Re: [PATCH v8 0/5] Initial support for multi-actuator HDDs

On Thu, Sep 09, 2021 at 11:35:40AM +0900, Damien Le Moal wrote:

Single LUN multi-actuator hard-disks are cappable to seek and execute
multiple commands in parallel. This capability is exposed to the host
using the Concurrent Positioning Ranges VPD page (SCSI) and Log (ATA).
Each positioning range describes the contiguous set of LBAs that an
actuator serves.

This series adds support to the scsi disk driver to retreive this
information and advertize it to user space through sysfs. libata is
also modified to handle ATA drives.

This looks good, and easy for user space to make optimizations.

Reviewed-by: Keith Busch <kbusch@kernel.org>