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DS8800 Performance Monitoring and Tuning
book

DS8800 Performance Monitoring and Tuning

by Gero Schmidt, Bertrand Dufrasne, Jana Jamsek, Peter Kimmel, Hiroaki Matsuno, Flavio Morais, Lindsay Oxenham, Antonio Rainero, Denis Senin
July 2012
Intermediate to advanced content levelIntermediate to advanced
726 pages
26h 28m
English
IBM Redbooks
Content preview from DS8800 Performance Monitoring and Tuning
Chapter 12. Performance considerations for Linux 455
extents (LEs) to physical extents (PEs) within a volume group. An LV can be created with a
size from one extent to all available extents in a VG.
With LVM2, you can influence the way that LEs (for a logical volume) are mapped to the
available PEs. With LVM linear mapping, the extents of several PVs are concatenated to build
a larger logical volume. Figure 12-4 illustrates a logical volume across several physical
volumes. With striped mapping, groups of contiguous physical extents, which are called
stripes, are mapped to a single physical volume. With this functionality, it is possible to ...
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Publisher Resources

ISBN: 0738436836Purchase book