Re: Increasing limit on SCSI hard drives

Richard Gooch (Richard.Gooch@atnf.CSIRO.AU)
Fri, 31 Jul 1998 10:16:19 +1000

Terry L. Ridder writes:
> Hello;
> Since Informix & Oracle have joined the Linux Community
> with their recent press releases it will be a matter of time
> before the current limit of 16 SCSI hard drives poses a problem.
> Are there an plans to increase the limit to even 32 in the near
> future?
> Is this type of enhancement scheduled for Linux-2.3?

Jakub wrote a patch for the vger tree. It increased the size of dev_t
to handle more discs, which required new syscalls, which then required
new (patched) applications (like fdisk(8) and mount(8) IIRC).
An alternative that doesn't require a change in dev_t size or changes
to userspace is to use the automagic device number generation in
devfs, and use the filp->private_data mechanism to distinguish
partitions/drives. I've been planning on doing this, but haven't had
time. I'd welcome a patch, though :-)



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