Re: move data within CIFS

Hi again,

of course robocopy is exactly the wrong tool.

Using robocopy on any server will grant that all the data is transferred via LAN.

And it has a lot of options like purge and mir, but it can never move data within a partition without really transferring them.

A move within the same drive letter on a windows server will take less than a second because only the MFT is changed and no block of real data transfered.

Kind regards

Knut

From: Michail Michalakis [mailto:hockey@spidernet.net]
Sent: Friday, February 29, 2008 3:25 PM
To: Knut Kristan Weber
Subject: Re: move data within CIFS

have you tried a tool from microsoft robocopy?

----- Original Message -----

From: Knut Kristan Weber

To: 'Bernardoff, Michael'

Cc: toasters@mathworks.com

Sent: Friday, February 29, 2008 1:42 PM

Subject: RE: move data within CIFS

Hi thanks, Michael,

the syntax is:

usage: mv file1 file2

So we would have do do something like „for each file in directory ...“ and „for each subdirectory in directory“ ...

If we would run this from an external server we would have to use plink.

But the server would have to read the structure to know what to tell plink. With tens or hundreds of thousand small files this would take presumably more time than to copy them directly.

With kind regards.

Knut

From: Bernardoff, Michael [mailto:bmichael@netapp.com]
Sent: Friday, February 29, 2008 11:58 AM
To: k.weber@science-computing.de
Subject: Re: move data within CIFS

You should probably try the "mv" command from the netapp contoler (on a test dir first). Maybe you'll have to change the privilege mode to advanced or diag.

I you've any doubt during the real m€ove take a snapshot before proceeding to be able to quicky restore in case of problem

_________________
Michael Bernardoff
FSE@netapp
+33 679 028 224

-----Original Message-----
From: Knut Kristan Weber <k.weber@science-computing.de>
To: toasters@mathworks.com <toasters@mathworks.com>
CC: winserver-team@science-computing.de <winserver-team@science-computing.de>
Sent: Fri Feb 29 09:20:22 2008
Subject: move data within CIFS

Hello *,

we have a NetApp working as a CIFS-Filer.
A collegue wants to move about 6 TB of data in the directory scruture one
level up within the same volume.

Using the filer with a LUN as a block device would work like this.
A normal windows Server also can move data in between the same drive letter
without copying it - just in a scond.

But the NetApp has no solution I know so far to make a move when it works
itwself as a CIFS filer.
And even worse it does not only cost disk space because it copies and
deletes afterwards, but also all the 6 TB data move over the LAN.

Is there something like a move in advanced mode or any undocumented ways?
Or to use NDMP copy in such a way?

thanks a lot in advance

------------------------------------------------------------

with kind regards
______________________________________creating IT solutions

Dipl.-Chem. Knut Kristan Weber

Senior Solutions Engineer
CAx Professional Services

science + computing ag       Hagellocher Weg 73
phone +49 7071 94 57 473     72070 Tübingen, Germany
fax   +49 7071 94 57 411     http://www.science-computing.de

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-- 
Vorstand/Board of Management:
Dr. Bernd Finkbeiner, Dr. Florian Geyer,
Dr. Roland Niemeier, Dr. Arno Steitz, Dr. Ingrid Zech
Vorsitzender des Aufsichtsrats/
Chairman of the Supervisory Board:
Prof. Dr. Hanns Ruder
Sitz/Registered Office: Tuebingen
Registergericht/Registration Court: Stuttgart
Registernummer/Commercial Register No.: HRB 382196 
 