BOF: Device Mapper for Shingle Magnetic Recording (SMR)

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60 Minute BoF
Scheduled: Thursday, August 20, 2015 from 5:00 – 6:00pm in Issaquah

One Line Summary

Approach and progress in developing a device mapper for SMR


Any problem in computer science can be solved with another layer of indirection. Shingle magnetic recording is no different – the only “difficulty” is to determine where to add the additional layer of indirection/abstraction to enable maximum flexibility and efficiency. Let’s go over the various SW/FW paradigms that attempt to abstract away SMR behavior (e.g. user space library, device mapper, SMR aware file system, enlightened application). Along the way, we will also explore what deficiencies are holding back SMR adoption in (e.g. ATA sense data reporting) the data center.


SMR, File Systems, Device Mapper


  • jim malina

    Western Digital


    Jim Malina is a Technologist of System Architecture at Western Digital. I’ve made a career finding simple solutions for complex problems. Currently evangelizing “storage stack” solutions for next generation of recording media. Previously at Texas Instruments Digital Light Processing, developing system solutions for light modulation devices in display and communication technologies. Began my career at Seagate’s R&D facility in Los Angeles.