Ubuntu Preseed Raid 1 with multiple partitions

[Tom H]

On Mon, Jun 3, 2013 at 5:13 PM, Camilo Vieira <camilo.vieira at gmail.com> wrote:
>
> I fixed the problem with the following configuration:
>
> d-i partman-md/device_remove_md    boolean true
> d-i partman-auto/method string raid
> d-i partman-auto/disk string /dev/sda /dev/sdb
> d-i partman-auto/expert_recipe string \
>       multiraid ::                                         \
>               10000 5000 20000 raid                        \
>                       $primary{ } method{ raid }           \
>               .                                            \
>               200 512 500 raid                             \
>                       $primary{ } method{ raid }           \
>               .                                            \
>               2000 512 4000 raid                           \
>                       method{ raid }                       \
>               .                                            \
>               10000 512 15000 raid                         \
>                       method{ raid }                       \
>               .                                            \
>               10000 10000 1000000000 raid                  \
>                       method{ raid }                       \
>               .
>
> d-i partman-auto-raid/recipe string \
>     1 2 0 ext4 /                \
>           /dev/sda1#/dev/sdb1       \
>     .                               \
>     1 2 0 ext4 /boot                \
>           /dev/sda2#/dev/sdb2       \
>     .                               \
>     1 2 0 swap -                    \
>           /dev/sda5#/dev/sdb5       \
>     .                               \
>     1 2 0 ext4 /backup              \
>           /dev/sda6#/dev/sdb6       \
>     .                               \
>     1 2 0 ext4 /opt                 \
>           /dev/sda7#/dev/sdb7       \
>     .
>
> d-i mdadm/boot_degraded boolean true
> d-i partman-md/confirm_nooverwrite boolean true
> d-i partman-md/confirm boolean true
> d-i partman-partitioning/confirm_write_new_label boolean true
> d-i partman/choose_partition select finish
> d-i partman/confirm boolean true
> d-i partman/confirm_nooverwrite boolean true

Please don't top post.

I'm glad that it's now working.

So changing "/boot" to be a primary partition made all the difference.
I could've sworn that I'd installed Linux onto logical partitions and
without a single primary partition in the past; maybe it's a
requirement for a mirrored "/boot", whether it's its own partition or
a directory on "/".