Re: Online resize

[Robin Hill <robin@xxxxxxxxxxxxxxx>]

On Wed Mar 12, 2008 at 11:04:56AM +0300, Michael Tokarev wrote:

> Robin Hill wrote:
>> What version metadata are you using?  I'm not sure how 1.0 will handle
>> partition resizes but any other should certainly be okay.  Have you
>> tried running mdadm -E on each of the component partitions?  I assume
>> the new partitions are starting from the same position as the old ones?
>
> Robin, you're completely wrong here.
>
> Only metadata at the START of the partition will work here.  Which is
> either 1.1 or 1.2, but NOT 1.0 or 0.90, - which is at the END of the
> partition.  When the end of the partition goes away, the superblock
> becomes "orphan" somewhere inside the partition, and can't be found
> anymore.
>
That's why I said I wasn't sure about 1.0 metadata.  I've grown 0.90
arrays in exactly this way (though I may not actually have rebooted) so
I assumed they'd work okay (and the manual doesn't specify where the
metadata is for these).

Cheers,
        Robin
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    ( ' }     |       Robin Hill        <robin@xxxxxxxxxxxxxxx> |
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