On Thu, 5 Oct 2006 23:58:29 -0600
Andreas Dilger <[EMAIL PROTECTED]> wrote:

> but the patches have not been changed for ext4 (which should really
> default to using extents on a filesystem with the INCOMPAT_EXTENT feature
> set unless told otherwise).  That is a necessity for filesystems larger
> than 2^32 blocks, since there is no way to create old block-mapped files
> past that limit.

That's news to me.  So we only use 48-bit block numbers for extents and
not for old-style indirect blocks?

How much performance improvement do they get, btw?  CPU or IO? I'm not noticing
any difference.

Has been a while since I did any fs testing.  Boy, ext3 is beating the crap
out of ext2 for quality of file layout.
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