1b7cd2c11SMax Reitz#!/usr/bin/env bash 2b7cd2c11SMax Reitz# 3b7cd2c11SMax Reitz# Test compressed write to a qcow2 image at an offset above 4 GB 4b7cd2c11SMax Reitz# 5b7cd2c11SMax Reitz# Copyright (C) 2019 Red Hat, Inc. 6b7cd2c11SMax Reitz# 7b7cd2c11SMax Reitz# This program is free software; you can redistribute it and/or modify 8b7cd2c11SMax Reitz# it under the terms of the GNU General Public License as published by 9b7cd2c11SMax Reitz# the Free Software Foundation; either version 2 of the License, or 10b7cd2c11SMax Reitz# (at your option) any later version. 11b7cd2c11SMax Reitz# 12b7cd2c11SMax Reitz# This program is distributed in the hope that it will be useful, 13b7cd2c11SMax Reitz# but WITHOUT ANY WARRANTY; without even the implied warranty of 14b7cd2c11SMax Reitz# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15b7cd2c11SMax Reitz# GNU General Public License for more details. 16b7cd2c11SMax Reitz# 17b7cd2c11SMax Reitz# You should have received a copy of the GNU General Public License 18b7cd2c11SMax Reitz# along with this program. If not, see <http://www.gnu.org/licenses/>. 19b7cd2c11SMax Reitz# 20b7cd2c11SMax Reitz 21b7cd2c11SMax Reitzseq=$(basename "$0") 22b7cd2c11SMax Reitzecho "QA output created by $seq" 23b7cd2c11SMax Reitz 24b7cd2c11SMax Reitzstatus=1 # failure is the default! 25b7cd2c11SMax Reitz 26b7cd2c11SMax Reitz_cleanup() 27b7cd2c11SMax Reitz{ 28b7cd2c11SMax Reitz _cleanup_test_img 29b7cd2c11SMax Reitz} 30b7cd2c11SMax Reitztrap "_cleanup; exit \$status" 0 1 2 3 15 31b7cd2c11SMax Reitz 32b7cd2c11SMax Reitz# get standard environment, filters and checks 33b7cd2c11SMax Reitz. ./common.rc 34b7cd2c11SMax Reitz. ./common.filter 35b7cd2c11SMax Reitz 36b7cd2c11SMax Reitz# This is a qcow2 regression test 37b7cd2c11SMax Reitz_supported_fmt qcow2 38*57284d2aSMax Reitz_supported_proto file fuse 39b7cd2c11SMax Reitz 40b7cd2c11SMax Reitz# External data files do not support compression; 41b7cd2c11SMax Reitz# We need an exact cluster size (2M) and refcount width (2) so we can 42b7cd2c11SMax Reitz# get this test quickly over with; and this in turn require 43b7cd2c11SMax Reitz# compat=1.1 44b7cd2c11SMax Reitz_unsupported_imgopts data_file cluster_size refcount_bits 'compat=0.10' 45b7cd2c11SMax Reitz 46b7cd2c11SMax Reitz# The idea is: Create an empty file, mark the first 4 GB as used, then 47b7cd2c11SMax Reitz# do a compressed write that thus must be put beyond 4 GB. 48b7cd2c11SMax Reitz# (This used to fail because the compressed sector mask was just a 49b7cd2c11SMax Reitz# 32 bit mask, so qemu-img check will count a cluster before 4 GB as 50b7cd2c11SMax Reitz# referenced twice.) 51b7cd2c11SMax Reitz 52b7cd2c11SMax Reitz# We would like to use refcount_bits=1 here, but then qemu-img check 53b7cd2c11SMax Reitz# will throw an error when trying to count a cluster as referenced 54b7cd2c11SMax Reitz# twice. 55b7cd2c11SMax Reitz_make_test_img -o cluster_size=2M,refcount_bits=2 64M 56b7cd2c11SMax Reitz 57b7cd2c11SMax Reitzreft_offs=$(peek_file_be "$TEST_IMG" 48 8) 58b7cd2c11SMax Reitzrefb_offs=$(peek_file_be "$TEST_IMG" $reft_offs 8) 59b7cd2c11SMax Reitz 60b7cd2c11SMax Reitz# We want to cover 4 GB, those are 2048 clusters, equivalent to 61b7cd2c11SMax Reitz# 4096 bit = 512 B. 62b7cd2c11SMax Reitztruncate -s 4G "$TEST_IMG" 63b7cd2c11SMax Reitzfor ((in_refb_offs = 0; in_refb_offs < 512; in_refb_offs += 8)); do 64b7cd2c11SMax Reitz poke_file "$TEST_IMG" $((refb_offs + in_refb_offs)) \ 65b7cd2c11SMax Reitz '\x55\x55\x55\x55\x55\x55\x55\x55' 66b7cd2c11SMax Reitzdone 67b7cd2c11SMax Reitz 68b7cd2c11SMax Reitz$QEMU_IO -c 'write -c -P 42 0 2M' "$TEST_IMG" | _filter_qemu_io 69b7cd2c11SMax Reitz 70b7cd2c11SMax Reitzecho 71b7cd2c11SMax Reitzecho '--- Check ---' 72b7cd2c11SMax Reitz 73b7cd2c11SMax Reitz# This should only print the leaked clusters in the first 4 GB 74b7cd2c11SMax Reitz_check_test_img | grep -v '^Leaked cluster ' 75b7cd2c11SMax Reitz 76b7cd2c11SMax Reitz# success, all done 77b7cd2c11SMax Reitzecho "*** done" 78b7cd2c11SMax Reitzrm -f $seq.full 79b7cd2c11SMax Reitzstatus=0 80