111a82d14SPhilippe Mathieu-Daudé#!/usr/bin/env bash 29dd003a9SVladimir Sementsov-Ogievskiy# group: rw auto backing 3e6ea2312SMax Reitz# 4e6ea2312SMax Reitz# Commit changes into backing chains and empty the top image if the 5e6ea2312SMax Reitz# backing image is not explicitly specified 6e6ea2312SMax Reitz# 7e6ea2312SMax Reitz# Copyright (C) 2014 Red Hat, Inc. 8e6ea2312SMax Reitz# 9e6ea2312SMax Reitz# This program is free software; you can redistribute it and/or modify 10e6ea2312SMax Reitz# it under the terms of the GNU General Public License as published by 11e6ea2312SMax Reitz# the Free Software Foundation; either version 2 of the License, or 12e6ea2312SMax Reitz# (at your option) any later version. 13e6ea2312SMax Reitz# 14e6ea2312SMax Reitz# This program is distributed in the hope that it will be useful, 15e6ea2312SMax Reitz# but WITHOUT ANY WARRANTY; without even the implied warranty of 16e6ea2312SMax Reitz# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17e6ea2312SMax Reitz# GNU General Public License for more details. 18e6ea2312SMax Reitz# 19e6ea2312SMax Reitz# You should have received a copy of the GNU General Public License 20e6ea2312SMax Reitz# along with this program. If not, see <http://www.gnu.org/licenses/>. 21e6ea2312SMax Reitz# 22e6ea2312SMax Reitz 23e6ea2312SMax Reitz# creator 24*42a5009dSJohn Snowowner=hreitz@redhat.com 25e6ea2312SMax Reitz 26e6ea2312SMax Reitzseq="$(basename $0)" 27e6ea2312SMax Reitzecho "QA output created by $seq" 28e6ea2312SMax Reitz 29e6ea2312SMax Reitzstatus=1 # failure is the default! 30e6ea2312SMax Reitz 31e6ea2312SMax Reitz_cleanup() 32e6ea2312SMax Reitz{ 33e6ea2312SMax Reitz _cleanup_test_img 34e6ea2312SMax Reitz _rm_test_img "$TEST_IMG.itmd" 35e6ea2312SMax Reitz} 36e6ea2312SMax Reitztrap "_cleanup; exit \$status" 0 1 2 3 15 37e6ea2312SMax Reitz 38e6ea2312SMax Reitz# get standard environment, filters and checks 39e6ea2312SMax Reitz. ./common.rc 40e6ea2312SMax Reitz. ./common.filter 41e6ea2312SMax Reitz. ./common.pattern 42e6ea2312SMax Reitz 43e6ea2312SMax Reitz# Any format supporting backing files and bdrv_make_empty 44e6ea2312SMax Reitz_supported_fmt qcow qcow2 4557284d2aSMax Reitz_supported_proto file fuse 46e6ea2312SMax Reitz_supported_os Linux 47e6ea2312SMax Reitz 48e6ea2312SMax Reitz 49a3e1505dSEric Blake# Four main passes: 50e6ea2312SMax Reitz# 0: Two-layer backing chain, commit to upper backing file (implicitly) 51e6ea2312SMax Reitz# (in this case, the top image will be emptied) 52e6ea2312SMax Reitz# 1: Two-layer backing chain, commit to upper backing file (explicitly) 53e6ea2312SMax Reitz# (in this case, the top image will implicitly stay unchanged) 54e6ea2312SMax Reitz# 2: Two-layer backing chain, commit to upper backing file (implicitly with -d) 55e6ea2312SMax Reitz# (in this case, the top image will explicitly stay unchanged) 56e6ea2312SMax Reitz# 3: Two-layer backing chain, commit to lower backing file 57e6ea2312SMax Reitz# (in this case, the top image will implicitly stay unchanged) 58e6ea2312SMax Reitz# 59e6ea2312SMax Reitz# 020 already tests committing, so this only tests whether image chains are 60e6ea2312SMax Reitz# working properly and that all images above the base are emptied; therefore, 61a3e1505dSEric Blake# no complicated patterns are necessary. Check near the 2G mark, as qcow2 62a3e1505dSEric Blake# has been buggy at that boundary in the past. 63e6ea2312SMax Reitzfor i in 0 1 2 3; do 64e6ea2312SMax Reitz 65e6ea2312SMax Reitzecho 6607ff948bSDaniel P. Berrangeecho "=== Test pass $i ===" 67e6ea2312SMax Reitzecho 68e6ea2312SMax Reitz 69f82c5b17SEric Blakelen=$((2100 * 1024 * 1024 + 512)) # larger than 2G, and not cluster aligned 70f82c5b17SEric BlakeTEST_IMG="$TEST_IMG.base" _make_test_img $len 71b66ff2c2SEric BlakeTEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $len 72b66ff2c2SEric Blake_make_test_img -b "$TEST_IMG.itmd" -F $IMGFMT $len 73e6ea2312SMax Reitz 74f82c5b17SEric Blake$QEMU_IO -c "write -P 1 0x7ffd0000 192k" "$TEST_IMG.base" | _filter_qemu_io 75f82c5b17SEric Blake$QEMU_IO -c "write -P 2 0x7ffe0000 128k" "$TEST_IMG.itmd" | _filter_qemu_io 76f82c5b17SEric Blake$QEMU_IO -c "write -P 3 0x7fff0000 64k" "$TEST_IMG" | _filter_qemu_io 77f82c5b17SEric Blake$QEMU_IO -c "write -P 4 $(($len - 512)) 512" "$TEST_IMG" | _filter_qemu_io 78e6ea2312SMax Reitz 79e6ea2312SMax Reitzif [ $i -lt 3 ]; then 80e6ea2312SMax Reitz if [ $i == 0 ]; then 81e6ea2312SMax Reitz # -b "$TEST_IMG.itmd" should be the default (that is, committing to the 82e6ea2312SMax Reitz # first backing file in the chain) 83e6ea2312SMax Reitz $QEMU_IMG commit "$TEST_IMG" 84e6ea2312SMax Reitz elif [ $i == 1 ]; then 85e6ea2312SMax Reitz # explicitly specify the commit target (this should imply -d) 86e6ea2312SMax Reitz $QEMU_IMG commit -b "$TEST_IMG.itmd" "$TEST_IMG" 87e6ea2312SMax Reitz else 88e6ea2312SMax Reitz # do not explicitly specify the commit target, but use -d to leave the 89e6ea2312SMax Reitz # top image unchanged 90e6ea2312SMax Reitz $QEMU_IMG commit -d "$TEST_IMG" 91e6ea2312SMax Reitz fi 92e6ea2312SMax Reitz 93e6ea2312SMax Reitz # Bottom should be unchanged 94a3e1505dSEric Blake $QEMU_IO -c 'read -P 1 0x7ffd0000 192k' "$TEST_IMG.base" | _filter_qemu_io 95f82c5b17SEric Blake $QEMU_IO -c "read -P 0 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io 96e6ea2312SMax Reitz 97e6ea2312SMax Reitz # Intermediate should contain changes from top 98a3e1505dSEric Blake $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io 99a3e1505dSEric Blake $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io 100a3e1505dSEric Blake $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io 101f82c5b17SEric Blake $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.itmd" | _filter_qemu_io 102e6ea2312SMax Reitz 103e6ea2312SMax Reitz # And in pass 0, the top image should be empty, whereas in both other passes 104e6ea2312SMax Reitz # it should be unchanged (which is both checked by qemu-img map) 105e6ea2312SMax Reitzelse 106e6ea2312SMax Reitz $QEMU_IMG commit -b "$TEST_IMG.base" "$TEST_IMG" 107e6ea2312SMax Reitz 108e6ea2312SMax Reitz # Bottom should contain all changes 109a3e1505dSEric Blake $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.base" | _filter_qemu_io 110a3e1505dSEric Blake $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.base" | _filter_qemu_io 111a3e1505dSEric Blake $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.base" | _filter_qemu_io 112f82c5b17SEric Blake $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io 113e6ea2312SMax Reitz 114e6ea2312SMax Reitz # Both top and intermediate should be unchanged 115e6ea2312SMax Reitzfi 116e6ea2312SMax Reitz 117e6ea2312SMax Reitz$QEMU_IMG map "$TEST_IMG.base" | _filter_qemu_img_map 118e6ea2312SMax Reitz$QEMU_IMG map "$TEST_IMG.itmd" | _filter_qemu_img_map 119e6ea2312SMax Reitz$QEMU_IMG map "$TEST_IMG" | _filter_qemu_img_map 120e6ea2312SMax Reitz 121e6ea2312SMax Reitzdone 122e6ea2312SMax Reitz 123e6ea2312SMax Reitz 124e6ea2312SMax Reitz# success, all done 125e6ea2312SMax Reitzecho "*** done" 126e6ea2312SMax Reitzrm -f $seq.full 127e6ea2312SMax Reitzstatus=0 128