On 15/10/2016 19:47, Ian Jackson wrote:
If some program is run within an schroot which invokes gpg (for
example, as part of a package build, or a DEP-8 test suite), schroot
can fail to tear the chroot down.  As an example, dgit's DEP-8 test
suite currently fails for this reason when run with adt-virt-schroot
specifying an lvm snapshot sid chroot.

(See #840669 for more details.)

I suggest that schroot ought to kill gpg-agents when tearing down the
chroot.  On my own computer I have done this with the attached script,
which might serve as a starting point.

I suspect that this script is not quite what is needed.  Things which
are perhaps wrong with it:
 * It always prints output (good for me to help debug this problem,
   but not good for a default shipped with schroot)
 * I am not sure whether the --exec test will DTRT.  ISTM that it
   will almost certainly do a wrong thing for tarball chroots, but
   it's probably right for lvm snapshot ones (or any other that has
   its own separately mounted /usr filesystem).
 * Other things I haven't thought of.

Thanks, I'll take a look at the script.

However, I wonder why the existing killprocs script isn't finding and killing the agent on session end. It should take care of any processes running inside the chroot whether or not they are daemons.


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