Basically the idea is that if you have a lot of data, HDDs have much bigger capacities for the price, whereas large SSDs can be expensive. SSDs have gotten cheap, but you can get used enterprise drives on eBay with huge capacities for incredibly cheap. There’s 12TB HDDs for like $100. 12TB of SSDs would run you several hundreds.
You can slap bcache on a 512GB NVMe backed by a 8TB HDD, and you get 8TB worth of storage, 512GB of which will be cached on the NVMe and thus really fast. But from the user’s perspective, it’s just one big 8TB drive. You don’t have to think about what is where, you just use it. You don’t have to be like, I’m going to use this VM so I’ll move it to the SSD and back to the HDD when done. The first time might be super slow but subsequent use will be very fast. It also caches writes too, so you can write up to 512GB really fast in this example and it’ll slowly get flushed to the HDD in the background. But from your perspective, as soon as it’s written to the SSD, the data is effectively commited to disk. If the application calls fsync to ensure data is written to disk, it’ll complete once it’s fully written to the SSD. You get NVMe read/write speeds and the space of an HDD.
So one big disk for your Steam library and whatever you play might be slow on the first load but then as you play the game files gets promoted to the NVMe cache and perform mostly at NVMe speeds, and your loading screens are much shorter.
The Canonical-developed Netplan has served for Linux network configuration on Ubuntu Server and Cloud versions for years. With the recent Ubuntu 23.10 release, Netplan is now being used by default on the desktop. Canonical is committing to fully leveraging Netplan for network configuration with the upcoming Ubuntu 24.04 LTS...
If you’re just using DHCP, you won’t. What Netplan does is take a YAML input file and renders it as a systemd-networkd or NetworkManager configuration file. It’s a very quick and easy way to configure your network, and even have a try command that auto reverts in case you get kicked out of your SSH session.
It seems like what they’re doing for the desktop is hacking up NetworkManager so that it saves back its config as Netplan configs instead of regular NetworkManager configs. That’s the part I’m confused about, because NetworkManager is huge and Netplan doesn’t support close to every option. Their featuresets are wildly different. And last time I checked, the NetworkManager renderer was the least polished one, with the systemd-networkd one being close to a 1:1 match and more reliable.
It made a lot more sense when it was one way only. Two way sounds like an absolute mess.
Bcache is amazing!: Making HDD way faster!
Okay, I love Linux. But I always surprised that I can love Linux ever more everyday. The possibility is basically endless!...
Ubuntu 24.04 LTS Committing Fully To Netplan For Network Configuration (www.phoronix.com)
The Canonical-developed Netplan has served for Linux network configuration on Ubuntu Server and Cloud versions for years. With the recent Ubuntu 23.10 release, Netplan is now being used by default on the desktop. Canonical is committing to fully leveraging Netplan for network configuration with the upcoming Ubuntu 24.04 LTS...