>>>>> On Thu, 28 Apr 2005 10:36:31 +1000, Leni Mayo <[EMAIL PROTECTED]> said:

  Leni> I'd like to image a windows desktop by booting into knoppix and using 
  Leni> bacula to backup the ntfs partitions.  I thought this'd be a nice way 
  Leni> to do disaster recovery.

  Leni> The trouble is that the desktop has a big hard disk, most of which is 
  Leni> empty.

  Leni> Neither the sparse nor compression options seem to much reduce the 
  Leni> data size written by the storage daemon.  It's clear that the whole 
  Leni> partition is being backed up, not just the data.

  Leni> I guess that the sparse=yes option doesn't have any effect because the 
  Leni> block size of 32k isn't granular enough to find the empty disk space 
  Leni> on NTFS.

  Leni> The compression=GZIP doesn't seem to help either, though as an 
  Leni> experiment I gzipped the resulting volume and it did shrink by 1/3.

  Leni> If anyone can think of a workaround I'd be interested to hear.

Maybe the free space on your disk contains old data, so that can't be
compressed too well (not sure why gzip would do better though)?  There might
be some disk scrubbing tools that would fix this.

__Martin


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