Bug#177591: anna: hangs when an IO/md5sum error occurs

[Petter Reinholdtsen <pere@hungry.com>]

Package: anna
Version: 0.019

I got the following error when I tried to install from CD.  This
happened after I choosed which extra udeb to install.  I choose the
SCSI modules udeb.

  Choose which modules to install.
  [...]
  Prompt: 1 - 20, 1 to end> q
  attempt to access beyond end of device
  16:00: rw=0, want=496322, limit=496006
  attempt to access beyond end of device
  16:00: rw=0, want=496322, limit=496006
  md5sum:
    /var/cache/anna/scsi-modules-2.4.20-386-udeb_2.4.20-2_i386.udeb:
    Input/output error

Checking the prosess list in tty2, I see the following at the end of
the list:

   43      root 924 S /usr/bin/debconf/frontend /usr/bin/main-m
   44      root 808 S /usr/bin/main-menu
  107      root 784 S sh -c /urs/bin/udpkg --configure anna
  108      root 724 S /usr/bin/udpkg --configure anna
  109      root 784 S sh -c /var/lib/dpkg/info/anna.postinst conf
  110      root 784 S /bin/sh -e /var/lib/dpkg/info/anna.postinst
  111      root 844 S anna
  387 tty2 root 840 R ps

I guess anna is waiting for something.  I do not know what it is
waiting for.

If I do not choose the SCSI modules udeb, the install fails on another
udeb (nic-modules-shared-2.4.20-386-udeb_2.4.20-2_i386.udeb).  I'll
investigate why the installation fail in my VMWare session, but my
point in this bug report is that anna should detect the failed
retriever, and return to the menu or do something else.