On Sat, Aug 03, 2013 at 01:09:24AM +0200, Robert wrote: > On Sun, 21 Jul 2013 13:19:11 -0400 > Kenneth R Westerback <kwesterb...@rogers.com> wrote: > > Disks with logical sector sizes other than 512-bytes are supported. > > I am unaware of any outstanding issues with support for 4K sector > > devices. > > .... Ken > > It's not possible to create softraid volumes (e.g. encryption) on 4k disks. > See also: http://marc.info/?l=openbsd-misc&m=136228918607382 > > http://www.openbsd.org/cgi-bin/man.cgi?query=bioctl&sektion=8&arch=&apropos=0&manpath=OpenBSD+Current > "Only devices with 512-byte sectors are supported." > > While some disks emulate their 4k sectors as 512b, some don't. > E.g., I have a WD "My Book 1140" 3TB external USB disk, which reports 4k. > Softraid doesn't work with it, I have to use vnd instead (for encryption). >
softraid volume are not 'disks' in the context of my statement. You are correct that those volumes do not support 4K-byte sector devices. Largely because the original author did not believe in the existance of 4K-byte sector devices devices. :-) .... Ken > # /dev/rsd6c: > type: SCSI > disk: SCSI disk > label: My Book 1140 > duid: 0000000000000000 > flags: > bytes/sector: 4096 > sectors/track: 63 > tracks/cylinder: 255 > sectors/cylinder: 16065 > cylinders: 45599 > total sectors: 732558336 > boundstart: 64 > boundend: 732547935 > drivedata: 0 > > kind regards, > Robert
