Andi Kleen wrote:
My personal wish list feature would be a little forwarder driver
to forward /dev/hd* to /dev/sd* for this; then old IDE could be
disabled without risking breaking old root file systems.
That's on the long-term TODO list.
libata is moving towards making libata-scsi an optional module (will
always be around for ATAPI, and for compat with current ATA), and
driving ATA disks as a native block driver, rather than having SCSI do
the work for us.
libata's qc_issue/qc_complete high level API and internal modularity
were designed to make this possible. It is easy to see in the current
code how libata-scsi is merely a user of the qc_issue/qc_complete API,
with all the low-level details isolated away from that module.
Addendum: Remember too, /dev/hdX is not just a major/minor pair, but a
userspace interface, complete with expected ioctl support.
Jeff
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