cvs commit: src/sys/amd64/include pmap.h vmparam.h

[Peter Wemm]

Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?= wrote:
> Peter Wemm <peter at FreeBSD.org> writes:
> >   Increase user VM space from 1/2TB (512GB) to 128TB.
> 
> What's our file size limit these days?

Thats a very good question.  Last year, I was able to make Very Large sparse
files on a ufs1 fs and mmap them to try and fill up the ia64 user VM.  The
32 bit block numbers were the limit though.  ufs2 should have no such problem
itself, but if its living in a disklabel'ed drive, the physical limit for
the partition is 1TB.  If you use the raw disk without a label, or use
gpt on the drive, that limit is gone too.

Cheers,
-Peter
--
Peter Wemm - peter at wemm.org; peter at FreeBSD.org; peter at yahoo-inc.com
"All of this is for nothing if we don't go to the stars" - JMS/B5