IJ40942: ADD FLEXCTL SUPPORT TO VFC CLIENT ADAPTER DRIVER (VFC_KPROC) APPLIES TO AIX 7200-05

APAR status

• Closed as program error.

Error description

• ****************************************************************
  * USERS AFFECTED:
  * Systems running the 7200-05 Technology Level with
  * any of the following filesets at or between the given levels:
  * MIN          MAX          FILESET
  * 7.2.5.0      7.2.5.104    devices.vdevice.IBM.vfc-client.rte
  ****************************************************************
  * PROBLEM DESCRIPTION:
  * Kernel thread latency may be high in certain scenarios
  * thereby impacting IO performance in VFC client driver
  * (vfc_kproc)
  ****************************************************************
  * RECOMMENDATION:
  * Update to AIX 7200-05-05-2246 or later.
  ****************************************************************
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:
  * Systems running the 7200-05 Technology Level with
  * any of the following filesets at or between the given levels:
  * MIN          MAX          FILESET
  * 7.2.5.0      7.2.5.104    devices.vdevice.IBM.vfc-client.rte
  ****************************************************************
  * PROBLEM DESCRIPTION:
  * Kernel thread latency may be high in certain scenarios
  * thereby impacting IO performance in VFC client driver
  * (vfc_kproc)
  ****************************************************************
  * RECOMMENDATION:
  * Update to AIX 7200-05-05-2246 or later.
  ****************************************************************
  

Problem conclusion

• Added flexctl support to vfc_kproc threads
  

Temporary fix

Comments

• 7200-05 - use AIX APAR IJ40942
  7300-01 - use AIX APAR IJ41274
  

APAR Information

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

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

  IJ41274 IJ42206

Fix information

• Fixed component name

  AIX V7.2

• Fixed component ID

  5765CD200

Applicable component levels

• R720 PSY U887383

     UP22/11/14 I 1000