src/tests/lxc-test-snapdeps

   1 #!/bin/bash
   2
   3 # lxc: linux Container library
   4
   5 # Authors:
   6 # Serge Hallyn <serge.hallyn@ubuntu.com>
   7 #
   8 # This is a test for dependency between snapshots
   9 #
  10 # When container c2 is created as an overlayfs clone of c1, then
  11 # we record it as such, because c1 cannot be deleted until c2 is
  12 # deleted.  Once c2 is deleted, c1 should be delete-able.
  13
  14 # This library is free software; you can redistribute it and/or
  15 # modify it under the terms of the GNU Lesser General Public
  16 # License as published by the Free Software Foundation; either
  17 # version 2.1 of the License, or (at your option) any later version.
  18
  19 # This library is distributed in the hope that it will be useful,
  20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22 # Lesser General Public License for more details.
  23
  24 # You should have received a copy of the GNU Lesser General Public
  25 # License along with this library; if not, write to the Free Software
  26 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  27
  28 # This test assumes an Ubuntu host
  29
  30 set -e
  31
  32 if ! grep -q overlay /proc/filesystems; then
  33         echo "Not running this test as overlay is not available"
  34         exit 0
  35 fi
  36
  37 cleanup() {
  38         for i in `seq 1 20`; do
  39                 lxc-destroy -n snapdeptest$i > /dev/null 2>&1 || true
  40         done
  41         lxc-destroy -n snapdeptest > /dev/null 2>&1 || true
  42 }
  43
  44 verify_deps() {
  45         n=$1
  46         m=`wc -l /var/lib/lxc/snapdeptest/lxc_snapshots | awk '{ print $1 }'`
  47         [ $((n*2)) -eq $m ]
  48 }
  49
  50 cleanup
  51
  52 trap cleanup EXIT SIGHUP SIGINT SIGTERM
  53
  54 lxc-create -t busybox -n snapdeptest
  55 lxc-copy -s -n snapdeptest -N snapdeptest1
  56 fail=0
  57 lxc-destroy -n snapdeptest || fail=1
  58 if [ $fail -eq 0 ]; then
  59         echo "FAIL: clone did not prevent deletion"
  60         false
  61 fi
  62
  63 for i in `seq 2 20`; do
  64         lxc-copy -s -n snapdeptest -N snapdeptest$i
  65 done
  66
  67 verify_deps 20
  68
  69 lxc-destroy -n snapdeptest1
  70
  71 verify_deps 19
  72
  73 lxc-destroy -n snapdeptest20
  74
  75 verify_deps 18
  76
  77 for i in `seq 2 19`; do
  78         lxc-destroy -n snapdeptest$i
  79 done
  80
  81 lxc-destroy -n snapdeptest
  82
  83 echo "Snapshot clone dependency test passed"
  84 exit 0