Re: will mdadm work with a raid created using raidtools

[Andrew Nelson <freeandy@gmail.com>]

Andrew Nelson wrote:
> Frank Blendinger wrote:
> 
>>On Thu, Feb 16, 2006 at 11:31:06AM -0600, Andrew Nelson wrote:
>>
>>
>>>>It's probably not your fault - blame /dev/hde! This sounds like a bad
>>>>error on the disk - you should really get a new one, and try to copy
>>>>/dev/hde to the new disk (with dd_rescue for example). This _might_ save
>>>>the data.
>>>>
>>>>Then you can try to create the array with the new disk and hope that
>>>>it will work.
>>>
>>>
>>>I thought the whole idea of a raid 1 was that if one drive went bad I could just
>>>plug a new drive in and the raid would rebuild without problems.
>>
>>
>>That is certainly right. I just wanted to tell you, that your /dev/hde
>>probably has a serious hardware error, and that you should replace it!
>>
>>Of course you can just throw it out, put in a new drive, rebuild the
>>array with your other drive and the new one, and then resync. This
>>should work just fine.
>>
>>I guess my first answer was quite confusing, sorry. It's absolutely not
>>necessary to copy the old hde with dd_rescue.
>>
>>
>>Greetings,
>>Frank
> 
> 
> Is it possible to assemble the array with just /dev/hdg?  I swear I saw an
> option somewhere that allowed just such a thing but now I can't find it anywhere.
> 
> //andy
> 

Never mind I figured it out.

mdadm -AR /dev/md0 /dev/hdg1

So far this seems to work.

Thanks for all the help.  I'll replace hde ASAP :).


//andy