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Date:      Fri, 26 Dec 2008 09:35:42 +0300
From:      Sergey Zaharchenko <doublef-ctm@yandex.ru>
To:        David Wolfskill <david@catwhisker.org>
Cc:        hackers@freebsd.org
Subject:   Re: How to quickly determine if UFS2 FS is "clean" from command line?
Message-ID:  <20081226063542.GA20518@shark.localdomain>
In-Reply-To: <20081226014956.GR4100@albert.catwhisker.org>
References:  <20081226011402.GP4100@albert.catwhisker.org> <20081226012224.2fbd579a@gluon> <20081226014956.GR4100@albert.catwhisker.org>

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Hello David!

Thu, Dec 25, 2008 at 05:49:56PM -0800 you wrote:

> Would anyone else be interested in a hack to dumpfs(8) in the form
> of a command line flag (e.g., "-s" -- as in "short" or "super block
> only") to tell it to just spit out the FS super block information
> and skip the cylinder group stuff?

Some of the stuff you want can be found here:

root@shark:~# file -s /dev/ufs/home=20
/dev/ufs/home: Unix Fast File system [v2] (little-endian) last mounted on /=
home, volume name home, last written at Fri Dec 26 06:33:07 2008, clean fla=
g 0, readonly flag 0, number of blocks 13631488, number of data blocks 1320=
2246, number of cylinder groups 145, block size 16384, fragment size 2048, =
average file size 16384, average number of files in dir 64, pending blocks =
to free 4, pending inodes to free 0, system-wide uuid 0, minimum percentage=
 of free blocks 8, TIME optimization

You probably want the clean flag (which is 0 for me because that device
node is mounted).

HTH,

--=20
DoubleF
No virus detected in this message. Ehrm, wait a minute...
/kernel: pid 56921 (antivirus), uid 32000: exited on signal 9
Oh yes, no virus:)

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