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Subject: Re: Unexpected raid1 behaviour
To: Chris Murphy <lists@colorremedies.com>,
        Peter Grandi <pg@btrfs.list.sabi.co.uk>
Cc: Linux fs Btrfs <linux-btrfs@vger.kernel.org>
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From: Anand Jain <anand.jain@oracle.com>
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Date: Mon, 18 Dec 2017 16:49:58 +0800
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> formerly missing device - a very big penalty because the whole array
> has to be done to catch it up for what might be only a few minutes of
> missing time.
  For raid1 [1] cli will pick only new chunks.
   [1]
   btrfs bal start -dprofiles=single -mprofiles=single <mnt>

Thanks, Anand