IJ48127: AIX7.3 EXTENDVG OF CONVERTED SVG FAILS WITH INCORRECT MAXPPS MSGAPPLIES TO AIX 7300-01

APAR status

• Closed as program error.

Error description

• In AIX 7.3, extendvg of a scalable volume group, that was
  converted from a big VG,  fails with incorrect maxpps
  message.
  
  The sample error message will look like this:
  
  #extendvg testvg hdisk1
  0516-1254 extendvg: Changing the PVID in the ODM.
  0516-1714 extendvg: The total number of partitions on the
  disks for this
          volume group would be 9596, which exceeds the
  current maxpps
          value of 5080.  Increase the maxpps value to
  10160 using
          the chvg -P command, then retry.
  0516-792 extendvg: Unable to extend volume group.
  

Local fix

• Varyoffvg and varyonvg the volumegroup then doing the
  extendvg will work
  

Problem summary

• chvg -G is not updating the kernel max pps values for the
  volume group.  This can affect later operations, done before
  varyoff/varyon.. for example extendvg to a larger disk may
  fail with an error about not enough pps.
  

Problem conclusion

• Add logic to chvg -G to update kernel max pps values
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IJ46305

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  AIX V7.3

• Fixed component ID

  5765CD300

Applicable component levels