Re: Blatant layering violations (was Re: ext4 features)

[Tom Vier]

On Wed, Jul 05, 2006 at 05:36:39PM -0700, Valerie Henson wrote:
> On Mon, Jul 03, 2006 at 10:55:23PM +0200, Tomasz Torcz wrote:
> > 
> >   ZFS was already called ,,blatant layering violation''. ;)

It buys you some preformance. Someone here already mentioned variable stripe
sizes. ZFS doesn't just add a checksum sector after each block (something
i've been planning to write an md module for, for a couple years). It writes
the checksum at the end of the tree member, inode, dirent, whatever. So
there's no read-modify-write when you write < 1 checksum block size.

One thing i noticed about zfs that surprised me: it's using indirect blocks,
from what i saw.

-- 
Tom Vier <tmv@xxxxxxxxxxx>
DSA Key ID 0x15741ECE
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/