IV85733: VARYONVG HANG IN SCSIDISK_CLOSE() DURING BOOT APPLIES TO AIX 7100-04

APAR status

• Closed as program error.

Error description

• Close of a scsidisk may hang if another disk is opened
  simultaneously. This has been seen to cause boots to hang
  intermittently during automatic varyon of volumegroups
  if rootvg is on internal scsi disk, and other VGs are
  on SAN disk.
  

Local fix

Problem summary

• Closing a disk, or varyoffvg might hang.
  

Problem conclusion

• Correcetd the code to avoid the hang in such scenarios of
  parallel open, and close.
  

Temporary fix

Comments

• 6100-09 - use AIX APAR IV85670
  7100-04 - use AIX APAR IV85733
  7200-01 - use AIX APAR IV85700
  

APAR Information

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

  IV83987

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

Fix information

• Fixed component name

  AIX V7.1

• Fixed component ID

  5765H4000

Applicable component levels

• R710 PSY U875368

     UP16/12/12 I 1000