From: Bill Davidsen <davidsen@tmr.com>
To: George Spelvin <linux@horizon.com>
Cc: Simetrical+list@gmail.com, linux-raid@vger.kernel.org
Subject: Re: 3-way mirrors
Date: Wed, 08 Sep 2010 18:28:19 -0400 [thread overview]
Message-ID: <4C880E03.3080109@tmr.com> (raw)
In-Reply-To: <20100907190255.15094.qmail@science.horizon.com>
George Spelvin wrote:
>> This might be useful reading:
>>
>> http://neil.brown.name/blog/20100211050355
>>
>
> An interesting point of view, BUT...
>
> If I am seeing repeated unexplained mismatches (despite being on a good
> UPS and having no unclean shutdowns), then some part of my hardware is
> failing, and I'd like to know *what part*.
>
How about your disk enclosure? I would think that if vibration caused a
silent bit flip *on write* you would get a read error (CRC) reading it
back. but... I am going on the theory that any factor which causes
measurable errors on read is not doing anything good for writes either.
See: http://www.zdnet.com/blog/storage/bad-bad-bad-vibrations/896
--
Bill Davidsen <davidsen@tmr.com>
"We can't solve today's problems by using the same thinking we
used in creating them." - Einstein
next prev parent reply other threads:[~2010-09-08 22:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-07 14:19 3-way mirrors George Spelvin
2010-09-07 16:07 ` Iordan Iordanov
2010-09-07 18:49 ` George Spelvin
2010-09-07 19:55 ` Keld Jørn Simonsen
2010-09-07 18:31 ` Aryeh Gregor
2010-09-07 19:02 ` George Spelvin
2010-09-08 22:28 ` Bill Davidsen [this message]
2010-09-07 22:01 ` Neil Brown
2010-09-08 1:33 ` Neil Brown
2010-09-08 14:52 ` George Spelvin
2010-09-08 23:04 ` Neil Brown
2010-09-08 9:40 ` RAID mismatches (and reporting thereof) Tim Small
2010-09-08 12:35 ` George Spelvin
2010-09-28 16:42 ` 3-way mirrors Tim Small
-- strict thread matches above, loose matches on Subject: below --
2010-09-08 3:58 Michael Sallaway
2010-09-08 4:16 ` Neil Brown
2010-09-08 5:45 Michael Sallaway
2010-09-08 6:02 ` Neil Brown
2010-09-08 6:16 Michael Sallaway
2010-09-08 6:40 ` Neil Brown
2010-09-08 9:06 ` Tim Small
2010-09-08 7:01 Michael Sallaway
2010-09-08 9:11 ` Tim Small
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