From mboxrd@z Thu Jan  1 00:00:00 1970
From: Phil Turmel <philip@turmel.org>
Subject: Re: hung grow
Date: Tue, 10 Oct 2017 16:18:18 -0400
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To: Curt <lightspd@gmail.com>
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On 10/10/2017 03:51 PM, Curt wrote:
>> I tried a mount, it just sits there.  No errors, which I'm not sure if
>> that's good or bad, so it's almost like it's just waiting for the
>> device to not be busy.  I noticed it was lists both a reshape and
>> spare rebuild.  Could it be it's trying to rebuild the spare and
>> getting in some kind of dead lock?
> 
> Follow up, here's the top process, does this look right to you?
> 9771 root      20   0       0      0      0 R 100.0  0.0  38:27.01 md127_raid6

No, that's not good. And blocking the mount process is a disaster.

Please take notes on all device serials vs. MD device # and consider
trying everything with rescue distro.  I generally use SystemRescueCD,
but anything with the latest stable kernel and mdadm might help.

Phil