On Tue, Aug 30, 2016 at 4:58 PM, Volker Armin Hemmann <volkerar...@googlemail.com> wrote: > > the journal does not add any data integrity benefits at all. It just > makes it more likely that the fs is in a sane state if there is a crash. > Likely. Not a guarantee. Your data? No one cares. >
That depends on the mode of operation. In journal=data I believe everything gets written twice, which should make it fairly immune to most forms of corruption. f2fs would also have this benefit. Data is not overwritten in-place in a log-based filesystem; they're essentially journaled by their design (actually, they're basically what you get if you ditch the regular part of the filesystem and keep nothing but the journal). > If you want an fs that cares about your data: zfs. > I won't argue that the COW filesystems have better data security features. It will be nice when they're stable in the main kernel. -- Rich
