Ubuntu Preseed Raid 1 with multiple partitions

[Tom H]

On Mon, Jun 3, 2013 at 4:28 PM, Camilo Vieira <camilo.vieira at gmail.com> wrote:
>
> I intend to create the following RAID 1:
>
>     Partition    Size         Filesystem
>         /        20GB            ext4
>         /boot    500MB           ext4
>         swap     2GB             swap
>        /backup   10GB            ext4
>        /opt      all free size   ext4
>
> I have triyng this 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                             \
>                           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/sda3#/dev/sdb3       \
>         .                               \
>         1 2 0 ext4 /backup              \
>               /dev/sda5#/dev/sdb5       \
>         .                               \
>         1 2 0 ext4 /opt                 \
>               /dev/sda6#/dev/sdb6       \
>         .
>
>     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
>
> The setup displays a RAID configuration error and ask me to check the syslog
> file.

I don't see anything wrong with your raid preseed so I can only
suggest that you try again with "DEBCONF_DEBUG=5" on the kernel line
and check on console 4 for any errors.

It shouldn't make a difference these days but I'd choose to have
"/boot" be a primary partition and be the first partition.