[Lustre-discuss] Replacing an MDT

[Nirmal Seenu]

It seems like you missed one step in the restore process. Try mounting 
the MDT partition as type "ldiskfs" and removing these files:

rm OBJECTS/* CATALOGS

You should be able to mount the MDT without any errors at this point. If 
you still see some errors do the following and try mounting it again:

tunefs.lustre --erase-params <all the options used required> --writeconf 
  <mdt-device>

Nirmal