Problem with software RAID/LVM

[Hans Omli]

I'm trying to install Ubuntu 6.06.1 Server on a machine with two SATA
drives.  The basic layout I'm looking for:

/dev/md0   /boot        ext3     100MB
/dev/md1   VolGroup00   LVM PV   max

I created 'physical volume for RAID' partitions on both drives, created the
MD devices, set md0 to ext3 for /boot, and set md1 to 'physical volume for
LVM'.  Then I selected 'Configure the Logical Volume Manager' and '<Yes>' to
write the changes to disk.  At this poing, I get the following error:

Error informing the kernel about modifications to partition /dev/md/1p1 --
Invalid argument.  This means Linux won't know about any changes you made to
/dev/md/1p1 until you reboot -- so you shouldn't mount it or use it in any
way before rebooting.

Error!!!

For kicks, I tried installing in a VMware virtual machine set up with two
SCSI disks.  Same error.  Thus, this appears to be a bug in the installer.
Any workarounds to get a system up with mirrored disks containing a boot
partition and remaining space for LVM volumes?
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