Re: [HACKERS] Why do we need pg_vlock?

Bruce Momjian wrote:
> 
> > It seems to me there's no fundamental reason why there couldn't be
> > two VACUUMs running concurrently in a database.  With the locking
> > we are doing now, it should be safe enough.  So, I'd like to propose
> > that we get rid of the pg_vlock lock file.  It doesn't have any useful
> > purpose but it does force manual intervention by the dbadmin to recover
> > if a VACUUM crashes :-(
> >
> > Comments?  Did I miss something about why we can't have more than one
> > vacuum process?
> 
> I vote for removal.  Lock files are hacks, usually.

Agreed.

Vadim