A fix is available
APAR status
Closed as program error.
Error description
Scalable Volume Groups use 254 MWC records instead of 510 during writes.
Local fix
Problem summary
SVGs are only using 254 mwc rec entries instead of the potential 510 that we allocate space for. The affect of this is that for active MWC LVs, you can essentially only be writing to 254 LTGs at once instead of 510. This could be limiting performance capabilities with some workloads.
Problem conclusion
Correct mwc rec size definitions to properly use all 510 slots.
Temporary fix
Comments
5300-12 - use AIX APAR IV53135 6100-07 - use AIX APAR IV58301 6100-08 - use AIX APAR IV57885 6100-09 - use AIX APAR IV50542 6100-09 - use AIX APAR IV50542 6100-09 - use AIX APAR IV50542 7100-01 - use AIX APAR IV57583 7100-02 - use AIX APAR IV49870 7100-03 - use AIX APAR IV50830
APAR Information
APAR number
IV50830
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2013-10-15
Closed date
2013-10-15
Last modified date
2014-08-14
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
U866400
Fix information
Fixed component name
AIX V7.1
Fixed component ID
5765H4000
Applicable component levels
R710 PSY U866400
UP14/05/22 I 1000
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Document Information
Modified date:
14 August 2014