APAR status
Closed as program error.
Error description
Under rare circumstances the server may hang during data movement processes. This can include reclamation and the the backup stgpool operation but does not include others like export and generate backupset. The timing window is exposed when the server is attempting to process data that has been stored in a format other than NATIVE. For instance, a non-block storage pool can be susceptible to the hang situation. The process(es) can get into hang situation when an attempt is made to switch from an optimized copy to a non-optimized copy due to the data format. A SHOW THREADS can be issued to verify the hang condition as the reclamation process will show the following thread states: Thread 245, Parent 244: AfRclmVolumeThread, Storage 782337, AllocCnt 1569 HighWaterAmt 852837 tid=26f5, ptid=25f4, det=1, zomb=0, join=0, result=0, sess=0 Awaiting cond sessP->aux_1IdleCond (0x112491840), using mutex sessP->mutex (0x1134a9a38), at sstrans.c(11345) Stack trace: 0x09000000005c0c10 _cond_wait_global 0x09000000005c179c _cond_wait 0x09000000005c248c pthread_cond_wait 0x0000000100007eb4 pkWaitConditionTracked 0x000000010071f9f4 WaitSourceIdle 0x00000001007180a8 OptimizedCopyNC 0x0000000100716d14 ssCopy 0x0000000100866750 RelocateBitfile 0x00000001008634b0 MoveBatch 0x000000010085b3b8 MoveVolume 0x000000010085a238 AfMoveVolume 0x000000010096d288 AfRclmOnsiteVols 0x000000010096b088 AfRclmVolumeThread 0x0000000100009d68 StartThread Thread 246, Parent 245: SsSWThread, Storage 142395, AllocCnt 709 HighWaterAmt 226848 tid=24f6, ptid=26f5, det=1, zomb=0, join=0, result=0, sess=0 Awaiting cond sinkCtlP->snkBeginCond (0x112491450), using mutex sessP->mutex (0x1134a9a38), at ssswtr.c(1688) Stack trace: 0x09000000005c0c10 _cond_wait_global 0x09000000005c179c _cond_wait 0x09000000005c248c pthread_cond_wait 0x0000000100007eb4 pkWaitConditionTracked 0x0000000100619444 SsSWThread 0x0000000100009d68 StartThread Thread 248, Parent 245: SsAuxSrcThread, Storage 80365, AllocCnt 1153 HighWaterAmt 168207 tid=27f8, ptid=26f5, det=1, zomb=0, join=0, result=0, sess=0 Awaiting cond sessP->mediaSentCond (0x11248e200), using mutex sessP->mutex (0x1134a9a38), at sstrans.c(5653) Stack trace: 0x09000000005c0c10 _cond_wait_global 0x09000000005c179c _cond_wait 0x09000000005c248c pthread_cond_wait 0x0000000100007eb4 pkWaitConditionTracked 0x0000000100721ea4 SsSendMediaMount 0x00000001003883ec AsOpenSeg 0x0000000100722e44 DoOpenSeg 0x00000001007209f4 AuxAsSource 0x0000000100720498 SsAuxSrcThread 0x0000000100009d68 StartThread NOTE: If the platform does not support the callstack display for SHOW THREADS, an OS level command may be available such as PSTACK (linux and Solaris) Initial Impact: Medium . Tivoli Storage Manager Versions Affected: Tivoli Storage Manager Server version 6.2 . Additional Keywords: TSM zz62 nonblock hang hung native volumes
Local fix
Add DISABLEOPTIMIZEDCOPY to the dsmserv.opt file and stop and restart tsm server process/service.
Problem summary
**************************************************************** * USERS AFFECTED: All Tivoli Storage Manager server users. * **************************************************************** * PROBLEM DESCRIPTION: See ERROR DESCRIPTION. * **************************************************************** * RECOMMENDATION: Apply fixing level when available. This * * problem is currently projected to be fixed * * in levels 6.2.1.2 and 6.2.2 . * * Note that this is subject to change at the * * discretion of IBM. * **************************************************************** See ERROR DESCRIPTION.
Problem conclusion
The described problem has been resolved.
Temporary fix
Comments
APAR Information
APAR number
IC69900
Reported component name
TSM SERVER
Reported component ID
5698ISMSV
Reported release
62A
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-07-14
Closed date
2010-08-02
Last modified date
2010-09-23
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
TSM SERVER
Fixed component ID
5698ISMSV
Applicable component levels
R62A PSY
UP
R62H PSY
UP
R62L PSY
UP
R62S PSY
UP
R62W PSY
UP
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGSG7","label":"Tivoli Storage Manager"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"62A","Edition":"","Line of Business":{"code":"LOB26","label":"Storage"}}]
Document Information
Modified date:
23 September 2010