Date: Wed, 12 Aug 2009 00:53:23 -0400 From: grarpamp <grarpamp@gmail.com> To: freebsd-performance@freebsd.org Subject: RELENG_7 heavy disk = system crawls Message-ID: <d2e731a10908112153j6247994dibbbfad9429da9633@mail.gmail.com>
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> cards aren't going to help with zfs. No, but for geli hifn(4) crypto(4)/(9), geli(8) might work if aes-cbc is indeed the mode geli uses. See the source I guess. > Does anyone make a disk controller with crypto built in? Yes. There are trays and cable dongles and things that do aes/des. And some drives are coming out with it in firmware. Does anyone like the cost, closed-source, and trust model of such hardware? > atacontrol I'm partly up against this because some failing drives are negotiating lower speeds for themselves. Never thought of is as a test tool though. > Pata doesn't do error detection on the control info ZFS handles that and informs user about silent corruption. Precisely because of the chained checksums. It's quite addicting. http://www.opensolaris.org/os/community/zfs/ Your little to no overhead for ffs sounds right as always.
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