129 lines
3.4 KiB
Bash
Executable File
129 lines
3.4 KiB
Bash
Executable File
#!/bin/bash
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#
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# When using a backing file for the output image in qemu-img convert,
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# the backing file clusters must not copied. The data must still be
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# read correctly.
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#
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# Copyright (C) 2009 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# creator
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owner=kwolf@redhat.com
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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rm -f $TEST_IMG.base
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rm -f $TEST_IMG.orig
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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. ./common.pattern
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# Any format supporting backing files
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_supported_fmt qcow qcow2 vmdk
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_supported_os Linux
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TEST_OFFSETS="0 4294967296"
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CLUSTER_SIZE=65536
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_make_test_img 6G
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echo "Filling base image"
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echo
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for offset in $TEST_OFFSETS; do
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# Some clusters with alternating backing file/image file reads
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io_pattern writev $(( offset )) 512 1024 64 42
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# Complete backing clusters
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io_pattern writev $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42
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done
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_check_test_img
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echo "Creating test image with backing file"
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echo
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mv $TEST_IMG $TEST_IMG.base
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_make_test_img -b $TEST_IMG.base 6G
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echo "Filling test image"
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echo
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for offset in $TEST_OFFSETS; do
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# Some clusters with alternating backing file/image file reads
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io_pattern writev $(( offset + 512 )) 512 1024 64 43
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# Complete test image clusters
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io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43
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done
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_check_test_img
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mv $TEST_IMG $TEST_IMG.orig
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# Test the conversion twice: One test with the old-style -B option and another
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# one with -o backing_file
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for backing_option in "-B $TEST_IMG.base" "-o backing_file=$TEST_IMG.base"; do
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echo
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echo Testing conversion with $backing_option | _filter_testdir
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echo
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$QEMU_IMG convert -O $IMGFMT $backing_option $TEST_IMG.orig $TEST_IMG
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echo "Checking if backing clusters are allocated when they shouldn't"
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echo
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for offset in $TEST_OFFSETS; do
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# Complete backing clusters
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is_allocated $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1
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done
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echo "Reading"
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echo
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for offset in $TEST_OFFSETS; do
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# Some clusters with alternating backing file/image file reads
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io_pattern readv $(( offset )) 512 1024 64 42
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io_pattern readv $(( offset + 512 )) 512 1024 64 43
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# Complete test image clusters
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io_pattern readv $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42
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io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43
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# Empty sectors
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io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1
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done
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_check_test_img
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done
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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