On Sun, 21 Jul 2013 13:19:11 -0400 Kenneth R Westerback <[email protected]> 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). # /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
