Oracle HSM (SAM-QFS): Bug Fixes Needed For Distributed I/O (distio) Feature (Doc ID 2108565.1)

Last updated on AUGUST 31, 2017

Applies to:

Oracle Hierarchical Storage Manager (HSM) and StorageTek QFS Software - Version 5.4 and later
Information in this document applies to any platform.

Symptoms

With the HSM 5.4 release a feature of Distributed I/O was provided. This feature allows HSM to distribute the tape I/O to other SAM Solaris clients for higher bandwidth.

However, a number of different issues were found with the initial release of this new feature.  Those issues include many different distio hang scenarios, I/O errors, distributed IO not used for rescheduled large archive requests, and distio not recognizing an 'arstop' was done on the MDS, among other things.

Cause

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