LI78901: CLONING MAY FAIL WHEN SOURCE GUEST HAS X-END MOD54 MINIDISK

APAR status

• Closed as fixed if next.

Error description

• When cloning a guest from a guest/prototype,  if the
  source guest has a large minidisk - a mod54  for example that is
  defined to use most or all of that volume by defining as x-END,
  it may fail in the middle of the copy and therefore cause the
  clone to fail:
  
  API call returned RC: 8
  ...
  Copy failed with RC: 8
  ...
  BTS Workunit: Clone z/VM Guest xxxxx, Request: Clone
  MDISK from xxxxx (WN2V) xxxx to xxxxx (WN2V) xxxxSize:
  xxxxx Cyls ended
  ...
  
  The logs from this timeframe will contain:
  ...
  11/11/2015 11:38:27 com.CSL.WAVE.BTS.Services.BTSMasterService$2
    11/11/2015 11:38:27 Service Machine : Send command SM_DDR_COPY
  parms xxxxxxxxx
  11/11/2015 11:38:27 com.CSL.WAVE.BTS.Services.BTSMasterService$2
  11/11/2015 11:38:27 Service Machine : Read answer for
  SM_DDR_COPY
  ...
  11/11/2015 12:08:27 com.CSL.WAVE.BTS.Services.BTSMasterService$2
  Communication error caused by: java.net.SocketTimeoutException:
  Read timed out ....
  
  Impact: Fails to clone the source guest to a new guest.
  

Local fix

• If the minidisk definition is changed from x-END to x-(actual
  ending address),  the SMAPI interface gets used instead of the
  internal processing to handle 'END' - and the copy will succeed
  without timeout.
  
  So for a mod54 - x-END should change to x-65520.
  

Problem summary

• When cloning a guest from a guest/prototype, if the source guest
  has a large minidisk that is defined to use most or all of the
  volume by specifying x-END, it may fail in the middle of the
  copy and cause the clone to fail.  This is due to a hardcoded
  timeout value that is too low to accomodate the copy.
  
  This defect is resolved in a future release of the product.
  

Problem conclusion

Temporary fix

• See the Local Fix.
  

Comments

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

• R120 PSY

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