FUJITA Tomonori wrote:
month. We discussed it with Christoph and decided that it would be
better to start from scratch because of the design differences.
Some of the things we are trying to improve upon are things that are
better supported in 2.6. Some differences:
- We will support controller hotplug.
- We allow any type of device (dm, scsi, ide, LVM@ etc) as storage. And
we do not want hook into SCSI-ml's upper layer drivers and deal with
that refcounting if we can help it so we push a lot of code to userspace
and only do reads and writes in the kernel.
- We also hope to support any block layer target.
- As mentioned before, scatterlists by using the block layer's support.
There may be more that I am forgetting, but originally we started out by
trying to clean up the SCST code for 2.6 and make it resemble SCSI-ml's
hotplug model. As we did this it looked like some code could live in
userspace and it would end up being a rewrite becuase there was so much
to do so we started a new project. We hope to work with Vlad and the
SCST developers.
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