[Stgt-devel] Question about the basic concept of SCSI layer and Block layer

Ming Zhang blackmagic02881
Wed May 23 16:00:18 CEST 2007

On Wed, 2007-05-23 at 21:55 +0800, jidong xiao wrote:
> Hi,All,
>   I have a question, what's the relationship between SCSI layer and
> Block layer?I remember initially there are three types of device
> drivers, say, char device driver, block device driver, network device
> driver, so there is a directory "drivers/block",but recent years,most
> part of the code for block devices have been moved out of the
> directory drivers/block, but there is still a block I/O layer, so I am
> wondering what's the relationship between Block layer and other
> subsystem, like how to connect block layer and filesystem(VFS or the
> actually file system), how to bridge it with scsi layer, for example,
> the scsi disk driver, sd.o. Who can please kindly explain this for me,
> thank you very much!

u had better send these questions to kernel newbie or scsi list. the
other 2 you included are not related at all.

> Best Regards
> Jason
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