[Lustre-discuss] How to eliminate an OST from an OSS server

Brian J. Murrell Brian.Murrell at oracle.com
Wed May 26 04:58:40 PDT 2010

On Wed, 2010-05-26 at 09:43 +0300, Mohamed Adel wrote: 
> Dear,
> I have a pre-installed lustre file-system with two MDSs and two OSSs. Each OSS has 6 arrays of disks. In OSS01, one of the arrays is not working properly due to a physical error in one of the disks of the array. I wanted to eliminate this array from OSS01. Simply I restarted MDSs and the OSSs and didn't mount that array. Then I mounted the file-system on the clients. The clients didn't produce any error after mounting but the file-system is not accessible; i.e. I can't even issue an "ls" command to view the contents of the file-system. I need to eliminate that corrupted array to be able to use the file-system but don't know how.

You likely want to deactivate the OST on the MDT and possibly on the
clients also, depending on your goals.

> Could anyone help me with that or just guide me what should I read to learn how to fix this issue.

Have you checked the operations manual at

Maybe you did but you just didn't realize "deactivate" was the operation
you were looking to perform.


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