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Date:      Mon, 27 Apr 2009 06:37:36 -0700 (PDT)
From:      Peter Steele <psteele@maxiscale.com>
To:        Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
Cc:        #freebsd-questions <freebsd-questions@freebsd.org>
Subject:   Re: Unexpected gmirror behavior: Is this a bug?
Message-ID:  <2732371.101240839456548.JavaMail.HALO$@halo>
In-Reply-To: <18933005.81240838051541.JavaMail.HALO$@halo>

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> i think it's a bug but only happens with such massive mirror. very few 
>people do more than 2-way mirrors that's probably it wasn't catched. 
> 
>please do report the bug - it's critical. 

In fact I just confirmed that if we reduce our mirror to just two members the problem does not occur. The returning member, even if it is the first drive, is always re-synced with the data from the other drive and no data is lost. 

And yes, it's definitely a critical bug. I'm filing a bug report now, but we may have to fix this in-house before we can release our product with this problem. There is too great a risk for customers to lose data. 

Peter 




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