On Tue, Nov 13, 2007 at 07:33:20PM -0200, Toby Thain wrote:
> >>> Yup - that's exactly the kind of error that ZFS and
> >> WAFL do a
> >>> perhaps uniquely good job of catching.
> >> WAFL can't catch all: It's distantly isolated from
> >> the CPU end.
> > WAFL will catch everything that ZFS catches, including the kind of
> > DMA error described above: it contains validating information
> > outside the data blocks just as ZFS does.
> Explain how it can do that, when it is isolated from the application
> by several layers including the network?
Ah, your "CPU end" was referring to the NFS client cpu, not the storage
device CPU. That wasn't clear to me. The same limitations would apply
to ZFS (or any other filesystem) when running in support of an NFS
I thought you were trying to describe a qualitative difference between
ZFS and WAFL in terms of data checksumming in the on-disk layout.
Darren Dunham ddunham@xxxxxxxx
Senior Technical Consultant TAOS http://www.taos.com/
Got some Dr Pepper? San Francisco, CA bay area
< This line left intentionally blank to confuse you. >
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