IJ22763: UNLINKING FILESET LEAD TO QUIESCE WHEN TCT RECALL IS IN PROGRESS

APAR status

• Closed as program error.

Error description

• When mmunlinkfileset was issued while a transparent
  recall
  was ongoing a TCT hung situation occurs.
  
  Long waiters are visible:
  
  Waiting 5724.6495 sec since 17:12:56, monitored, thread
  169068 TSUnlinkFileSetCmdThread: for In kernel waiting to
  quiesce fileset
  Waiting 5643.2355 sec since 17:14:18, ignored, thread
  172603 TSLsFilesetCmdThread: on ThCond 0x55D96BFD13E0
  (Perm2RunQueueCondvar), reason 'waiting for permission to
  run'
  Waiting 4804.9600 sec since 17:28:16, ignored, thread
  184035 TSLsFilesetCmdThread: on ThCond 0x7F6448001970
  (Perm2RunQueueCondvar), reason 'waiting for permission to
  run'
  Waiting 3967.1388 sec since 17:42:14, ignored, thread
  172604 TSLsFilesetCmdThread: on ThCond 0x7F6480D4E3B0
  (Perm2RunQueueCondvar), reason 'waiting for permission to
  run'
  
  Reported In:
  Spectrum Scale 5.0.4.2
  
  Known Impact:
  filesystem hung - even mm-commands can't run be run
  anymore
  

Local fix

Problem summary

• When a TCT transparent recall is in progress and
  a fileset unlink command is issued, it can result in system hang
  

Problem conclusion

• Hang won't be seen.
  

Temporary 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

• Fixed component name

  SPEC SCALE DME

• Fixed component ID

  5737F34AP

Applicable component levels