I tried this again using tar from wheezy on a new system. And yippee no
segfault and the / incremental does seem to produce a valid incremental
file.
My missing step is to be sure to regenerate the snar data from the same
version of tar. That means starting with a new fresh full backup!
This behaviour is (kind of) implied here:
http://lists.gnu.org/archive/html/bug-tar/2010-05/msg00029.html
So I think this version works when installed on squeeze:
Package: tar
Essential: yes
Status: install ok installed
Priority: required
Section: utils
Installed-Size: 2520
Maintainer: Bdale Garbee <bd...@gag.com>
Architecture: i386
Version: 1.25-3
Replaces: cpio (<< 2.4.2-39)
Pre-Depends: libc6 (>= 2.6)
Suggests: bzip2, ncompress, xz-utils
Breaks: dpkg-dev (<< 1.14.26)
Conflicts: cpio (<= 2.4.2-38)
Conffiles:
/etc/rmt 3c58b7cd13da1085eff0acc6a00f43c7
Description: GNU version of the tar archiving utility
Tar is a program for packaging a set of files as a single archive in tar
format. The function it performs is conceptually similar to cpio, and to
things like PKZIP in the DOS world. It is heavily used by the Debian
package
management system, and is useful for performing system backups and
exchanging
sets of files with others.
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