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Date:      Mon, 30 Jun 2008 15:12:59 -0400
From:      Jim <stapleton.41@gmail.com>
To:        "Roland Smith" <rsmith@xs4all.nl>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: filesystem information
Message-ID:  <80f4f2b20806301212n1bf6137bq75f40464212c2304@mail.gmail.com>
In-Reply-To: <20080630170400.GB65282@slackbox.xs4all.nl>
References:  <80f4f2b20806300401x71483882x8e9a6cf919f1ff9@mail.gmail.com> <20080630073059.be11304d.wmoran@potentialtech.com> <80f4f2b20806300930p67ca1fd5xf9ad59d16889df36@mail.gmail.com> <20080630170400.GB65282@slackbox.xs4all.nl>

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> In case of frequent power outages, I guess the right answer is "get a
> UPS". :)

Aye, I just got one. But for the longest time, it was a bit out of my
price range due to other priorities. Actually, the whole model line
was defective, so they are sending me a new one, and I have to wait
for it to arrive.

> Without a UPS nothing can protect you against power outages. Even when
> running the filesystem with the sync flag and setting ATA devices to
> write-through the cache cannot guarantee you won't lose data. If the
> power fails when a write is in progress, you're screwed.

I'm aware of nothing but a UPS can completely protect me from an
outage. I was just wondering why that ONE file system was misbehaving,
and the rest are prefectly fine - which seemed odd. Additionally, why
were files that are read, but not written, being lost? I can
understand losing files that are being written, but if there's a file
that has bene written several restarts ago, not written to thereafter,
and has been fine ever since, why is it being lost now?



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