[Lustre-discuss] df -h question

Michael Kluge Michael.Kluge at tu-dresden.de
Wed Jul 11 10:34:09 PDT 2012

Dear list,

we are in the process of copying the whole content of a 1.6.7 Lustre FS 
to a 1.8.7 Lustre FS. For this I precreated all individual directories 
on the new FS to set striping information based on the #bytes/#files 
ratio. Then we used a parallel rsync to copy all directories over. All 
of this worked fine. Now, on the old FS the user data consumed 63 TB 
while on the new FS 'df -h' reports only 56 TB as used. I'm sure we 
copied all dirs and all rsyncs finished successfully.

Is this difference expected if one moves from 1.6->1.8? Or did I miss 

Regards, Michael

Dr.-Ing. Michael Kluge

Technische Universität Dresden
Center for Information Services and
High Performance Computing (ZIH)
D-01062 Dresden

Willersbau, Room WIL A 208
Phone:  (+49) 351 463-34217
Fax:    (+49) 351 463-37773
e-mail: michael.kluge at tu-dresden.de
WWW:    http://www.tu-dresden.de/zih

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