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Date: Sat, 15 Aug 2015 08:28:41 +0800
From: Anand Jain <anand.jain@oracle.com>
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To: Timothy Normand Miller <theosib@gmail.com>
CC: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: Can't mount degraded. How to remove/add drives OFFLINE?
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> Just to be clear, I removed the drive (the original failed drive) when
> the power was off, then powered up, and then mounted degraded.  That's
> not dangerous that I know of.

patch has details. pls refer.
>
> Where is this patch, and what kernel versions can this be applied to?


https://patchwork.kernel.org/patch/7014141/

its on 4.3. but should apply nice on below.

thanks
Anand