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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.

Speakers
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Hannes Reinecke

Senior Engineer, SUSE Labs
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. | | Linux addict since the earliest days (0.95); various patches to get | Linux up and running. Main points of interest are storage, (i)SCSI, | FCoE, and multipathing. And...
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Wednesday April 17, 2013 9:00am - 10:00am
Market Street

Attendees (5)

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