Peter Wemm <[EMAIL PROTECTED]> wrote:
>
> /usr/include/sys/disklabel.h:
> u_int32_t p_size; /* number of sectors in partition */
>
> newfs.c:
> int fssize; /* file system size */
> ..
> havelabel:
> if (fssize == 0)
> fssize = pp->p_size;
>
> ie: there is a signed 32 bit sector count limit. 2^31 == 1TB. It shouldn't
> be too hard to get it to create 2^32 bit (2TB) filesystem though. I'd expect
> there to be more problems that this to bite you though. :-(
>
> 2^31 also happens to be the mmap() file offset limit FWIW.
>
> BTW; what on earth is going on this beastie? Is this raid5 or stripe/concat?
> (And I'd hate to be waiting for a fsck :-)
>
> Cheers,
> -Peter
>
>
>
Is there any real interest in moving beyond 1TB? I think that
it would incur a non-trival overhead as I believe that unsigned ints
would not work and we would be looking at going to 64 bit values. Or
I guess something could be done to simulate larger sectors, but that
is pure speculation.
--John
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