Date: Mon, 10 Dec 2001 11:01:43 -0800 From: Mike Smith <msmith@freebsd.org> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: freebsd-current@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern subr_diskmbr.c Message-ID: <200112101901.fBAJ1hV01951@mass.dis.org> In-Reply-To: Your message of "Mon, 10 Dec 2001 10:49:28 PST." <200112101849.fBAInSO47847@apollo.backplane.com>
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> Well, for reads a non-stripe-crossing op would still work reasonably
> well. But for writes less then full-stripe operations without
> spindle sync are going to be terrible due to the read-before-write
> requirement (to calculate parity). The disk cache is useless in that
> case.
You obviously weren't reading the previous thread on RAID5 checksum
calculation, I see. 8)
--
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also. But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view. [Dr. Fritz Todt]
V I C T O R Y N O T V E N G E A N C E
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