Cray User Group Directory of User-submitted Software

Title DMF-fallback mechanism
Revision
Purpose Media Groups and fallback mechanism in DMF-daemon to handle MSP failures
Package type modset
Application area operating system
Abstract Fallback mechanism enables the DMF-daemon to handle MSP failures. When a MSP in unable to migrate a file, this would result in a failed put request. If Media Groups are defined, the fallback mechanisme provides a method to migrate to another MSP.
Submittor SARA
Contact SARA
Phone +31 20 5923000
Email walet@sara.nl
Company/
Institution
Academic Computing Services Amsterdam (SARA)
PO Box 4613
1009 AP Amsterdam
The Netherlands
CUG Site Code SARA
Distribution method contact:
Andre Walet
PO Box 4613
1009 AP Amsterdam
The Netherlands
URL
Distribution restrictions UNICOS sites only
Copyright Cray Reasearch Inc.
License required Unicos Source Licence
License fee n.a.
Hardware
Operating System UNICOS 6.1, UNICOS 7.0 (DMF 2.0)
Compiler(s) scc
Program support when schedule permits
Documentation README file
Portability to other UNIX systems
Additional comments In Sara's data migration environment, we have an FTP-MSP as primary MSP. Since this is an network MSP, and therefore potentially unreliable, we use Media Groups as a method to fallback upon Cray's tape msp (dmtpmsp) on network failures.
DDocumantation consists of a Readme File in ascii format. It could be sent upon request.

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Last update: July 7, 1999