On 9/20/2025 12:17 AM, Samuel Sieb wrote:
On 9/19/25 10:12 AM, home user via users wrote:
I've seen a few references to "sub-volumes" in this thread.
What are the advantages of using sub-volumes?
What are the trade-offs?
Are they required or optional?
If you use the default btrfs configuration in the installer, then
they're "required" as that's the default configuration now.
The really nice thing about using subvolumes is that you don't have to
guess and hope that you get the sizes right for the / and /home
partitions. I remember many times when I would create too many VMs or
something in the / partition and run out of space when there was still
lots of room in /home. Or doing system upgrades was a big one. I
would often symlink the cache into /home. Or you run out of space in
/home, but there's still lots left in /. Now, there's only one
partition and / and /home are just subvolumes. So the total space is
shared and you only run out when it's all gone.
I vaguely recall you having me use "ln -s" to solve a semi-annual
upgrade out-of-space problem several years ago. I see your point.
Thank-you, Samuel.
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