Direct links to fixes
8.1.7.000-IBM-SPSRV-Linuxppc64le
8.1.7.000-IBM-SPCMS-WindowsX64
8.1.7.000-IBM-SPCMS-WindowsI32
8.1.7.000-IBM-SPCMS-Linuxx86_64
8.1.7.000-IBM-SPOC-WindowsX64
8.1.7.000-IBM-SPOC-Linuxx86_64
8.1.7.000-IBM-SPOC-Linuxs390x
8.1.7.000-IBM-SPOC-LinuxPPC64le
8.1.7.000-IBM-SPOC-AIX
8.1.7.000-IBM-SPSRV-WindowsX64
8.1.7.000-IBM-SPSRV-Linuxx86_64
8.1.7.000-IBM-SPSRV-Linuxs390x
8.1.7.000-IBM-SPSRV-AIX
IBM Spectrum Protect Server V8.1 Fix Pack 7 (V8.1.7) Downloads
APAR status
Closed as program error.
Error description
Problem Description: Client-side data deduplication backup might be run with non data deduplication after that unsuccessful DEDUP message was logged. ANS0266I dsmEndTxn vote is ABORT, check the source field. ANS7899E The client referenced a deduplicated extent that does not exist on the IBM Spectrum Protect server ANS9389W The DEDUP backup attempt was unsuccessful for virtual machine 'vmname'. Retry #1 with DEDUP disabled. The issue can occur on non-VM backups also. IBM Tivoli Storage Manager/IBM Spectrum Protect Versions affected: IBM Spectrum Protect Server all supported versions for all platforms Additional Keywords: backup; dedup; TS001194103 Customer/L2 Diagnostics (If Applicable) Capture the server trace with enabling SDCREATE SDDEDUP SDRTRV SDDEL SDCLOUD SDCLOUDDETAIL SDUTIL IMEXP IMDEL. Example: At beginning, refCount of chunk -1400104815834537494 was 1881890. 06:31:19.779 [79][sddedup.c][1483][sdFindChunkInPool]:This is a query session 06:31:19.991 [79][sddedup.c][3211][FindChunkInDB]:Chunk -1400104815834537494 is a match based on refCount of 1881890 During backup session, chunk -1400104815834537494 cannot be used as the base chunk because refcount 2139554 is higher than sdMaxRefCountForLinkage. Backup session: 06:31:28.499 [101][sddedup.c][3145][FindChunkInDB]:Evaluating chunk -7818607152539614344 for SHA1 C457CAC9 06:31:28.499 [101][sddedup.c][3159][FindChunkInDB]:Chunk -7818607152539614344 is not a match based on maximum number of references encountered 2011798 ................................. 06:31:28.708 [101][sddedup.c][3159][FindChunkInDB]:Chunk -1400104815834537494 is not a match based on maximum number of references encountered 2139554 06:31:28.709 [101][sddedup.c][3317][FindChunkInDB]:Exit: rc=1116, no match found - poolId 8, chunkSize 50002, SHA1 C457CAC9, chunkId 0, flags 0, compressed True. Between time 06:31:19.991 and 06:31:28.708, chunk -1400104815834537494 refcount increased and reached max refcount number. So there is a timing window between query session and real backup session. Initial Impact: middle
Local fix
Setting the option "sdMaxRefCountForLinkage" decreases the possibility happening the issue, but it does not resolve it completely. The default value is 2000000. setopt sdMaxRefCountForLinkage 3000000
Problem summary
**************************************************************** * USERS AFFECTED: * * All IBM Spectrum Protect server users. * **************************************************************** * PROBLEM DESCRIPTION: * * See error description. * **************************************************************** * RECOMMENDATION: * * Apply fixing level when available. This problem is currently * * projected to be fixed * * in level 8.1.7. Note that this is subject to change at the * * discretion of IBM. * ****************************************************************
Problem conclusion
This problem was fixed. Affected platforms for reported release: AIX, Linux, and Windows. Platforms fixed: AIX, Linux, and Windows.
Temporary fix
Comments
APAR Information
APAR number
IT26719
Reported component name
TSM SERVER
Reported component ID
5698ISMSV
Reported release
81W
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-10-24
Closed date
2018-11-15
Last modified date
2018-11-15
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
[{"Line of Business":{"code":"LOB26","label":"Storage"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGSG7","label":"Tivoli Storage Manager"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"81W"}]
Document Information
Modified date:
13 February 2021