IJ09705: POSSIBLE UNDETECTED DATA LOSS WITH POWER9 NVME APPLIES TO AIX 7100-05

APAR status

• Closed as program error.

Error description

• **************************************************************
  * USERS AFFECTED:
  * Systems running the AIX 7100-04 Technology Level
  * with devices.chrp.vdevice.rte below the 7.1.4.31 level or
  * devices.chrp.pci.rte below the 7.1.4.31 level.
    **************************************************************
  * ERROR DESCRIPTION:
  * Possible undetected data loss can occur with the optional
  * Power9 NVMe feature.  We have seen this issue occur under
  * heavy I/O stress. We have not seen this occur when the NVMe
  * devices are used for boot devices and non-intensive
  * workloads as recommended in the feature descriptions in the
  * Power9 NVMe RFA.  This only affects the VIOS/AIX LPAR(s)
  * using the NVMe devices.
    **************************************************************
  * RECOMMENDATION:
  * Install APAR IJ09705.
  * Prior to fix availability, an interim fix is available from
  * either
  * ftp://aix.software.ibm.com/aix/ifixes/ij09705/
  * https://aix.software.ibm.com/aix/ifixes/ij09705/
  * Installation of the ifix requires a reboot.
    **************************************************************
  

Local fix

Problem summary

• Data miscompare/corruption.
  

Problem conclusion

• Fix issue in pci_busdd
  

Temporary fix

Comments

• 7100-05 - use AIX APAR IJ09705
  7200-03 - use AIX APAR IJ09686
  

APAR Information

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

  IJ09686

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

  U883490

Fix information

• Fixed component name

  AIX V7.1

• Fixed component ID

  5765H4000

Applicable component levels

• R710 PSY U883490

     UP18/11/27 I 1000 Ž