APAR status
Closed as program error.
Error description
IBM Spectrum Protect for Virtual Environments Data Protection for VMware version 8.1.11 changes the way we process or examine changed block data for VM disks, this includes powered off VMs that have no changed blocks This results in all VM's showing the transport method used for the backup where as previously powered off VM's reported NONE. This release supports the ability of vSphere 6.7 and above to back up only allocated blocks which requires opening and processing metadata for all VM disks during the backup unlike previous versions. The following example shows a comparison between version 8.1.11 and older versions : <Time_Stamp> Processing snapshot disk: [DataStore] VM_NAME/VM_DISK.vmdk (Hard Disk 1) Capacity: 53,687,091,200 Data to Send: 0 Transport: (hotadd)[sending) The daily backups also now send 7 MBs : <Time_Stamp> Total number of bytes transferred: 7.39 MB In previous versions prior to 8.1.11 : <Time_Stamp> Processing snapshot disk: [DataStore] VM_NAME/VM_DISK.vmdk (Hard Disk 1) Capacity: 53,687,091,200 Data to Send: 0 Transport: none[sending] The daily backups used to send 30+ KB for this VM in the summary : <Time_Stamp> Total number of bytes transferred: 33.26 KB If there are no changed blocks for a disk the expected behavior would be that the disks should not be opened during the backup, in the summary there should be no data sent when a disk is not changed and the transport method should report NONE. This new feature is documented in the Data Protection for VMware version 8.1.11 Updates link below : https://www.ibm.com/support/knowledg ecenter/en/SSERB6_8.1.11/ve.user/r_techchg_ve.html
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * Data Protection for VMware version 8.1.11 running on all * * Microsoft Windows x64 and Linux x86 platforms. * **************************************************************** * PROBLEM DESCRIPTION: * * See ERROR DESCRIPTION * **************************************************************** * RECOMMENDATION: * * This issue is projected to be fixed in the Data Protection * * for VMware Data Mover version 8.1.12 on Windows x64 and * * Linux x86 platforms. * * Note 1: This is subject to change at the discretion of IBM. * ****************************************************************
Problem conclusion
Disk with no data are not opened and less metadata is sent for them.
Temporary fix
Comments
APAR Information
APAR number
IT35752
Reported component name
TSM FOR VE DP V
Reported component ID
5725TVEVM
Reported release
81W
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-02-01
Closed date
2021-02-18
Last modified date
2021-02-18
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
dsmagent
Fix information
Fixed component name
TSM FOR VE DP V
Fixed component ID
5725TVEVM
Applicable component levels
[{"Line of Business":{"code":"LOB26","label":"Storage"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SS8TDQ","label":"Tivoli Storage Manager for Virtual Environments"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"81W"}]
Document Information
Modified date:
26 February 2021