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Re: Problems with SATA and >15 partitions

On Sun, 2004-05-30 at 22:36, Christoph Hellwig wrote:
> On Sun, May 30, 2004 at 01:11:30PM +0200, Goswin von Brederlow wrote:
> > As for 3 this is a general problem of scsi disks. Wouldn't it be
> > possible for the code that scans partitions to allocate device nodes
> > dynamically for partitions >15 so that users with devfs or udev active
> > would get additional device nodes created? Alternatively a userspace
> > program could scan the partition block and create devices with the
> > device mapper coresponding to each partition. Both aproaches would
> > allow for >15 partition.
> 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.

Not that this is beeing a problem for G5s too. Apple partition maps
traditionally have lots of partitions, because of small "driver" ones
used by MacOS, among others. We regulary cross the 15 partitions
limit. On IDE, it's ok, with SATA or SCSI, it's a problem.

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