Date: Sun, 9 May 2010 07:54:59 -0400 From: Ansar Mohammed <ansarm@gmail.com> To: Bruce Cran <bruce@cran.org.uk> Cc: Bobby Walker <bobbyjwalker@live.com>, freebsd-questions@freebsd.org Subject: Re: File system Message-ID: <r2j768631271005090454z31cb6a3dm694922674bbb27b@mail.gmail.com> In-Reply-To: <201005091046.08871.bruce@cran.org.uk> References: <u2z768631271005081836k26590481qcaab03601799448d@mail.gmail.com> <BLU0-SMTP88023B888DBB974F2A7FE6BBF80@phx.gbl> <m2k768631271005082018r83839cc5wdc5531906234afa3@mail.gmail.com> <201005091046.08871.bruce@cran.org.uk>
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Thank you Bruce and Matthew, for your very informed and insightful comments. I read online that this may be fixed in FreeBSD 9 with jeff's UFS Journaling patch. Have you guys tried this yet? http://jeffr-tech.livejournal.com/ On Sun, May 9, 2010 at 5:46 AM, Bruce Cran <bruce@cran.org.uk> wrote: > On Sunday 09 May 2010 04:18:12 Ansar Mohammed wrote: > > > The background to this problem is because the FreeBSD root filesystem > (UFS) > > is not journaled and for some reason I cannot set my root partition to be > > UFS+SoftUpdates. > > > > At any rate, we are in the year 2010, most modern operating systems and > > databases and able to survive an unclean shutdown without booting into > > single user mode and file system/data corruption. > > Even with SoftUpdates and journaling you'll find UFS doesn't cope well with > unclean shutdowns: to test it, a couple of weeks ago I started a "rm -rf > /usr/obj/*" and pressed the reset button - upon startup I got dumped into > single-user mode with a softupdates inconsistency. I've not tried the same > test but I think ZFS is much better at recovering from this sort of problem > since it was designed from the start to be very resilient. > > -- > Bruce Cran >
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