This bug was already addressed in the past by Marco d'Itri. Now it reappears.
See the debian change log
[...]
xfsdump (3.1.6+nmu1) unstable; urgency=medium
* Non-maintainer upload.
* Create in postinst the xfsdump and xfsrestore compatibility symlinks.
This is needed to support merged /usr systems (closes: #767926)
-- Marco d'Itri <m...@linux.it> Thu, 07 Jan 2016 22:44:28 +0100
[...]
The problem is that the original xfsdump Makefile(s) (both the one under dump/
and the one under restore/) install the binary under /sbin and create a symlink
to the binary under /usr/sbin. Of course this doesn't work when the system has
/[s]bin and /usr/[s]bin merged.
Looking at the past packages (3.1.6+nm1), the symlinking where dropped from the
Makefile, and where added in the *.{postinst,postrm} hooks.
I have to point out that the actual Makefile checks if the system is "/usr merged". However this
check is performed only at build time and not at install time. So if the build host is not "/usr
merged" and the target host is "/usr merged", the installation fails.
So In my opinion, it should be re-enable the MD's change.
BR
G.Baroncelli
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