January 2006
Intermediate to advanced
226 pages
6h 11m
English
book
Linux for IBM System z9 and IBM zSeries
by Gregory Geiselhart, Robert Brenneman, Eli Dow, Klaus Egeler, Torsten Gutenberger, Bruce Hayden, Livio Sousa
Content preview from Linux for IBM System z9 and IBM zSeries
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Chapter 5. FCP-attached SCSI disks 175
zfcp: unit erp failed on unit 0x5211000000000000 on port 0x5005076300cd9589
on adapter 0.0.b006
Remember, without the access control feature it was possible to access any LUN
in read/write mode (assuming a running physical connection, correct masking,
zoning and binding definitions) as long as this LUN was not accessed by another
linux images using the same FCP channel. Using different physical FCP
channels, the same LUN could even be read/write accessed by several Linux
images.
5.5 Multipathing for SCSI disks
In this section, we look at using multipathing with SCSI disks on Linux for
zSeries. In gener
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