From: Matthew Wilcox <matthew@wil.cx>
To: Ric Wheeler <ric@emc.com>
Cc: Eric Sandeen <sandeen@redhat.com>,
Andi Kleen <andi@firstfloor.org>, Theodore Tso <tytso@mit.edu>,
Alexey Zaytsev <alexey.zaytsev@gmail.com>,
linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Rik van Riel <riel@surriel.com>
Subject: Re: Mentor for a GSoC application wanted (Online ext2/3 filesystem checker)
Date: Mon, 21 Apr 2008 12:58:50 -0600 [thread overview]
Message-ID: <20080421185849.GD20637@parisc-linux.org> (raw)
In-Reply-To: <480CE09D.4020402@emc.com>
On Mon, Apr 21, 2008 at 02:44:45PM -0400, Ric Wheeler wrote:
> Turning the drive write cache off is the default case for most RAID
> products (including our mid and high end arrays).
>
> I have not seen an issue with drives wearing out with either setting (cache
> disabled or enabled with barriers).
>
> The theory does make some sense, but does not map into my experience ;-)
To be fair though, the gigabytes of NVRAM on the array perform the job
that the drive's cache would do on a lower-end system.
--
Intel are signing my paycheques ... these opinions are still mine
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
next prev parent reply other threads:[~2008-04-21 18:58 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <f19298770804180720w2e72b821j95b709c1dd1b1c25@mail.gmail.com>
[not found] ` <20080419012952.GE25797@mit.edu>
2008-04-19 9:44 ` Mentor for a GSoC application wanted (Online ext2/3 filesystem checker) Alexey Zaytsev
2008-04-19 18:56 ` Theodore Tso
2008-04-19 19:07 ` Eric Sandeen
2008-04-19 22:04 ` Theodore Tso
2008-04-20 1:24 ` Eric Sandeen
2008-04-20 23:30 ` Andi Kleen
2008-04-20 23:42 ` Jamie Lokier
2008-04-21 8:01 ` Andi Kleen
[not found] ` <20080421080111.GD14446@one.firstfloor.org>
2008-04-21 11:51 ` Jamie Lokier
2008-04-21 17:29 ` Ricardo M. Correia
2008-04-21 17:40 ` Andi Kleen
2008-04-21 18:27 ` Ricardo M. Correia
2008-04-22 14:48 ` Jamie Lokier
2008-04-21 18:15 ` Ric Wheeler
2008-04-21 18:25 ` Eric Sandeen
2008-04-21 18:44 ` Ric Wheeler
2008-04-21 18:58 ` Matthew Wilcox [this message]
2008-04-21 19:11 ` Ric Wheeler
2008-04-21 0:27 ` Alexey Zaytsev
2008-04-21 9:45 ` Andi Kleen
2008-04-22 16:54 ` Peter Teoh
2008-04-22 17:02 ` Eric Sandeen
2008-04-22 23:37 ` Andreas Dilger
2008-04-23 0:52 ` Eric Sandeen
[not found] ` <480E4950.1090300@oracle.com>
[not found] ` <804dabb00804221633g1f61029dh7b27737134fc0b7a@mail.gmail.com>
[not found] ` <480E7954.9090408@oracle.com>
2008-04-23 1:02 ` Peter Teoh
2008-04-20 23:37 ` Andi Kleen
2008-04-21 2:33 ` Theodore Tso
2008-04-21 14:43 ` Andi Kleen
2008-04-21 0:23 ` Alexey Zaytsev
2008-04-21 12:53 ` Theodore Tso
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