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Full Discussion: DD copy excluding empty blocks?
Special Forums Hardware Filesystems, Disks and Memory DD copy excluding empty blocks? Post 302265229 by Merkilo on Saturday 6th of December 2008 04:15:16 AM
Old 12-06-2008
DD copy excluding empty blocks?
I'm not 100% sure if this was the right place to post in but here i go:

I'm attempting to migrate a physical windows disk onto my SAN through the use of the dd copy command. I'm booting into knoppix, running dd, and then bringing the server back up into windows running on the SAN. Everything boots just fine, but what I realized is the dd command is copying the empty blocks on the disk. Not only is this greatly extending the time of the copy, but I'm losing my thin provisioning, which is a key benefit of having the SAN. I'd really like to make this a working solution so my question is: Is there any way to do a dd copy without copying the empty blocks on the drive?

Oh and resizing the partition before the copy is not an option
 

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LEARN ABOUT DEBIAN

cpmcp

CPMCP(1)							   User commands							  CPMCP(1)

NAME

       cpmcp - copy files from and to CP/M disks

SYNOPSIS

       cpmcp [-f format] [-p] [-t] image user:file file
       cpmcp [-f format] [-p] [-t] image user:file ... directory
       cpmcp [-f format] [-p] [-t] image file user:file
       cpmcp [-f format] [-p] [-t] image file ... user:

DESCRIPTION

       cpmcp  copies  one or more files to or from a CP/M disk.  When copying multiple files, the last argument must be a drive or directory.  The
       drive letter does not matter because the device is specified by the image, it is only used to specify which direction  you  want  to  copy.
       The user number is specified after the drive letter, if omitted user 0 is used.

       You can use * and ? in CP/M file names, which have the same meaning in sh(1) file name patterns.

OPTIONS

       -f format
	      Use the given CP/M disk format instead of the default format.

       -p     Preserve time stamps when copying files from CP/M to UNIX (not implemented for copying the other way so far).

       -t     Convert text files between CP/M and UNIX conventions.

RETURN VALUE

       Upon successful completion, exit code 0 is returned.

ERRORS

       Any errors are indicated by exit code 1.

FILES

       /etc/cpmtools/diskdefs	CP/M disk format definitions

AUTHORS

       This  program  is  copyright  1997-2010	Michael  Haardt  <michael@moria.de>.   The  Windows  port  is  copyright  2000,  2001 John Elliott
       <jce@seasip.demon.co.uk>.

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as  published	by
       the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

       This  program  is  distributed  in  the	hope  that  it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER-
       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program.  If not, write to the Free Software  Foundation,
       Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

SEE ALSO

       cpmls(1), cpm(5)

CP
/M tools							  March 30, 2010							  CPMCP(1)
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