| #!/usr/bin/env bash | |
| # group: rw quick | |
| # | |
| # Test the handling of errors in write requests with multiple allocations | |
| # | |
| # Copyright (C) 2020 Igalia, S.L. | |
| # Author: Alberto Garcia <berto@igalia.com> | |
| # | |
| # This program is free software; you can redistribute it and/or modify | |
| # it under the terms of the GNU General Public License as published by | |
| # the Free Software Foundation; either version 2 of the License, or | |
| # (at your option) any later version. | |
| # | |
| # This program is distributed in the hope that it will be useful, | |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| # GNU General Public License for more details. | |
| # | |
| # You should have received a copy of the GNU General Public License | |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| # | |
| # creator | |
| owner=berto@igalia.com | |
| seq=`basename $0` | |
| echo "QA output created by $seq" | |
| status=1 # failure is the default! | |
| _cleanup() | |
| { | |
| _cleanup_test_img | |
| } | |
| trap "_cleanup; exit \$status" 0 1 2 3 15 | |
| # get standard environment, filters and checks | |
| . ./common.rc | |
| . ./common.filter | |
| _supported_fmt qcow2 | |
| _supported_proto file fuse | |
| _supported_os Linux | |
| _unsupported_imgopts cluster_size refcount_bits extended_l2 compat=0.10 data_file | |
| echo '### Create the image' | |
| _make_test_img -o refcount_bits=64,cluster_size=1k 1M | |
| # The reference counts of the clusters for the first 123k of this | |
| # write request are stored in the first refcount block. The last | |
| # cluster (guest offset 123k) is referenced in the second refcount | |
| # block. | |
| echo '### Fill the first refcount block and one data cluster from the second' | |
| $QEMU_IO -c 'write 0 124k' "$TEST_IMG" | _filter_qemu_io | |
| echo '### Discard two of the last data clusters, leave one in the middle' | |
| $QEMU_IO -c 'discard 121k 1k' "$TEST_IMG" | _filter_qemu_io | |
| $QEMU_IO -c 'discard 123k 1k' "$TEST_IMG" | _filter_qemu_io | |
| echo '### Corrupt the offset of the second refcount block' | |
| refcount_table_offset=$(peek_file_be "$TEST_IMG" 48 8) | |
| poke_file "$TEST_IMG" $(($refcount_table_offset+14)) "\x06" | |
| # This tries to allocate the two clusters discarded earlier (guest | |
| # offsets 121k and 123k). Their reference counts are in the first and | |
| # second refcount blocks respectively, but only the first one can be | |
| # allocated correctly because the second entry of the refcount table | |
| # is corrupted. | |
| echo '### Try to allocate the discarded clusters again' | |
| $QEMU_IO -c 'write 121k 3k' "$TEST_IMG" | _filter_qemu_io | |
| # success, all done | |
| echo "*** done" | |
| rm -f $seq.full | |
| status=0 |