Re: SUJ testing update
- From: Oliver Fromme <olli@xxxxxxxxxxxxxxxxx>
- Date: Tue, 26 Jan 2010 12:58:57 +0100 (CET)
Jeff Roberson wrote:
I just committed some big changes to suj to svn at
svn://svn.freebsd.org/base/projects/suj/head
You can now run softdep without journaling again. The fast journal
checker is enabled. You need only use tunefs -j enable or tunefs -j
disable.
The SUJ flag in the filesystem moved for backwards compat reasons. If you
have an earlier SUJ volume please disable it with the old tunefs and
enable again with the new tunefs.
I'll be making a few more minor changes before I commit to HEAD but we're
pretty close. Please give it a go and make sure it works for you!
Just out of curiosity, is it possible to put the journal
on a different physical disk (e.g. a flash disk or other
kind of SSD)? Or does the journal have to live inside the
actual file system?
And a second, more important question: How well does SUJ
cope with unexpected power outages? I just had two power
failures recently, the first caused by a bad supply, the
second caused by a failing CPU fan which lead to an
emergency shutdown of the hardware (power-off). I also
remember the last "real" power outage at home when I tried
to use the electric kettle, the toaster and the microwave
at the same time ...
Best regards
Oliver
--
Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M.
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FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd
"The most important decision in [programming] language design
concerns what is to be left out." -- Niklaus Wirth
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