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From: Wols Lists <antlists@youngman.org.uk>
To: David Madore <david+ml@madore.org>
Cc: Linux RAID mailing-list <linux-raid@vger.kernel.org>
Subject: Re: RAID5->RAID6 reshape remains stuck at 0% (does nothing, not even start)
Date: Wed, 30 Sep 2020 20:03:32 +0100	[thread overview]
Message-ID: <5F74D684.8020005@youngman.org.uk> (raw)
In-Reply-To: <20200930185824.q6dphu2axpfcjjly@achernar.gro-tsen.net>

On 30/09/20 19:58, David Madore wrote:
> On Wed, Sep 30, 2020 at 03:09:05PM +0100, antlists wrote:
>> > So my guess was spot on :-)
>> > 
>> > You'll guess that this is a common problem, with a well-known solution...
>> > 
>> > https://raid.wiki.kernel.org/index.php/Easy_Fixes#Debian_9_and_Ubuntu
> OK, I've just retried with a new version of mdadm,
> 
> mdadm - v4.1 - 2018-10-01
> 
> - which I think is roughly contemporaneous to the kernel version I'm
> using.  But the problem still persists (with the exact same symptoms
> and details).

Except that mdadm is NOT the problem. The problem is that the kernel and
mdadm are not matched date-wise, and because the kernel is a
franken-kernel you need to use a different kernel.

Use a rescue disk!!! That way, you get a kernel and an mdadm that are
the same approximate date. As it stands, your frankenkernel is too new
for mdadm 3.4, but too ancient for a modern kernel.

Cheers,
Wol

  reply	other threads:[~2020-09-30 19:03 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-30  1:40 RAID5->RAID6 reshape remains stuck at 0% (does nothing, not even start) David Madore
2020-09-30  4:03 ` Wols Lists
2020-09-30  9:00   ` David Madore
2020-09-30 14:09     ` antlists
2020-09-30 18:58       ` David Madore
2020-09-30 19:03         ` Wols Lists [this message]
2020-09-30 19:45           ` David Madore
2020-09-30 20:16             ` antlists
2020-09-30 22:26               ` David Madore
2020-10-01 14:10                 ` Wols Lists
2020-10-01 15:04                   ` David Madore
2020-10-01 18:21                     ` Phil Turmel
2020-10-02 10:52                 ` Nix

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