December 2005
Intermediate to advanced
284 pages
7h 14m
English
book
Configuration and Tuning GPFS for Digital Media Environments
by Octavian Lascu, Andreas Lüngen, Dag Wieers, Dino Quintero
Content preview from Configuration and Tuning GPFS for Digital Media Environments
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Chapter 2. Introduction to GPFS 39
The number of regions is set at file system creation time by the parameter that
specifies how many GPFS nodes will access this file system. The regions are
separately locked and, as a result, different nodes can be allocating or
de-allocating space represented by different regions independently and
concurrently.
Figure 2-5 shows the dependencies between file, GPFS block size, LUN and
array segment size, and the physical to logical relation.
Figure 2-5 Dependencies between file, GPFS block size, LUN and segment size
2.2.4 Token management and byte range locking
The file system manager allocates blocks of disk space ...
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