Date: Wed, 20 Jul 2005 02:24:09 -0700 From: Zev Thompson <zev@interchange.ubc.ca> To: questions@freebsd.org Subject: Journaling vs. Softupdates Message-ID: <opst7gejj7pxwg44@mail.interchange.ubc.ca>
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Hi all, This is addressed in the FAQ to some extent, but that answer seems incomplete. Apparently one of the Google Summer of Code projects is to add journaling to UFS. When it already has softupdates, why? I've seen benchmarks that seem to indicate that softupdates performs as well or better in most cases, though I have nothing on hand to substantiate that. I thought the only real disadvantages of softupdates were: - harder to code and implement (though this is already done, so should not be an issue) - sometimes deleting files does not free space right away Possibility of data loss, I'm guessing, is the same with either. Filesystem corruption is similarly very unlikely. So why the change? Thanks in advance for any answers. Zev
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