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d8154b0945
Since qemu-img map + x-dirty-bitmap remains the easiest way to read persistent bitmaps at the moment, it makes a reasonable place to add coverage to ensure we do not regress on the just-added parameters to qemu-img map. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20200513181455.295267-1-eblake@redhat.com>
218 lines
6.7 KiB
Bash
Executable File
218 lines
6.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Test reading dirty bitmap over NBD
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#
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# Copyright (C) 2018-2020 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 $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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nbd_server_stop
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_cleanup_test_img
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_cleanup_qemu
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rm -f "$SOCK_DIR/nbd"
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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.qemu
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. ./common.nbd
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_supported_fmt qcow2
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_supported_proto file # uses NBD as well
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_supported_os Linux
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# Persistent dirty bitmaps require compat=1.1
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_unsupported_imgopts 'compat=0.10'
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do_run_qemu()
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{
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echo Testing: "$@"
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$QEMU -nographic -qmp stdio -serial none "$@"
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echo
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}
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run_qemu()
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{
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do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \
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| _filter_qemu | _filter_imgfmt \
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| _filter_actual_image_size
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}
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echo
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echo "=== Create partially sparse image, then add dirty bitmaps ==="
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echo
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# Two bitmaps, to contrast granularity issues
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# Also note that b will be disabled, while b2 is left enabled, to
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# check for read-only interactions
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_make_test_img -o cluster_size=4k 4M
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$QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io
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run_qemu <<EOF
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{ "execute": "qmp_capabilities" }
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{ "execute": "blockdev-add",
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"arguments": {
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"driver": "$IMGFMT",
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"node-name": "n",
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"file": {
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"driver": "file",
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"filename": "$TEST_IMG"
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}
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}
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}
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{ "execute": "block-dirty-bitmap-add",
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"arguments": {
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"node": "n",
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"name": "b",
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"persistent": true,
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"granularity": 65536
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}
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}
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{ "execute": "block-dirty-bitmap-add",
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"arguments": {
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"node": "n",
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"name": "b2",
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"persistent": true,
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"granularity": 512
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}
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}
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{ "execute": "quit" }
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EOF
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echo
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echo "=== Write part of the file under active bitmap ==="
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echo
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$QEMU_IO -c 'w -P 0x22 512 512' -c 'w -P 0x33 2M 2M' "$TEST_IMG" \
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| _filter_qemu_io
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echo
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echo "=== End dirty bitmaps, and start serving image over NBD ==="
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echo
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_launch_qemu -object iothread,id=io0 2> >(_filter_nbd)
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# Intentionally provoke some errors as well, to check error handling
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silent=
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return"
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
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"arguments":{"driver":"qcow2", "node-name":"n",
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"file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return"
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable",
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"arguments":{"node":"n", "name":"b"}}' "return"
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for attempt in normal iothread; do
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echo
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echo "=== Set up NBD with $attempt access ==="
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echo
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if [ $attempt = iothread ]; then
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-blockdev-set-iothread",
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"arguments":{"node-name":"n", "iothread":"io0"}}' "return"
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fi
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
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"arguments":{"device":"n"}}' "error" # Attempt add without server
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
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"arguments":{"addr":{"type":"unix",
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"data":{"path":"'"$SOCK_DIR/nbd"'"}}}}' "return"
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
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"arguments":{"addr":{"type":"unix",
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"data":{"path":"'"$SOCK_DIR/nbd"1'"}}}}' "error" # Attempt second server
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$QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
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"arguments":{"device":"n", "bitmap":"b"}}' "return"
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
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"arguments":{"device":"nosuch"}}' "error" # Attempt to export missing node
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
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"arguments":{"device":"n"}}' "error" # Attempt to export same name twice
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
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"arguments":{"device":"n", "name":"n2",
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"bitmap":"b2"}}' "error" # enabled vs. read-only
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
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"arguments":{"device":"n", "name":"n2",
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"bitmap":"b3"}}' "error" # Missing bitmap
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
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"arguments":{"device":"n", "name":"n2", "writable":true,
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"description":"some text", "bitmap":"b2"}}' "return"
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$QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
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echo
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echo "=== Contrast normal status to large granularity dirty-bitmap ==="
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echo
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QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
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IMG="driver=nbd,export=n,server.type=unix,server.path=$SOCK_DIR/nbd"
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$QEMU_IO -r -c 'r -P 0x22 512 512' -c 'r -P 0 512k 512k' -c 'r -P 0x11 1m 1m' \
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-c 'r -P 0x33 2m 2m' --image-opts "$IMG" | _filter_qemu_io
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$QEMU_IMG map --output=json --image-opts \
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"$IMG" | _filter_qemu_img_map
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$QEMU_IMG map --output=json --image-opts \
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"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
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echo
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echo "=== Contrast to small granularity dirty-bitmap ==="
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echo
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IMG="driver=nbd,export=n2,server.type=unix,server.path=$SOCK_DIR/nbd"
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$QEMU_IMG map --output=json --image-opts \
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"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
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echo
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echo "=== End qemu NBD server ==="
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echo
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
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"arguments":{"name":"n"}}' "return"
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
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"arguments":{"name":"n2"}}' "return"
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
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"arguments":{"name":"n2"}}' "error" # Attempt duplicate clean
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return"
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "error" # Again
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done
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_send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return"
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wait=yes _cleanup_qemu
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echo
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echo "=== Use qemu-nbd as server ==="
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echo
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nbd_server_start_unix_socket -r -f $IMGFMT -B b "$TEST_IMG"
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IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket"
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$QEMU_IMG map --output=json --image-opts \
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"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
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nbd_server_start_unix_socket -f $IMGFMT -B b2 "$TEST_IMG"
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IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket"
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$QEMU_IMG map --output=json --image-opts --max-length=12345 \
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"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
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$QEMU_IMG map --output=json --image-opts --start-offset=12345 \
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"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
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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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