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Date:      Wed, 02 May 2012 19:06:56 -0400
From:      Daryl Richards <daryl@isletech.net>
To:        freebsd-fs@freebsd.org
Subject:   Re: Replacing dead drives in ZRAID2
Message-ID:  <4FA1BE10.3010200@isletech.net>
In-Reply-To: <20120502223414.EC0E71065670@hub.freebsd.org>
References:  <20120502223414.EC0E71065670@hub.freebsd.org>

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On 12-05-02 6:34 PM, Simon wrote:
> Thank you Mark, that's what I thought, too. My major concern is the failure
> of drives, not so much the hot-swapping. I can live with taking the machine
> offline, replacing the drive(s), and booting up. Yanking the drives out from live
> system is the only way I can simulate a hard failure. Without this working, I
> cannot be sure the system will remain running should a drive go bad. I'm
> not sure how the system would handle this given ahd cannot handle pulling
> of hot drives out.  I will try to get in touch with the driver maintainer.
>
> Thanks again!
> -Simon

One way to simulate a "failure" with ZFS is to use dd to write trash data to the underlying drive, and then scrub it to detect the errors and have it correct itself.


-- 
Daryl Richards
Isle Technical Services Inc.




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