diff options
Diffstat (limited to 'tests')
| -rwxr-xr-x | tests/qemu-iotests/250 | 78 | ||||
| -rw-r--r-- | tests/qemu-iotests/250.out | 16 | ||||
| -rw-r--r-- | tests/qemu-iotests/group | 1 |
3 files changed, 95 insertions, 0 deletions
diff --git a/tests/qemu-iotests/250 b/tests/qemu-iotests/250 new file mode 100755 index 0000000..c9c0a84 --- /dev/null +++ b/tests/qemu-iotests/250 @@ -0,0 +1,78 @@ +#!/usr/bin/env bash +# +# Test big discard in qcow2 shrink +# +# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + +# creator +owner=vsementsov@virtuozzo.com + +seq=`basename $0` +echo "QA output created by $seq" + +status=1 # failure is the default! + +_cleanup() +{ + _cleanup_test_img +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter + +_supported_fmt qcow2 +_supported_proto file +_supported_os Linux + +# This test checks that qcow2_process_discards does not truncate a discard +# request > 2G. +# To reproduce bug we need to overflow int by one sequential discard, so we +# need size > 2G, bigger cluster size (as with default 64k we may have maximum +# of 512M sequential data, corresponding to one L1 entry), and we need some +# data of the beginning of the disk mapped to the end of file to prevent +# bdrv_co_truncate(bs->file) call in qcow2_co_truncate(), which might succeed +# anyway. + +disk_usage() +{ + du --block-size=1 $1 | awk '{print $1}' +} + +size=2100M +IMGOPTS="cluster_size=1M,preallocation=metadata" + +_make_test_img $size +$QEMU_IO -c 'discard 0 10M' -c 'discard 2090M 10M' \ + -c 'write 2090M 10M' -c 'write 0 10M' "$TEST_IMG" | _filter_qemu_io + +# Check that our trick with swapping first and last 10M chunks succeeded. +# Otherwise test may pass even if bdrv_pdiscard() fails in +# qcow2_process_discards() +$QEMU_IMG map "$TEST_IMG" | _filter_testdir + +before=$(disk_usage "$TEST_IMG") +$QEMU_IMG resize --shrink "$TEST_IMG" 5M +after=$(disk_usage "$TEST_IMG") + +echo "Disk usage delta: $((before - after))" + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 diff --git a/tests/qemu-iotests/250.out b/tests/qemu-iotests/250.out new file mode 100644 index 0000000..f480fd2 --- /dev/null +++ b/tests/qemu-iotests/250.out @@ -0,0 +1,16 @@ +QA output created by 250 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2202009600 preallocation=metadata +discard 10485760/10485760 bytes at offset 0 +10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +discard 10485760/10485760 bytes at offset 2191523840 +10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 10485760/10485760 bytes at offset 2191523840 +10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 10485760/10485760 bytes at offset 0 +10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Offset Length Mapped to File +0 0xa00000 0x82f00000 TEST_DIR/t.qcow2 +0x82a00000 0xa00000 0x500000 TEST_DIR/t.qcow2 +Image resized. +Disk usage delta: 15728640 +*** done diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index 88049ad..f3b6d60 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -262,6 +262,7 @@ 247 rw quick 248 rw quick 249 rw auto quick +250 rw auto quick 252 rw auto backing quick 253 rw auto quick 254 rw auto backing quick |