On Sat, 19 Sep 2020 11:48:18 +0200 Daniel Pocock <daniel@xxxxxxxxxx> wrote: > I noticed another thread about subvolumes already exists, I'm starting > this one for the very specific topic of installing multiple root > filesystems as subvolumes > > Examples: Fedora 33 in one subvolume, Fedora rawhide in another > subvolume, Fedora 33 32-bit in another subvolume, maybe RHEL in a > subvolume too > > Can this be supported by the installer? > > Can it be supported by grub? > > If somebody installs their OS to the top level of their btrfs today, > can they pivot that into a subvolume later? > > All these OS installs would shared some things like /home I've been doing something like this for the past few Fedora releases. Each release has it's own subvolume, including a /boot directory. I use refind to select the subvolume I want and boot the kernel directly. I don't use grub2 since I find its configuration too arcane. I also had to set this up manually since the installer at the time didn't support it. Each time a new Fedora release comes out, I create snapshot of my Fedora N, boot into it, and upgrade to Fedora N+1. If the update goes wrong, I boot Fedora N, delete the snapshot, and try again. Once I am happy with the upgrade, I delete the old subvolume. I don't believe that it is possible to snapshot the root of a btrfs filesystem. I don't really do multiboot however, especially for a production machine. I use virtual machines and containers to access other operating systems. Jim _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
