From: Pascal Hambourg <pascal@plouf.fr.eu.org>
To: linux-raid@vger.kernel.org
Subject: Re: Performance Testing MD-RAID10 with 1 failed drive
Date: Fri, 21 Oct 2022 10:15:42 +0200 [thread overview]
Message-ID: <6c31fc94-b70e-88c5-205a-efff32baf594@plouf.fr.eu.org> (raw)
In-Reply-To: <20221021001405.2uapizqtsj3wxptb@bitfolk.com>
Le 21/10/2022 à 02:14, Andy Smith a écrit :
>
> On Thu, Oct 20, 2022 at 12:13:19PM +0530, Umang Agarwalla wrote:
>> But what I am trying to understand is, how to benchmark the
>> performance hit in such a condition.
>
> Perhaps you could use dm-dust to make an unreliable block device
> from a real device?
That seems uselessly complicated to me. What about this ?
- benchmark the array in the clean state
- fail and remove a drive
- benchmark the array in the degraded state
- add a new drive and start the resync
- benchmark the array in the resync state
next prev parent reply other threads:[~2022-10-21 8:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 19:30 Performance Testing MD-RAID10 with 1 failed drive Umang Agarwalla
2022-10-19 21:00 ` Reindl Harald
2022-10-19 21:12 ` Umang Agarwalla
2022-10-19 21:25 ` Wols Lists
2022-10-19 22:56 ` Reindl Harald
2022-10-19 23:23 ` Roger Heflin
2022-10-20 6:43 ` Umang Agarwalla
2022-10-21 0:14 ` Andy Smith
2022-10-21 8:15 ` Pascal Hambourg [this message]
2022-10-21 10:51 ` Andy Smith
2022-10-21 11:51 ` Roger Heflin
2022-10-21 15:24 ` Andy Smith
2022-10-21 16:01 ` Umang Agarwalla
2022-10-21 16:53 ` Roger Heflin
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