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Date:      Thu, 13 Feb 2003 02:45:06 +0200
From:      Giorgos Keramidas <keramida@ceid.upatras.gr>
To:        Heinrich Rebehn <rebehn@ant.uni-bremen.de>
Cc:        Bill Moran <wmoran@potentialtech.com>, freebsd-questions@FreeBSD.org
Subject:   Re: fsck takes very long after crash/reset
Message-ID:  <20030213004506.GA1355@gothmog.gr>
In-Reply-To: <3E4A8EF5.1070308@ant.uni-bremen.de>
References:  <3E4A5B77.5080103@ant.uni-bremen.de> <3E4A863E.2030801@potentialtech.com> <3E4A8EF5.1070308@ant.uni-bremen.de>

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On 2003-02-12 19:14, Heinrich Rebehn <rebehn@ant.uni-bremen.de> wrote:
>Bill Moran wrote:
>>Heinrich Rebehn wrote:
>>>I operate a FreeBSD server with a 300GB Raid. This morning i had to
>>>hard reset it and when booting, fsck took some 20 minutes.
>>>[...]
>>>Also, some weeks ago, we had missing files after a crash/fsck.
>>
>>Soft-updates will do that if the system crashes in the middle of
>>writes.
>
> I have read several times that soft updates ensure that the fs is
> always in a consistent state?

When a file isn't fully written on the hard disk, a "consistent state"
of the filesystem is one that doesn't include half-finished updates.

What would you prefer?  A half-finished file that possibly includes
garbage, or a consistent filesystem?


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