From mboxrd@z Thu Jan  1 00:00:00 1970
From: NeilBrown <nfbrown@novell.com>
Subject: Re: mdadm bad blocks list
Date: Thu, 11 Feb 2016 15:15:53 +1100
Message-ID: <878u2rx4p2.fsf@notabene.neil.brown.name>
References: <56A9102D.4030304@prgmr.com> <87twly1jc7.fsf@notabene.neil.brown.name> <56B0172B.8020808@prgmr.com>
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To: Sarah Newman <srn@prgmr.com>, linux-raid@vger.kernel.org
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On Tue, Feb 02 2016, Sarah Newman wrote:

> On 01/27/2016 07:19 PM, NeilBrown wrote:
>> On Thu, Jan 28 2016, Sarah Newman wrote:
>>=20
>>> Kernel: CentOS 6 Xen4CentOS 3.18.21-17
>>> mdadm: CentOS 6 v3.3.2
>>>
>>> With the above behavior, I consider the bad blocks list to be actively =
harmful. If it's expected behavior in the current version, please consider
>>> disabling the bad blocks list by default.
>>=20
>> You can do this yourself by putting
>>=20
>>   CREATE bbl=3Dno
>>=20
>> in /etc/mdadm.conf.  That doesn't help others though.
>
> FYI, I tried adding that line and if it is present when trying to add to =
an array that currently has a bad blocks list, I get the error message
>
> md: sdi1 does not have a valid v1.0 superblock, not importing!
>
> Is this expected?

No, that looks like a bug.

If would be helpful to see complete "mdadm --examine" output of the
device that you tried to add, and a device that is already in the array.

Thanks,
NeilBrown

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