|
Problem IT38004
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Status: Closed |
BACKUP USING DYNAMIC TARGET ALLOCATION CAN LEAVE BEHIND ORPHANEDFLASHCOPY PAIRS AND VOLUMES
|
| product: |
FLSHCPY DB2 AGE / 5608AC6DB / 81A - DB2 |
| Problem description: |
When running backup operations using IBM Spectrum Protect
Snapshot with Storwize V7000 and SAN Volume Controller
dynamic target allocation adapter (SVCDTA) for CIM
devices (DS8K,SVC,V7K) and using dynamic target allocation,
created target volumes and FlashCopy pairs and consistency
groups can be left behind orphaned instead of being removed
when the number of backup versions exceeded the value set
for the MAX_VERSIONS parameter and obsolete backups should be
deleted. This can happen when FLASHCOPY_TYPE parameter in the
IBM Spectrum Protect Snapshot profile is set to either
INCR or NOCOPY.
Customer/Support Diagnostics:
There are no visible errors or logs from the IBM Spectrum
Protect Snapshot side. The only symptom is to see more volumes
and FlashCopy mappings on the storage system than defined by the
MAX_VERSIONS parameter in the IBM Spectrum Protect Snapshot
profile. The occurrence of problem the intermittent and more
likely seen in a heavily loaded system with lots of changes that
lead to the long-running cleaning process after execution of the
storage command stopfcconsistgrp. This happens when at least
one Flashcopy relation and corresponding consistency group are
still in the 'stopping' state when IBM Spectrum Protect Snapshot
starts the delete and subsequent synchronous reconcile
operations.
Spectrum Protect Versions Affected:
IBM Spectrum Snapshot versions 8.1.x on all supported platforms
IBM Tivoli FlashCopy Manager versions 4.1.x on all supported
platforms
Initial Impact: Low
Additional Keywords:
TS005784564 fcm FlashCopy orphan |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All users of IBM Spectrum Protect Snapshot for UNIX with *
* SVCDTA adapter configured in the profile: v.8.1.x up to *
* v.8.1.11 *
****************************************************************
* PROBLEM DESCRIPTION: *
* See ERROR description. *
****************************************************************
* RECOMMENDATION: *
* Apply fixing level when available. This problem is currently *
* projected to be fixed in the next release. Note that this *
* information is subject to change at the discretion of IBM. *
**************************************************************** |
| Local Fix: |
Manually delete orphaned volumes and FlashCopy relationships.
Increase SVC_CLEAN_RATE parameter in the DEVICE section of the
profile file when SVCDTA is configured. |
| Solution |
|
| Workaround |
****************************************************************
* USERS AFFECTED: *
* All users of IBM Spectrum Protect Snapshot for UNIX with *
* SVCDTA adapter configured in the profile: v.8.1.x up to *
* v.8.1.11 *
****************************************************************
* PROBLEM DESCRIPTION: *
* See ERROR description. *
****************************************************************
* RECOMMENDATION: *
* Apply fixing level when available. This problem is currently *
* projected to be fixed in the next release. Note that this *
* information is subject to change at the discretion of IBM. *
**************************************************************** |
| Comment |
The SVCDTA adapter has been fixed so that Spectrum Protect
Snapshot for Unix will not leave behind orphaned FlashCopy pairs
and volumes. |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 24.08.2021
08.12.2021
08.12.2021 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
