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Re: Newbie question about amd64 Xen Dom0

On Sun, Jan 20, 2008 at 11:37:18AM -0400, Ernesto Bascon wrote:
> Another question, reading,
> http://en.wikipedia.org/wiki/Comparison_of_file_systems

Do not believe everything on that page ....

> I've seen that FFS supports a 4GB file size as maximum.
> Is that correct?

The maximum size of an netbsd FFSv1 file in a filesystem with 1k fragments
and 8k blocks is slightly over 1024 * (8192/4)^3 bytes.
(Since files can be sparse, you can verify it.)

FFSv1 File systems are limited to 2^32 (possibly 2^31) fragments, although
there may be lurking bugs when the physical sector number exceeds 2^31.

FFSv2 supports 64bit fragment numbers, but at a cost of doubling the
size of all the file system metadata.


David Laight: david%l8s.co.uk@localhost

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