Re: mdadm bad blocks list

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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:
>> 
>>> 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.
>> 
>> You can do this yourself by putting
>> 
>>   CREATE bbl=no
>> 
>> 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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