First glimpse at shingled drives

Session information has not yet been published for this event.

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Refereed Talks
50 Minute Talk
Scheduled: Wednesday, October 15, 2014 from 3:30 – 4:20pm in Room 14

One Line Summary

Anyone interested in modern storage technologies and trends.

Abstract

Recently storage vendors have advocated ‘shingled media recording’ devices. These drives are estimated to provide larger capacity than existing drives, but at the same time introduce a new access model. Hence it will not be possible to use them as all-purpose drives without modifications to the storage stack. For Linux there are two different proposals for handling these devices, either by using modified filesystems or by adding a device-mapper module.
This talk gives an overview about the technology behind shingled media recording and the proposed changes to the linux storage stack.
I will also present the results from running a modified stack on a pre-production device and its implications for further development.

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Speaker

  • Hannes Reinecke

    SUSE Labs

    Biography

    Studied Physics with main focus image processing in Heidelberg from 1990 until 1997, followed by a PhD in Edinburgh ’s Heriot-Watt University in 2000. Worked as sysadmin during the studies, mainly in the Mathematical Institute in Heidelberg. Now working at SUSE Labs with focus on storage and mainframe. Principal contact point for storage related issues on SLES.

    Linux addict since the earliest days (0.95); various patches to get Linux up and running. Main points of interest are storage, (i)SCSI, FC/FCoE, and multipathing. And S/390, naturally.

    I’m active on the Linux SCSI mailing list, reviewing patches and dusting out murky corners in the SCSI stack. Plus occasionally maintaining the aic79xx driver.

    Played around with kvm/qemu; I’ve implemented the megasas HBA emulation for qemu.