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Wednesday, April 17 • 9:00am - 10:00am
Host-Based Disk-Mirroring with MD on Mainframe - Hannes Reinecke, SUSE

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Disk-mirroring is a standard feature of basically every OS today. However, these solutions cover built-in disks only.For remotely connected disks eg via FibreChannel or iSCSI the situation changes.
Normally every I/O error is being treated as an fatal error, requiring manual interaction to replace the disk.With remote or SAN-attached disks transient I/O errors might occur, requiring a more careful I/O handling. This is especially true on mainframe, where the standard 'DASD' driver might undergo a rather lengthy recovery routine on errors.
In this talk I will give an overview on the challenges when implementing such a solution and present the 'md_monitor' program for handling transient I/O errors on MD mirror setups.

avatar for Hannes Reinecke

Hannes Reinecke

Team lead Storage & Networking, SUSE Linux GmbH
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. | Now working at SUSE Labs with focus on storage and mainframe. Principal contact point for storage related issues on SLES. | Currently I'm working on dusting out murky corners of the linux SCSI stack, and trying to get SMR drives to ... well, not exactly fly, but at least moving at a... Read More →

Wednesday April 17, 2013 9:00am - 10:00am
Market Street

Attendees (5)