90 lines
2.5 KiB
Plaintext
90 lines
2.5 KiB
Plaintext
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#!/usr/bin/env bash
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#
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# qcow2 v3-exclusive error path testing
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# (026 tests paths common to v2 and v3)
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#
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# Copyright (C) 2020 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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seq=$(basename $0)
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echo "QA output created by $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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rm "$TEST_DIR/blkdebug.conf"
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rm -f "$TEST_IMG.data_file"
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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. ./common.pattern
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_supported_fmt qcow2
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_supported_proto file
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# This is a v3-exclusive test;
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# As for data_file, error paths often very much depend on whether
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# there is an external data file or not; so we create one exactly when
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# we want to test it
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_unsupported_imgopts 'compat=0.10' data_file
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echo
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echo === Avoid freeing external data clusters on failure ===
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echo
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cat > "$TEST_DIR/blkdebug.conf" <<EOF
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[inject-error]
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event = "write_aio"
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errno = "5"
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once = "on"
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EOF
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# Test what happens when there is an error when writing to an external
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# data file instead of when writing to a preallocated zero cluster
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_make_test_img -o "data_file=$TEST_IMG.data_file" 64k
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# Put blkdebug above the data-file, and a raw node on top of that so
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# that blkdebug will see a write_aio event and emit an error. This
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# will then trigger the alloc abort code, which we want to test here.
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$QEMU_IO -c "write 0 64k" \
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"json:{
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'driver': 'qcow2',
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'file': { 'driver': 'file', 'filename': '$TEST_IMG' },
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'data-file': {
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'driver': 'raw',
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'file': {
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'driver': 'blkdebug',
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'config': '$TEST_DIR/blkdebug.conf',
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'image': {
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'driver': 'file',
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'filename': '$TEST_IMG.data_file'
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}
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}
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}
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}" \
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| _filter_qemu_io
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_check_test_img
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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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