Poking about I see that the default workstation disk layout:
https://docs.fedoraproject.org/en-US/workstation-docs/disk-config/
has /boot on a ext4 partition and everything else on btrfs.
Also, the replacement for Anaconda will not happen until Fedora 41:
https://forums.fedoraforum.org/showthread.php?332111-Fedora-40-will-remain-with-existing-anaconda
So, are you saying that with Fedora 41, it will be the default for the /boot partition to use btrfs?
Or, is this something that works for you?
Thanks.
Richard
On 5/14/24 3:38 PM, Michal Schorm wrote:
On Tue, May 14, 2024 at 8:13 PM Tim via users
<users@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
Does /boot still need to be its own partition, these days?
/boot/efi has to be, but that's mapped into /boot, already.
Definitely not.
And it actually creates all kinds of problems when separated.
The best *trivial* setup and usage should be having everything on
BTRFS (except EFI, as you said),
and maintain some amount of snapshots you can revert to anytime in
case of any issues.
When /boot is on the BTRFS, the snapshot contains the whole system,
and ensures bootability of the snapshots.
When /boot is on a standalone partition, the snapshot contains kernel
modules, but not the actual kernel.
When booting a new kernel (from /boot) with old kernel modules (from
the snapshot), the modules can't be loaded, leaving you with a kind of
crippled system. (bootable, but only partly usable)
Which is far from what people would usually expect.
--
A better, but more complicated setup consists of various snapshots of
various subvolumes which are mounted to various locations. (e.g.
standalone subvolumes for /home, games, backups, ... whatever)
Often managed by some software (snapper, timeshit, ... not sure about
the specific names), rather than the btrfs commands themselves.
--
I managed to craft a setup that changes which snapshot (or which OS)
will boot by changing just a single symlink.
That too would be (likely ?) impossible with /boot on a separate partition.
--
Michal Schorm
Software Engineer
Core Services - Databases Team
Red Hat
--
On Tue, May 14, 2024 at 8:13 PM Tim via users
<users@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
On Tue, 2024-05-14 at 08:27 -0700, richard emberson wrote:
Back on 05/03/2024 I posted the question:
"How to increase size of /boot partition"
I had the same problem.
As was noted by some, I had not upgraded for a long, long time:
"This type of layout and partition sizes is ancient. /tmp isn't even a partition now."
Does /boot still need to be its own partition, these days?
/boot/efi has to be, but that's mapped into /boot, already.
--
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