IV87385: SFSIREADX() RETURNS INCORRECT SPARSE INFORMATION

APAR status

• Closed as program error.

Error description

• Home returns incorrect sparse information when diskaddrs
  changes are not yet reflected in the indirect block
  (addrDirty is true) because flush flag is not acquired to
  synchronize with steal or sync. This causes cache to read
  file from home as sparse file.
  

Local fix

• see level2
  

Problem summary

• Home returns incorrect sparse information when diskaddrs
  changes are not yet reflected in the indirect block
  (addrDirty is true) because flush flag is not acquired to
  synchronize with steal or sync. This causes cache to read
  file from home as sparse file.
  

Problem conclusion

• Fixed the code by acquiring the flushFlag to prevent sync
  or steal from flushing a buffer, updating an indirect block
  (commitAssigned) and removing the buffer from the list in
  between the call to nextDataBlock and iterating over buffer
  descriptors for checking dirty buffers.
  

Temporary fix

Comments

APAR Information

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

  IV87383

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

Fix information

• Fixed component name

  SPECTRUM SCALE

• Fixed component ID

  5725Q01AP

Applicable component levels

• R411 PSY U884675

     19/04/30 I 1000