Installing on BTRFS

xen-shell> install debian_bookworm

Divide xvda into xvda1 (500MB, ext4, boot) and xvda2 (as much as one's got, btrfs, /).

 xvda1:           Ext4 journaling file system
 
 Mount point:      /boot
 Mount options:    defaults
 Label:            BOOT
 Reserved blocks:  5%
 Typical usage:    standard
 Bootable flag:    on

 xvda2:                btrfs journaling file system
 
 Format the partition:  yes, format it
 Mount point:           /
 Mount options:         defaults
 Label:                 ROOT
 Bootable flag:         on
 
 The following partitions are going to be formatted:
   partition #1 of Virtual disk 1 (xvda) as ext4
   partition #2 of Virtual disk 1 (xvda) as btrfs
   partition #1 of Virtual disk 2 (xvdb) as swap

I only installed SSH server. Choose xvda as device to put boot loader on.