Re: Mylex DAC vs RAM disk in 2.4.2 devfs

Richard Gooch (rgooch@atnf.csiro.au)
Wed, 18 Apr 2001 17:17:16 +1000


Russell Coker writes:
> I have just upgraded a machine with a Mylex DAC hardware RAID controller to
> kernel 2.4.2 with devfs.
>
> It seems that /dev/rd is used by both the RAM disk in the kernel and the
> Mylex controller!
>
> This is wrong of course, there are two problems, one is the situation of what
> happens if you need both Mylex RAID and a RAM disk. The other is the problem
> that Mylex devices get treated as ram disks by devfsd which cause an upgrade
> to break (the compatibility sym-links are not created correctly).
> I believe that the RAM disk should be changed as /dev/rd has been used by
> Mylex controllers for a long time. I am willing to submit patches to the
> kernel and to devfsd if this suggestion is accepted and someone can suggest a
> good directory name for ram-disks (I don't want to have the same problem
> again).

Leonard and I are discussing the issue. We started at the kernel
summit, but didn't have time to continue. I've sent him an email.

Regards,

Richard....
Permanent: rgooch@atnf.csiro.au
Current: rgooch@ras.ucalgary.ca
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