Hi Marc, On 01/04/2026 at 09:23, Marc Haber wrote:
The more I think about it, the more I get convinced that the most flexible way with the least changes in the installer is to just let partman optionally be a no-op if there is already something mounted on / target,
Current behaviour allows to re-run partman after completing the partitioning and something is mounted on /target. It then unmounts it and allows to redo the partitioning. Using "something is mounted on /target" as a no-op hint would prevent doing this. I'd rather use a flag file in /var/lib/partman, a preseeded debconf item or an alternative like what is done with boot loader components (grub-installer, systemd-boot-installer, nobootloader).
so that the local admin can set the disk and basic filesystems up in an early_command, or to have a dedicated pre-partitioning hook to download and execute a script.
If you are going to replace partman, you may need to perform the following actions:
- load related installer components (e.g. lvm2-udeb) - stop old LVM volumes and RAID arrays - create partition tables - set up LVM, software RAID, encryption... - create filesystems and swaps - mount filesystems on /target - activate swaps - create /target/etc/crypttab and /target/etc/fstab - install filesystem and block layer packages in the target system - set flag file /var/lib/partman/ignore_uefi for grub-installer
