Date: Sun, 9 May 2010 10:46:08 +0100 From: Bruce Cran <bruce@cran.org.uk> To: freebsd-questions@freebsd.org Cc: Ansar Mohammed <ansarm@gmail.com>, Bobby Walker <bobbyjwalker@live.com> Subject: Re: File system Message-ID: <201005091046.08871.bruce@cran.org.uk> In-Reply-To: <m2k768631271005082018r83839cc5wdc5531906234afa3@mail.gmail.com> References: <u2z768631271005081836k26590481qcaab03601799448d@mail.gmail.com> <BLU0-SMTP88023B888DBB974F2A7FE6BBF80@phx.gbl> <m2k768631271005082018r83839cc5wdc5531906234afa3@mail.gmail.com>
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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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