Thread: BUG #16750: VACUUM sporadically fails to access pgstat on Cygwin
The following bug has been logged on the website: Bug reference: 16750 Logged by: Alexander Lakhin Email address: exclusion@gmail.com PostgreSQL version: 12.5 Operating system: Windows (Cygwin) Description: As the buildfarm shows ([1], [2], [3]), VACUUM (and CREATE INDEX) from time to time can produce the following warnings (that leads to test failures): https://buildfarm.postgresql.org/cgi-bin/show_stage_log.pl?nm=lorikeet&dt=2020-09-07%2020%3A31%3A16&stg=install-check-C https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lorikeet&dt=2019-10-27%2009%3A36%3A07 pg_regress/vacuum WARNING: could not open statistics file "/cygdrive/w/lorikeet/REL_12_STABLE/global.stat": Permission denied pg_regress/create_index WARNING: could not open statistics file "/cygdrive/w/lorikeet/REL_13_STABLE/global.stat": Device or resource busy The issue with the "Permission denied" error is already resolved for Windows (see bug #16161), but cygwin still suffers from it. [1] https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lorikeet&dt=2020-06-04%2003%3A51%3A45 [2] https://buildfarm.postgresql.org/cgi-bin/show_stage_log.pl?nm=lorikeet&dt=2020-08-17%2008%3A28%3A25&stg=install-check-C [3] https://buildfarm.postgresql.org/cgi-bin/show_stage_log.pl?nm=lorikeet&dt=2020-09-02%2008%3A28%3A53&stg=install-check-C