From: Mike Hardy <mhardy@h3c.com>
To: mingz@ele.uri.edu
Cc: PFC <lists@peufeu.com>, "Paul M." <paul@gpmidi.net>,
linux-raid@vger.kernel.org
Subject: Re: how to clone a disk
Date: Sat, 11 Mar 2006 15:08:39 -0800 [thread overview]
Message-ID: <44135877.2000207@h3c.com> (raw)
In-Reply-To: <1142114991.27020.9.camel@localhost.localdomain>
Ming Zhang wrote:
> On Sat, 2006-03-11 at 08:55 -0800, Mike Hardy wrote:
>
>>I can think of two things I'd do slightly differently...
>>
>>Do a smartctl -t long on each disk before you do anything, to verify
>>that you don't have single sector errors on other drives
>
>
> will this test interfere with normal disk io activity?
If I understand the documentation correctly, it is not supposed to
interfere with normal I/O. It's something the disk does when it can.
Also, I do it on running systems with busy disks all the time (it's
scheduled, actually, and runs automatically at the same time backups and
things like that happen), and it is never noticable to me.
*except* when it finds something, and it tells me there's a problem
before any software notices. I love the advance warning...
-Mike
next prev parent reply other threads:[~2006-03-11 23:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-11 0:56 how to clone a disk Ming Zhang
2006-03-11 11:53 ` Paul M.
2006-03-11 12:40 ` PFC
2006-03-11 16:55 ` Mike Hardy
2006-03-11 22:09 ` Ming Zhang
2006-03-11 23:08 ` Mike Hardy [this message]
2006-03-11 23:10 ` Ming Zhang
2006-03-11 22:08 ` Ming Zhang
2006-03-12 0:15 ` dean gaudet
2006-03-12 0:22 ` Ming Zhang
2006-03-12 0:31 ` dean gaudet
2006-03-12 0:36 ` Ming Zhang
2006-03-12 0:47 ` dean gaudet
2006-03-12 0:54 ` Ming Zhang
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