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Re: Which file-system is good for power down?
> > But Linux's ext will CORRUPT YOUR DATA!!! (I'll give you one guess
> > how
> > I know this.) Who cares how fast it boots if your data is corrupted?
> How will ext3 corrupt my data after hard crash ?.
I have observed data corruption due to crappy penguin filesystem.
I have not spent the time to figure out exactly how it happens.
I assume the source code is available.
> AFAIK soft-dependiences keep filesystem in consistent state with
> ordering metadata writes. softdeps keep ordered metadata(which were
> not written to fs yet.) in memory. And therefore if you have hard
> crash with heavy-io server you can loose more than with journaling fs.
> Keep number of softdeps in-memory buffers small is not solution
> because it slows your io then.
Unix has had read-ahead & write-behind for decades. Any write-behind
will result in lost data if the system goes down hard. With softdeps
at least you don't lose the data that did make it out to disk.
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