Date: Sun, 19 Aug 2007 21:41:47 -0400 From: Howard Goldstein <hg@queue.to> To: freebsd-geom@freebsd.org Subject: Re: graid5, 3 consumers, unaligned access Message-ID: <46C8F15B.6020300@queue.to> In-Reply-To: <46C8F08E.4090108@queue.to> References: <46C8F08E.4090108@queue.to>
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Howard Goldstein wrote: > Due to a bug in the twe driver I've noticed quite a few accesses to the > graid5 consumer that aren't on 512 byte boundaries. These are all 3 > identical drives with identical geometries. The unaligned accesses Identical geometries as far as fdisk thought, but not geom. Could this be the problem? twed0 is the device that has an issue with unaligned access cally:/usr/src/sys/geom/raid5$ geom disk list Geom name: ad5 Providers: 1. Name: ad5 Mediasize: 163928604672 (153G) Sectorsize: 512 Mode: r1w1e3 fwsectors: 63 fwheads: 16 Geom name: ad8 Providers: 1. Name: ad8 Mediasize: 320072933376 (298G) Sectorsize: 512 Mode: r6w6e9 fwsectors: 63 fwheads: 16 Geom name: ad10 Providers: 1. Name: ad10 Mediasize: 320072933376 (298G) Sectorsize: 512 Mode: r6w6e9 fwsectors: 63 fwheads: 16 Geom name: twed0 Providers: 1. Name: twed0 Mediasize: 320072933376 (298G) Sectorsize: 512 Mode: r4w4e6 fwsectors: 63 fwheads: 255
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