "pass"
else
echo "does not pass"
fi
| Operator | Meaning |
|---|---|
-e |
File exists |
-s |
File exists and is not empty |
-d |
File exists and is a directory |
-f |
File exists and is a regular file |
-v |
Variable is set and been assigned a value |
-z |
String is zero |
-n |
String is non-zero |
Python Generic Type Annotations
There’s a minor conflict within Python where mypy’s strict typing is
incompatible with its current default syntax. Specifically, if you have a
generic type like _TemporaryFileWrapper, mypy will tell you to add type
parameters which will convert it to something like
_TemporaryFileWrapper[bytes]. However, python 3 syntax will error out
with a TypeError: 'type' object is not subscriptable. This can be fixed
by importing the annotations future:
from __future__ import annotations.
A working example that passes both strict mypy typing and is syntactically correct:
from __future__ import annotations
import tempfile
def get_tempfile() -> tempfile._TemporaryFileWrapper[bytes]:
return tempfile.NamedTemporaryFile()
temp = get_tempfile()
with open(temp.name, 'wb') as f:
f.write(b'data')
temp.close()
Mac Menubar Applications
Applications in my menubar (from left to right):
- Syncthing - Open source self-hosted file synchronization client
- Steelseries Driver - Configuration for my Arctis 7 headphones
- Mac Fan Control - Monitors temperature, optionally control fan speed
- Rectangle - Window tiling manager
- Amphetamine - Keeps computer from sleeping
- MenuMeters - System resource usage monitoring
Logodust
I’ve been using logodust.com for a few projects in the past but their website is now down, I believe due to dropbox’s restrictions on embedding images. I’ve downloaded the images and they are now rehosted here:
