On Mon, Feb 10, 2020 at 12:01:13PM -0600, Muhammad Ahmad wrote: > Background: > As the capacity of HDDs increases so is the need to increase > performance to efficiently utilize this increase in capacity. The > current school of thought is to use Multi-Actuators to increase > spinning disk performance. Seagate has already announced it’s SAS > Dual-Lun, Dual-Actuator device. [1] > > Discussion Proposal: > What impacts multi-actuator HDDs has on the linux storage stack? > > A discussion on the pros & cons of accessing the actuators through a > single combined LUN or multiple individual LUNs? In the single LUN > scenario, how should the device communicate it’s LBA to actuator > mapping? In the case of multi-lun, how should we manage commands that > affect both actuators? What ground does this cover that wasn't discussed a couple of years ago at LSFMM? https://lwn.net/Articles/753652/ Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx
