Interesting. We were looking at the same document. The one you pointed me to is
from November 17, 2006 and the one I was reading is from May, 2008, which
specifically states:
- The DASD device driver now handles aliases for block devices for you. A
mulipath setup is no longer required for PAV.
- The DASD device driver supports PAV and HyperPAV.
Has this DASD device driver not implemented in RHEL5 as of yet?
Tyler
Klaus Bergmann
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ibm.com> To
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<[EMAIL PROTECTED]
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Re: Confused about PAV and linux
11/07/2008 03:33 AM
Please respond to
Linux on 390 Port
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T.EDU>
You need the multipath tools, here is a description of the setup:
http://download.boulder.ibm.com/ibmdl/pub/software/dw/linux390/docu/l26chp01.pdf
In the future zLinux will support HyperPAV. Then the DASD-driver controls
the dynamic assignment of the aliases w/o involvement of the multipath
tools. This, in combination with the DS8000 storage pool striping
technology, helps to avoid bottlenecks in the disk-subsystem.
Klaus Bergmann
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