From: Paul Clements <paul.clements@steeleye.com>
To: Michael Renner <michael.renner@geizhals.at>
Cc: linux-raid@vger.kernel.org
Subject: Re: Logging-Loop when a drive in a raid1 fails.
Date: Tue, 14 Dec 2004 10:19:32 -0500 [thread overview]
Message-ID: <41BF0484.8000903@steeleye.com> (raw)
In-Reply-To: <41BEBE29.5090500@geizhals.at>
Michael Renner wrote:
> Paul Clements wrote:
>> I don't think you should be. md in 2.6 (as of 2.6.9 or so) is as
>> stable as 2.4, at least according to our stress tests.
> Including semi-dead/dying drives? As I said, normal operation is rock
> solid, it's just the edgy, hardly used stuff which tend(s|ed) to break.
Well, we stress test with nbd under raid1. nbd has the nice property
that it gives I/O errors (read or write, depending on what's going on at
the time) when its network connection is broken. So, in our tests we
break and reconnect the nbd connection periodically, while doing heavy
I/O and, of course, the resync activity of raid1 kicks in on top of that
when the failed device is re-added to the array.
Both 2.4 and 2.6 md are rock solid under several days of this type of
testing.
--
Paul
prev parent reply other threads:[~2004-12-14 15:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-13 5:52 Logging-Loop when a drive in a raid1 fails Michael Renner
2004-12-13 15:07 ` Paul Clements
2004-12-14 10:19 ` Michael Renner
2004-12-14 15:19 ` Paul Clements [this message]
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