Re: [PATCH] block/ub.c: Increase number of partitions for usb storage

[Hans A Eide]

On 11. mai. 2006, at 02:16, Greg KH wrote:

> On Tue, May 02, 2006 at 08:24:12PM -0700, Pete Zaitcev wrote:
> > On Tue, 2 May 2006 14:59:52 +0200, Hans A Eide  
> > <haeide@xxxxxxxxxxx> wrote:
> >
> > > I do backups to external USB storage and hit the 8 partitions limit
> > > of ub.c
> > > This could also be a problem for others (HFS+ formatted iPods?)
> >
> > It was a bad mistake in retrospect. I limited ub to 8 partitions
> > because I wanted to fit 26 devices into 8 bits of minor.
> >
> > > Any reason for not increasing the partitions limit to 16?
> >
> > Doing so would not be compatible for systems which do not run udevd.
> > Linus forbade such changes, and I agree. So, if we strongly needed
> > ub to go beyond 1+7 partitions, we would need some kind of a  
> > remapping
> > scheme. I have to discuss this with Greg or Harald. Making dis-
> > contiguous nodes is easy with mknod, but I do not know if udev
> > supports it.
>
> udev can handle it just fine, as it just looks at the sysfs "dev" file
> to get the major:minor numbers.  It knows nothing about "ranges" :)

I can confirm this in practice. Good magic :-)


Hans



--
+                                                                      +
    Hans A Eide, PhD.                  Senior Analyst, USIT
   haeide@xxxxxxxxxxx             University of Oslo, Norway
+                                                                      +


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