[bug #17223] REQUEST: New download prefilled with 0's

Update of bug #17223 (project mldonkey):

                Category:          eDonkey-Plugin => Core                   
              Item Group:                    None => Feature request        
                  Status:                    None => Ready For Test         

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Follow-up Comment #1:

This is a known problem, a patch for this is already in CVS
for testing and will be included in MLDonkey 2.8.0, _after_
2.7.7 has been stable on Gentoo for some time.

Patch description:
2006/07/15
5203: Swarmer: Anti-fragmentation (pango, antifrag_v7)
* Each file is divided into blocks saved in new option
* file_disk_allocation_bitmap in swarmer section of files.ini
* Blocksize is computed like this: file_size / 200, rounded up to full
  megabytes, if bigger than 10MB: 10 MB are used as maximum blocksize.
  Preallocated blocks are marked file_disk_allocation_bitmap option.
* Blocks already fully preallocated on disk are prefered for downloading.
  That way one can get antifragmentation benefits without preallocating
  too much space, specially for downloads with small chunks.
* If the block about to be filled with data for the first time its
read/written
  back to disk to allocate the space.
  Set verbosity to "verb" to enable logging of preallocation.

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