IC98720: MIRROR CHUNK IS MARKED DOWN ON HDR SECONDARY AFTER ADDING CHUNK ON PRIMARY

APAR status

• Closed as user error.

Error description

• Mirror chunk is marked down on HDR Secondary after adding chunk
  on primary with:
  onspaces -a DBSPACE -p CHUNKPATH -o OFFSET -s SIZE -m
  MIRRORCHUNKPATH OFFSET
  
  Mirror Chunk on primary is fine.
  Messages on primary:
  01/09/14 14:05:45  Chunk Number 24 -
  '/opt/informix/chunks/ddm_basis_1_4' -- Recovery
  Begins(0xe32e6940)
  01/09/14 14:05:45  Checkpoint Completed:  duration was 0
  seconds.
  01/09/14 14:05:45  Thu Jan  9 - loguniq 10047, logpos
  0xa9c71e0,
  timestamp: 0xc648da1c Interval: 62056
  
  01/09/14 14:05:45  Maximum server connections 203
  01/09/14 14:05:45  Checkpoint Statistics - Avg. Txn Block Time
  0.000, #
  Txns blocked 0, Plog used 0, Llog used 2
  
  01/09/14 14:12:27  Chunk Number 24 -
  '/opt/informix/chunks/ddm_basis_1_4' -- Online
  
  No messages on HDR Secondary
  

Local fix

• Refresh (Full Restore) HDR Secondary with ontape...
  

Problem summary

Problem conclusion

Temporary fix

Comments

• On an HDR or RSS secondary server, the user needs to perform
  mirror recovery on a newly-added mirror chunk manually.  (On SDS
  secondary servers the process happens automatically.)  The need
  for manual mirror recovery is documented here:
  http://www-01.ibm.com/support/knowledgecenter/SSGU8G_11.70.0/com
  .ibm.admin.doc/ids_admin_0940.htm
  in the section
  "Informix Servers 11.70.0>Administering>System
  administration>Administrator's Guide>High availability and
  scalability>Cluster administration>Performing basic
  administration tasks>Use and change mirroring of chunks"
  In order to avoid similar confusion in the future,  HDR and RSS
  servers in future releases of the Informix 11.70 and 12.10
  server will raise an alarm with class id 4 and event id 4005 to
  remind the user to perform mirror recovery.  The alarm is
  described here:
  http://www-01.ibm.com/support/knowledgecenter/SSGU8G_11.70.0/com
  .ibm.adref.doc/ids_adr_0676.htm
  in section "Informix Servers 11.70.0>Administering>System
  administration>Administrator's Reference>Appendixes>Event
  Alarms>Event alarm IDs"
  

APAR Information

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

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

Fix information

Applicable component levels