[Lustre-discuss] How to remove ghost files when running on an LVM snapshot of the MDT?

[Arne Wiebalck]

Arne Wiebalck wrote:
> Andreas Dilger wrote:
>> On Jul 09, 2009  15:44 +0200, Arne Wiebalck wrote:
>>> my MDS is running on an LVM snapshot of the MDT. Some files
>>> have been deleted after the snapshot was taken, so these
>>> appear as 'ghost' files now on the clients and I'm trying
>>> to get rid of them.
>> Can you please explain more about what you are doing?  Is the
>> MDS itself running on an old snapshot?
> 
> Yes. And as you raise it: how do I get back from using a snapshot
> for the MDT (to which I switched in case I had a problem with the 
> original logical volume) to a snapshot'able MDT device?
> 

Forget that question, I got confused. You don't wanna run from a 
snapshot. Rather, you want the snapshot to have a consistent copy
from which you can do a file level backup. Remains the questions
of removing the ghost files.

Cheers,
  Arne




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Dr. Arne Wiebalck                   Office 31-1-011
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