tests/qemu-iotests/217

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