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Date:      Sat, 16 Jul 2005 12:16:57 +0200
From:      Nicolas Rachinsky <list@rachinsky.de>
To:        freebsd-stable@freebsd.org
Subject:   Re: dangerous situation with shutdown process
Message-ID:  <20050716101657.GA44786@pc5.i.0x5.de>
In-Reply-To: <200507152342.j6FNg5Tx015427@drjekyll.mkbuelow.net>
References:  <20050715224650.GA48516@outcold.yadt.co.uk> <200507152342.j6FNg5Tx015427@drjekyll.mkbuelow.net>

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* Matthias Buelow <mkb@incubus.de> [2005-07-16 01:42 +0200]:
> David Taylor <davidt@yadt.co.uk> writes:
> 
> >> A corrupted journal can be detected. If it's corrupted, discard
> >> the whole thing, or only the relevant entry. The filesystem will
> >> remain consistent.
> >> If track corruption occurs after the journal is written, it doesn't
> >> matter, since at boot the journal will be replayed and all operations
> >> will be performed once more.
> >
> >The track which is corrupted could contain data that wasn't written
> >to in months.  How would the journal help?
> 
> I don't understand this question.

The track destroyed could contain sectors which are in no way related
to the sectors the OS is writing to.

Nicolas



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