Tom Lane wrote:
I was actually having second thoughts about the idea of using file locking. The only environment in which I've heard of file locks not being trustworthy is NFS, and if you're running a DB on NFS you've probably got worse problems than this one. Notably, if you mistakenly try to start postmasters on two different machines against the same NFS-mounted directory, the PID-based interlock will certainly fail, while file locking might save you. So maybe we should take another look at that. Has anyone heard of other contexts in which file locks don't work? Has Windows got them?
Yes. But they are mandatory rather than advisory, I believe. cheers andrew -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
