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Date: Thu, 12 Feb 2009 19:29:20 -0500
From: Bill Moran <wmoran@potentialtech.com>
To: David Newman <dnewman@networktest.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: recovering from a power outage
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David Newman <dnewman@networktest.com> wrote:
>
> What's the canonical method for checking ufs file systems on a FreeBSD
> 7.1/amd64 system after an unscheduled power outage?

Wait.

The system will automatically detect a dirty shutdown and check the disks
during the boot process.  If the disks are only mildly scrambled by the
outage, the system will continue to boot and the filesystem check program
will run in the background -- you'll notice some disk slowness until
fsck is done cleaning things up, but things will be otherwise fine.

See the man page for fsck and fsck_ffs for more details.

-- 
Bill Moran
http://www.potentialtech.com