A pretty routine "make check-world" run on HEAD just blew up here, with the symptom
2017-09-10 14:27:33.318 EDT [2535] FATAL: relation mapping file "global/pg_filenode.map" contains incorrect checksum 2017-09-10 14:27:33.319 EDT [2519] LOG: autovacuum launcher process (PID 2535) exited with exit code 1 2017-09-10 14:27:33.319 EDT [2519] LOG: terminating any other active server processes This was during a REINDEX DATABASE operation in src/bin/scripts/t/200_connstr.pl, for what that's worth. Not sure what to make of this. Random bit flip? My machine does have ECC memory, though. Race condition against some updater? But the file is only 512 bytes, and we've always assumed that that size of disk read or write is atomic. (Platform is RHEL6/x86_64, kernel is Red Hat 2.6.32-696.10.1.el6.x86_64.) regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers