Date: Tue, 26 Jan 2010 12:58:57 +0100 (CET) From: Oliver Fromme <olli@lurza.secnetix.de> To: freebsd-current@FreeBSD.ORG, jroberson@jroberson.net Subject: Re: SUJ testing update Message-ID: <201001261158.o0QBwv2B076431@lurza.secnetix.de> In-Reply-To: <x47961x1264462520x@lurza.secnetix.de>
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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. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart 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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