Live migration failed with "Lack of memory (host:Minus value <= instance:XXXX)"

Solution In Progress - Updated -


Live migration failed with

ERROR (BadRequest): Migration pre-check error: Unable to migrate XXXXXX to overcloud-compute-01: Lack of memory(host:-10883 <= instance:2048) (HTTP 400) (Request-ID: req-XXXXXX-XXXXXX)

However the destination compute is not under memory pressure.

# free
              total        used        free      shared  buff/cache   available
Mem:       65402760    28484668    23400848        9980    13517244    35737280
Swap:     196083708          24   196083684


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