More than 255 raid devices

[J D Freeman]

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On Mon, Sep 04, 2006 at 01:10:14PM +1000, Neil Brown wrote:
> I'd much rather address the mail to you, and Cc the list.  This idea
> of replying only to the list never made sense to me, but I guess
> everyone is different....

Ok, I shall do the same.

> No, there wouldn't be...
> The 256 is a hard codes limit in include/linux/raid/md_k.h
> #define MAX_MD_DEVS  256	/* Max number of md dev */
> 
> It could safely be increased to about 8192 I think and probably made
> to go a little higher with a bit of care.
> But I'm afraid it will need a recompile of the kernel.
> 
> I'll see about fixing this properly for 2.6.19.

being that in 2.6.* kernels the minor number is 20bits in length, is
there any reason an upper limit of 1048576 wouldn't work?

I look forward to the fix in 2.6.19.

Thanks

Julia
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