[Lustre-discuss] how to recreate an OST?

Brian J. Murrell Brian.Murrell at Sun.COM
Thu Feb 7 11:52:18 PST 2008


On Tue, 2008-02-05 at 21:45 +0100, Bernd Schubert wrote:
> 
> 
> 1.) mkfs.lustre ... (many parameters) /dev/device
> 2.) tunefs.lustre --index={failed_index} /dev/device
> 
> 3.) mount -t lustre /dev/device /mnt/somewhere
> 
> --> failed: Address already in use
> 
> 4.) Wrote mail and got your answer
> 
> 3.) mkfs.lustre --index --writeconf ... (many paramters) /dev/device
                         ^
You need to specify which index it should be (a numeric value).

> Now I mounted the mgs as ldiskfs, and in CONFIGS/ there is no file for the 
> missing ost. 
> But now I just found the reason - the failed OST was still activated on the 
> clients. After deleting CONFIGS/{fsname}-client and remounting as type lustre 
> again, registering the failed ost works!
> I guess one shouldn't do it this way if one still has important data on the 
> filesystem ;) 

Seems like you worked around it in any case.  :-)

> Thanks a lot for your help,

NP.  Just sorry my explanation was not more clear.

b.

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