What do these mean?
NOTICE: FlushRelationBuffers(message, 2): block 2 is referenced
(private 0,
global 1)
FATAL 1: VACUUM (vc_repair_frag): FlushRelationBuffers returned -2
pqReadData() -- backend closed the channel unexpectedly.
This probably means the backend terminated abnormally
before or while processing the request.
connection to server was lost
vacuumdb: vacuum failed
NOTICE: FlushRelationBuffers(message, 2): block 2 is referenced
(private 0,
global 1)
FATAL 1: VACUUM (vc_vacheap): FlushRelationBuffers returned -2
pqReadData() -- backend closed the channel unexpectedly.
This probably means the backend terminated abnormally
before or while processing the request.
connection to server was lost
vacuumdb: vacuum failed