Veritas InfoScale™ 8.0.2 Release Notes - Linux

Unable to resize VVR data volumes when replication is in DCM mode (4112690)

This issue is observed when the VVR replication state is in the Data Change Map (DCM) mode. When you try to resize a VVR data volume, the operation fails.

The following error is displayed on the primary:

VxVM vxassist ERROR V-5-1-10127 changing volume vol:
Operation invalid as dcm is active

VxVM vxresize ERROR V-5-1-4703 Problem running vxassist command 
for volume vol, in diskgroup dg

A VVR DCM bitmap is mapped to each data volume using a region size. The DCM region size remains unchanged after it is created. If a volume is resized when the DCM is active, it may lead to a disparity between the volume and the corresponding DCM region size. The DCM replay may happen from the original region size and not the new resized data volume and that can cause a data loss.

Workaround: No workaround for the issue. To prevent data loss, resize operations are not allowed in DCM mode.

Veritas recommends that you wait until full DCM resynchronization is complete and then perform any data volume resize operations.