tests/qemu-iotests/217

   1 #!/usr/bin/env bash
   2 #
   3 # I/O errors when working with internal qcow2 snapshots, and repairing
   4 # the result
   5 #
   6 # Copyright (C) 2018 Red Hat, Inc.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 seq=$(basename $0)
  22 echo "QA output created by $seq"
  23
  24 status=1        # failure is the default!
  25
  26 _cleanup()
  27 {
  28     _cleanup_test_img
  29     rm -f "$TEST_DIR/blkdebug.conf"
  30 }
  31 trap "_cleanup; exit \$status" 0 1 2 3 15
  32
  33 # get standard environment, filters and checks
  34 . ./common.rc
  35 . ./common.filter
  36
  37 # This test is specific to qcow2
  38 _supported_fmt qcow2
  39 _supported_proto file
  40
  41 # This test needs clusters with at least a refcount of 2 so that
  42 # OFLAG_COPIED is not set.  refcount_bits=1 is therefore unsupported.
  43 # (As are external data files.)
  44 _unsupported_imgopts 'refcount_bits=1[^0-9]' data_file
  45
  46 echo
  47 echo '=== Simulating an I/O error during snapshot deletion ==='
  48 echo
  49
  50 _make_test_img 64M
  51 $QEMU_IO -c 'write 0 64k' "$TEST_IMG" | _filter_qemu_io
  52
  53 # Create the snapshot
  54 $QEMU_IMG snapshot -c foo "$TEST_IMG"
  55
  56 # Verify the snapshot is there
  57 echo
  58 _img_info | grep 'Snapshot list'
  59 echo '(Snapshot filtered)'
  60 echo
  61
  62 # Try to delete the snapshot (with an error happening when freeing the
  63 # then leaked clusters)
  64 cat > "$TEST_DIR/blkdebug.conf" <<EOF
  65 [inject-error]
  66 event = "cluster_free"
  67 errno = "5"
  68 EOF
  69 $QEMU_IMG snapshot -d foo "blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG"
  70
  71 # Verify the snapshot is gone
  72 echo
  73 _img_info | grep 'Snapshot list'
  74
  75 # Should only show leaks
  76 echo '--- Checking test image ---'
  77 _check_test_img
  78
  79 echo
  80
  81 # As there are only leaks, this should be able to fully repair the
  82 # image
  83 echo '--- Repairing test image ---'
  84 _check_test_img -r leaks
  85
  86
  87 # success, all done
  88 echo '*** done'
  89 rm -f $seq.full
  90 status=0