Re: Problems with SATA and >15 partitions

[Goswin von Brederlow <brederlo@informatik.uni-tuebingen.de>]

Matthew Wilcox <willy@debian.org> writes:

> On Sun, May 30, 2004 at 05:37:05PM +0200, Goswin von Brederlow wrote:
>> Christoph Hellwig <hch@lst.de> writes:
>> > No, theres lots of code in kernelspace that assumes a partitioned disk
>> > has a block of minors.  Use a volume manager instead of traditional
>> > partitions if you need more than 15 subdivions of a disk.
>> 
>> Ide disks have a block of 64 minors per disk, scsi only 16. So it
>> can't be hardcoded that much.
>
> You misunderstand.  The problem is the assumption that all minors per
> disc are contiguous (in a single block).  This is fairly fundamental
> and difficult to change.  I tried to do it and gave up.

Using device mapper to create pseudo devices for the hidden
partitions sounds more and more like the way to go. Lets see if I can
get libparted to scan the partition block and setup the devices.

MfG
        Goswin