Package: tar
Version: 1.15.1dfsg-3
Severity: critical
Justification: causes serious data loss


About a month ago, I tar-ed a 6GB sparse file (ntfsclone image) with "cjSf" 
options
to get a nice 1.6GB tar.bz2 file.
I've no exact information which tar version I used for that, but it was 
certainly
from "testing". Please give hints if this can be determined somehow.

Yesterday, that NTFS volume failed and I needed to restore the ntfsclone image
from that archive.
When extracting it with "-xvjf", it resulted in a only 1.9GB file.
Interesting to note is, that the file size continously increased up to 
4333572096 bytes,
stayed there for some time (while extraction continued) and then finally 
dropped down
to 1997337088 bytes.
This was on a ext3fs (but tried with others, too), so I assume this to be a
nasty tar bug.

Currently, I desperatly trying to recover somehow from this image, so any hint
how to extract the entire 6GB file from it, is urgently needed.

Regards,
JD 

-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16-1-k7
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages tar depends on:
ii  libc6                         2.3.6-13   GNU C Library: Shared libraries

tar recommends no packages.

-- no debconf information


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