DANGER!!! Problems with 10.04 installer (RAID devices *will* get corrupted)

[Alvin Thompson]

On 04/22/2010 07:04 AM, Dave Howorth wrote:
> I hesitate to join this thread, since it can get a bit heated. But I
> think that there are probably two separate bugs and I'd like to explain why.
>
> #191119 sounds like a problem I have had with a different distro and
> different hardware config and different partitioning. Basically what
> happens is that grub overwrites blocks that it shouldn't. In my case it
> is a true hardware RAID with LVM occupying the whole disk (i.e. not in a
> partition and I now know why this is not recommended! ). The LVM
> metadata occupies the start of the RAID virtual disk. grub got confused
> about the boot order of the machine and wrote to that disk instead of
> the separate boot disk. #191119 sounds like the same situation, with
> grub writing to one of the disks in the fakeRAID (and I assume, but
> don't know, that the fakeRAID has control information at the start of
> the disk). So that bug would be down to the well-known difficulties grub
> sometimes has in its relationship with the BIOS.

The reporter specifically mentioned that he chose a manual install and 
did not create any logical volumes, so this isn't the same issue.