SU+J Lost files after a power failure
demelier.david at gmail.com
Mon Oct 14 20:46:18 UTC 2013
On 14.10.2013 20:43, Adam Vande More wrote:
> On Mon, Oct 14, 2013 at 1:33 PM, CeDeROM <cederom at tlen.pl
> <mailto:cederom at tlen.pl>> wrote:
> Thank you for explaining :-) So it looks that it would be sensible to
> force filesystem check every n-th mount..?
> Please explain the logic in which this helps anything.
> Or to do a filesystem check
> after crash..?
> Already standard behavior as implicitly seen in this thread.
> Are there any flags like that to mark filesystem
> unclean and to force fsck after n-th mount?
> No and any fs that requires such a system is broken by design.
> That would assume
> disabling journal and soft updates journaling I guess..?
> What would be the best option for best data integrity in case of
> mount -o sync or use ZFS. Both require hardware that correctly report
> success to fsync.
I personnally love ZFS and use it massively on my server, but for a
desktop I think this is a real overkill. Also I don't have so much RAM
to waste for that. I think UFS is enough, however as a modern operating
system I don't expect any data corruption by default using SU+J.
The filesystem domain is not a thing I really know deeply, so thanks for
all you explanation.
PS: the power failure is not the only way that does not shutdown cleanly
the system. There are kernel panics, crash and such of course. Those
which appears sometimes too.
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