> > Agreed.. WAL cannot recover something when WAL no longer exists due to a
> > filesystem corruption.
>
> It is true that ext2 isn't good because the file system may not recover,
> but BSD UFS isn't a journalled file system, but does guarantee file
> system recovery after a crash --- it is especially good using soft
> updates.
Yes, UFS(2) is an excellent filesystem for PostgreSQL, especially if you
can use background fsck & softupdates.
