How much space should I allocate for WAL files? (was: RE: Can't get postmaster to restart after removing WAL files)

From: "Nick Fankhauser" <nickf(at)ontko(dot)com>
To: "Randy Hall" <rthall3(at)home(dot)com>, "pgsql-admin" <pgsql-admin(at)postgresql(dot)org>
Subject: How much space should I allocate for WAL files? (was: RE: Can't get postmaster to restart after removing WAL files)
Date: 2001-09-11 11:55:12
Message-ID: NEBBLAAHGLEEPCGOBHDGCEGLDKAA.nickf@ontko.com
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> Since you can recreate or restore the data, erase everything in
> your $PGDATA directory and reinitialize the database.

Thanks! I'll give that a try.

> While you are at it, you should
> consider putting $PGDATA on a filesystem with more space.

Doing that has just become a priority for me! <g> I'd like to approach this
logically instead of just taking a shot in the dark. Is there any way to
predict in advance how much space I'll need?

-Nick

> --
> Randy Hall - Red Hat Certified Engineer - Ex-Great Bridge
> PostgreSQL Expert
> Resume: http://members.home.net/rthall3
>
> ----- Original Message -----
> From: "Nick Fankhauser" <nickf(at)ontko(dot)com>
> To: "pgsql-admin" <pgsql-admin(at)postgresql(dot)org>
> Sent: Tuesday, September 11, 2001 7:16 AM
> Subject: [ADMIN] Can't get postmaster to restart after removing WAL files
>
>
> > Hi all-
> >
> > I caused a crash by filling up the filesystem that pg_xlog
> lives on whilst
> > doing a vacuum analyze. When I looked at the remains, there were 3 WAL
> files
> > out there & no space left.
> >
> > I tried simply restarting (/etc/init.d/postgresql start) in the
> hopes that
> > the mess would get cleaned, but with no luck. The startup
> script reported
> > success, but no postmaster was running.
> >
> > I tried removing the WAL files & restarting again with the same results-
> the
> > startup script reports success, but postmaster isn't running.
> >
> > I'm not worried about the data- this is on a demo system, so I can
> > regenerate it quickly, but I can't even get the postmaster started so I
> can
> > begin the restore. I guess I've learned that removing a WAL
> file is a Bad
> > Idea (tm)... but now I need a good idea to get me back to the starting
> > point.
> >
> > Any ideas?
> >
> > TIA-
> >
> > -Nick
> >
> >
> > ---------------------------------------------------------------------
> > Nick Fankhauser
> >
> > nickf(at)doxpop(dot)com Phone 1.765.965.7363 Fax 1.765.962.9788
> > doxpop - Court records at your fingertips - http://www.doxpop.com/
> >
> >
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