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Re: Proposal to enable WAPBL by default for 10.0
On Thu, Jul 23, 2020 at 07:45:08AM +0200, Micha? G?rny wrote:
> > > Rationale: the default filesystem (FFS) without WAPBL is more prone to
> > > data loss.
> > It is not, unfortunately. We had WAPBL on by default some time back
> > and eventually switched it off.
> > The problem is that because it still doesn't do anything about
> > journaling or preserving file contents, but runs a lot faster, it
> > loses more data when interrupted.
> How does that compare to the level of damage non-journaled FFS takes?
To be explicit:
It is the same underly problem either way, and it is worse in practice
with WAPBL than without because WAPBL ffs runs faster than non-WAPBL
ffs and thus accumulates more unwritten blocks.
David A. Holland
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