On 02/25/10 11:23, Markus Armbruster wrote:
You're supposed to use scsi-generic for that. Which rejects anything
but /dev/sg*.
Well, it isn't *that* easy. The SG_IO ioctl used by scsi-generic works
on tons of devices in linux, not only /dev/sg*. I've seen patches
floading around which change the check bdrv_is_sg() into "try SG_IO and
see if it works", which would allow to use /dev/sda with both scsi-disk
and scsi-generic depending on what you want. Which makes alot of sense.
Making that change needs some extra care though to avoid existing
configurations switching from scsi-disk to scsi-generic unnoticed.