How old is CentOS 7? With that kernel I guess it's quite old?
Try and get a CentOS 8.5 disk. At the end of the day, the version of
linux doesn't matter. What you need is an up-to-date rescue disk.
Distro/whatever is unimportant - what IS important is that you are using
the latest mdadm, and a kernel that matches.
The problem you have sounds like a long-standing but now-fixed bug. An
original CentOS disk might be okay (with matched kernel and mdadm), but
almost certainly has what I consider to be a "dodgy" version of mdadm.
If you can afford the downtime, after you've reverted the reshape, I'd
try starting it again with the rescue disk. It'll probably run fine. Let
it complete and then your old CentOS 7 will be fine with it.
Cheers,
Wol
On 08/05/2022 23:04, Bob Brand wrote:
Thank Wol.
Should I use a CentOS 7 disk or a CentOS disk?
Thanks
-----Original Message-----
From: Wols Lists <antlists@xxxxxxxxxxxxxxx>
Sent: Monday, 9 May 2022 1:32 AM
To: Bob Brand <brand@xxxxxxxxxxxxxxx>; linux-raid@xxxxxxxxxxxxxxx
Cc: Phil Turmel <philip@xxxxxxxxxx>
Subject: Re: Failed adadm RAID array after aborted Grown operation
On 08/05/2022 14:18, Bob Brand wrote:
If you’ve stuck with me and read all this way, thank you and I hope
you can help me.
https://raid.wiki.kernel.org/index.php/Linux_Raid
Especially
https://raid.wiki.kernel.org/index.php/Linux_Raid#When_Things_Go_Wrogn
What you need to do is revert the reshape. I know what may have happened,
and what bothers me is your kernel version, 3.10.
The first thing to try is to boot from up-to-date rescue media and see if an
mdadm --revert works from there. If it does, your Centos should then bring
everything back no problem.
(You've currently got what I call a Frankensetup, a very old kernel, a
pretty new mdadm, and a whole bunch of patches that does who knows what.
You really need a matching kernel and mdadm, and your frankenkernel won't
match anything ...)
Let us know how that goes ...
Cheers,
Wol
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