the longContentId mismatch errors show the "Expected" value is empty '' but each does has a populated 'Actual' value. Are the any of the following attached to these vmdks:
- snapshots created manually in vc
- snapshots created via the VADP backup API i.e have you got any backup products running against these VM's and VMDK's at the same time that the error occurs?
When I'm back in the vmware office I can check further into the error but for now logging the SR is the right thing to do as we'll need to see the log bundles.