Re: SUJ testing update

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

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