IV59702: CHVG -G THROWS PV MISSING, QUORUM LOST ERRORS IN ERRPT

APAR status

• Closed as program error.

Error description

• When chvg -G is run on a concurrent volume group,
  it throws the below error entries in errlog.
  
  IDENTIFIER TIMESTAMP  T C RESOURCE_NAME  DESCRIPTION
  CAD234BE 0220223414 U H LVDD QUORUM LOST, VOLUME GROUP
  CLOSING
  F7DDA124 0220223414 U H LVDD PHYSICAL VOLUME DECLARED
  MISSING
  

Local fix

Problem summary

• For conc-capable or other multi-node-varyon-protection enabled
  VGs, after converting the VG to Scalable Type VG, using chvg
  -G, these errors will be seen in the errpt:  CAD234BE   U H
  LVDD           QUORUM LOST, VOLUME GROUP CLOSING F7DDA124   U H
  LVDD           PHYSICAL VOLUME DECLARED MISSING
  
  But no further impact will be seen unless the VG only has a
  single disk in it.  In this case, 'varyonvg' command will fail
  and have to be forced with -f flag.
  
  The reason is that the last step in chvg -G, to varyoff the VG,
  is initiating a metadata write to clear the 'varyon state' of
  the VG.  This write goes to the end of the newly expanded
  metadata area on disk, but the LVM kernel does not yet allow
  metadta writes to go that far, and fails the write.
  

Problem conclusion

• Correct chvg -G code to not try to clear the 'varyon state' of
  the VG, since it's not actually during chvg -G anyways.
  This avoids writing the metadata with the disk/driver in
  mismatched state, and avoids any errors.
  

Temporary fix

Comments

APAR Information

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

  IV56655

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

Fix information

• Fixed component name

  AIX5.2 WPAR F/A

• Fixed component ID

  5765H3800

Applicable component levels

• R110 PSY

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