Subject: tar truncates file >4GB to zero size when having large sparse region
Package: tar
Version: 1.14-2
Severity: grave
Justification: renders package unusable

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When a tar archive contains a large sparse file (8 GByte file containing
6 GByte of holes) tar creates the archive without complaining but on
restore it seems to truncate the sparse file to zero size after having
spent a lot of time restoring it. So you can see it growing (slowly) and
than suddenly it implodes.

The ugliness here: such files are created by emulators like qemu. Users
may loose important data. Very dangerous, as you get no warning message
when creating a backup of such sparse files with tar.

-- System Information:
Debian Release: 3.1
Architecture: i386 (i686)
Kernel: Linux 2.6.14-6-sis
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)

Versions of packages tar depends on:
ii  libc6                       2.3.2.ds1-22 GNU C Library: Shared libraries an

-- no debconf information


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