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1 #!/usr/bin/env bash 2 # group: rw quick 3 # 4 # Test qemu-nbd vs. unaligned images 5 # 6 # Copyright (C) 2018-2019 Red Hat, Inc. 7 # 8 # This program is free software; you can redistribute it and/or modify 9 # it under the terms of the GNU General Public License as published by 10 # the Free Software Foundation; either version 2 of the License, or 11 # (at your option) any later version. 12 # 13 # This program is distributed in the hope that it will be useful, 14 # but WITHOUT ANY WARRANTY; without even the implied warranty of 15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 # GNU General Public License for more details. 17 # 18 # You should have received a copy of the GNU General Public License 19 # along with this program. If not, see <http://www.gnu.org/licenses/>. 20 # 21 22 seq="$(basename $0)" 23 echo "QA output created by $seq" 24 25 status=1 # failure is the default! 26 27 _cleanup() 28 { 29 _cleanup_test_img 30 rm -f "$TEST_DIR/server.log" 31 nbd_server_stop 32 } 33 trap "_cleanup; exit \$status" 0 1 2 3 15 34 35 # get standard environment, filters and checks 36 . ./common.rc 37 . ./common.filter 38 . ./common.nbd 39 40 _supported_fmt raw 41 _supported_proto nbd 42 _supported_os Linux 43 _require_command QEMU_NBD 44 45 # can't use _make_test_img, because qemu-img rounds image size up, 46 # and because we want to use Unix socket rather than TCP port. Likewise, 47 # we have to redirect TEST_IMG to our server. 48 # This tests that we can deal with the hole at the end of an unaligned 49 # raw file (either because the server doesn't advertise alignment too 50 # large, or because the client ignores the server's noncompliance - even 51 # though we can't actually wire iotests into checking trace messages). 52 printf %01000d 0 > "$TEST_IMG_FILE" 53 TEST_IMG="nbd:unix:$nbd_unix_socket" 54 55 echo 56 echo "=== Exporting unaligned raw image, natural alignment ===" 57 echo 58 59 nbd_server_start_unix_socket -f $IMGFMT "$TEST_IMG_FILE" 60 61 $QEMU_NBD_PROG --list -k $nbd_unix_socket | _filter_qemu_nbd_exports 62 $QEMU_IMG map -f raw --output=json "$TEST_IMG" | _filter_qemu_img_map 63 $QEMU_IO -f raw -c map "$TEST_IMG" 64 nbd_server_stop 65 66 echo 67 echo "=== Exporting unaligned raw image, forced server sector alignment ===" 68 echo 69 70 # Intentionally omit '-f' to force image probing, which in turn forces 71 # sector alignment, here at the server. 72 nbd_server_start_unix_socket "$TEST_IMG_FILE" 2> "$TEST_DIR/server.log" 73 74 $QEMU_NBD_PROG --list -k $nbd_unix_socket | _filter_qemu_nbd_exports 75 $QEMU_IMG map -f raw --output=json "$TEST_IMG" | _filter_qemu_img_map 76 $QEMU_IO -f raw -c map "$TEST_IMG" 77 nbd_server_stop 78 cat "$TEST_DIR/server.log" | _filter_testdir 79 80 echo 81 echo "=== Exporting unaligned raw image, forced client sector alignment ===" 82 echo 83 84 # Now force sector alignment at the client. 85 nbd_server_start_unix_socket -f $IMGFMT "$TEST_IMG_FILE" 86 87 $QEMU_NBD_PROG --list -k $nbd_unix_socket | _filter_qemu_nbd_exports 88 $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map 89 $QEMU_IO -c map "$TEST_IMG" 90 nbd_server_stop 91 92 # Not tested yet: we also want to ensure that qemu as NBD client does 93 # not access beyond the end of a server's advertised unaligned size: 94 # nbdkit -U - memory size=513 --run 'qemu-io -f raw -c "r 512 512" $nbd' 95 # However, since qemu as server always rounds up to a sector alignment, 96 # we would have to use nbdkit to provoke the current client failures. 97 98 # success, all done 99 echo '*** done' 100 rm -f $seq.full 101 status=0