Re: Postgresql Performance on an HP DL385 and - Mailing list pgsql-performance

mark@mark.mielke.cc writes:
> WAL file is never appended - only re-written?

> If so, then I'm wrong, and ext2 is fine. The requirement is that no
> file system structures change as a result of any writes that
> PostgreSQL does. If no file system structures change, then I take
> everything back as uninformed.

That risk certainly exists in the general data directory, but AFAIK
it's not a problem for pg_xlog.

            regards, tom lane