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iotests: Enhance 223 to cover multiple bitmap granularities

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Testing granularity at the same size as the cluster isn't quite
as fun as what happens when it is larger or smaller.  This
enhancement also shows that qemu's nbd server can serve the
same disk over multiple exports simultaneously.

Signed-off-by: Eric Blake <eblake@redhat.com>
Tested-by: John Snow <jsnow@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Eric Blake 2018-11-19 11:29:24 -06:00 • committed by Kevin Wolf
parent ad3a7e4555
commit a237dea330
2 changed files with 60 additions and 15 deletions
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43
tests/qemu-iotests/223
View file

@ -57,10 +57,11 @@ run_qemu()
}
echo
echo "=== Create partially sparse image, then add dirty bitmap ==="
echo "=== Create partially sparse image, then add dirty bitmaps ==="
echo
_make_test_img 4M
# Two bitmaps, to contrast granularity issues
_make_test_img -o cluster_size=4k 4M
$QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io
run_qemu <<EOF
{ "execute": "qmp_capabilities" }
@ -78,7 +79,16 @@ run_qemu <<EOF
"arguments": {
"node": "n",
"name": "b",
"persistent": true
"persistent": true,
"granularity": 65536
}
}
{ "execute": "block-dirty-bitmap-add",
"arguments": {
"node": "n",
"name": "b2",
"persistent": true,
"granularity": 512
}
}
{ "execute": "quit" }
@ -88,10 +98,11 @@ echo
echo "=== Write part of the file under active bitmap ==="
echo
$QEMU_IO -c 'w -P 0x22 2M 2M' "$TEST_IMG" | _filter_qemu_io
$QEMU_IO -c 'w -P 0x22 512 512' -c 'w -P 0x33 2M 2M' "$TEST_IMG" \
| _filter_qemu_io
echo
echo "=== End dirty bitmap, and start serving image over NBD ==="
echo "=== End dirty bitmaps, and start serving image over NBD ==="
echo
_launch_qemu 2> >(_filter_nbd)
@ -103,6 +114,8 @@ _send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
"file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-block-dirty-bitmap-disable",
"arguments":{"node":"n", "name":"b"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-block-dirty-bitmap-disable",
"arguments":{"node":"n", "name":"b2"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
"arguments":{"addr":{"type":"unix",
"data":{"path":"'"$TEST_DIR/nbd"'"}}}}' "return"
@ -110,26 +123,40 @@ _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap",
"arguments":{"name":"n", "bitmap":"b"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n", "name":"n2"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap",
"arguments":{"name":"n2", "bitmap":"b2"}}' "return"
echo
echo "=== Contrast normal status with dirty-bitmap status ==="
echo "=== Contrast normal status to large granularity dirty-bitmap ==="
echo
QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
IMG="driver=nbd,export=n,server.type=unix,server.path=$TEST_DIR/nbd"
$QEMU_IO -r -c 'r -P 0 0 1m' -c 'r -P 0x11 1m 1m' \
-c 'r -P 0x22 2m 2m' --image-opts "$IMG" | _filter_qemu_io
$QEMU_IO -r -c 'r -P 0x22 512 512' -c 'r -P 0 512k 512k' -c 'r -P 0x11 1m 1m' \
-c 'r -P 0x33 2m 2m' --image-opts "$IMG" | _filter_qemu_io
$QEMU_IMG map --output=json --image-opts \
"$IMG" | _filter_qemu_img_map
$QEMU_IMG map --output=json --image-opts \
"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
echo
echo "=== Contrast to small granularity dirty-bitmap ==="
echo
IMG="driver=nbd,export=n2,server.type=unix,server.path=$TEST_DIR/nbd"
$QEMU_IMG map --output=json --image-opts \
"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
echo
echo "=== End NBD server ==="
echo
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
"arguments":{"name":"n"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
"arguments":{"name":"n2"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return"