From 3f3fe284efba3021b8a06bddcff75efa4e62c615 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Sat, 29 Apr 2017 14:14:19 -0500 Subject: [PATCH] tests: Add coverage for recent block geometry fixes Use blkdebug's new geometry constraints to emulate setups that have needed past regression fixes: write zeroes asserting when running through a loopback block device with max-transfer smaller than cluster size, and discard rounding away portions of requests not aligned to preferred boundaries. Also, add coverage that the block layer is honoring max transfer limits. For now, a single iotest performs all actions, with the idea that we can add future blkdebug constraint test cases in the same file; but it can be split into multiple iotests if we find reason to run one portion of the test in more setups than what are possible in the other. For reference, the final portion of the test (checking whether discard passes as much as possible to the lowest layers of the stack) works as follows: qemu-io: discard 30M at 80000001, passed to blkdebug blkdebug: discard 511 bytes at 80000001, -ENOTSUP (smaller than blkdebug's 512 align) blkdebug: discard 14371328 bytes at 80000512, passed to qcow2 qcow2: discard 739840 bytes at 80000512, -ENOTSUP (smaller than qcow2's 1M align) qcow2: discard 13M bytes at 77M, succeeds blkdebug: discard 15M bytes at 90M, passed to qcow2 qcow2: discard 15M bytes at 90M, succeeds blkdebug: discard 1356800 bytes at 105M, passed to qcow2 qcow2: discard 1M at 105M, succeeds qcow2: discard 308224 bytes at 106M, -ENOTSUP (smaller than qcow2's 1M align) blkdebug: discard 1 byte at 111457280, -ENOTSUP (smaller than blkdebug's 512 align) Signed-off-by: Eric Blake Reviewed-by: Max Reitz Message-id: 20170429191419.30051-10-eblake@redhat.com [mreitz: For cooperation with image locking, add -r to the qemu-io invocation which verifies the image content] Signed-off-by: Max Reitz (cherry picked from commit 40812d937392fddc11f72a668aef251039cc15ce) Conflicts: tests/qemu-iotests/group * dropped context dependency on other test groups * prereq for 81c219a Signed-off-by: Michael Roth --- tests/qemu-iotests/177 | 114 +++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/177.out | 49 ++++++++++++++++ tests/qemu-iotests/group | 1 + 3 files changed, 164 insertions(+) create mode 100755 tests/qemu-iotests/177 create mode 100644 tests/qemu-iotests/177.out diff --git a/tests/qemu-iotests/177 b/tests/qemu-iotests/177 new file mode 100755 index 0000000000..2005c174f2 --- /dev/null +++ b/tests/qemu-iotests/177 @@ -0,0 +1,114 @@ +#!/bin/bash +# +# Test corner cases with unusual block geometries +# +# Copyright (C) 2016-2017 Red Hat, Inc. +# +# 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 . +# + +# creator +owner=eblake@redhat.com + +seq=`basename $0` +echo "QA output created by $seq" + +here=`pwd` +status=1 # failure is the default! + +_cleanup() +{ + _cleanup_test_img +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter + +_supported_fmt qcow2 +_supported_proto file + +CLUSTER_SIZE=1M +size=128M +options=driver=blkdebug,image.driver=qcow2 + +echo +echo "== setting up files ==" + +TEST_IMG="$TEST_IMG.base" _make_test_img $size +$QEMU_IO -c "write -P 11 0 $size" "$TEST_IMG.base" | _filter_qemu_io +_make_test_img -b "$TEST_IMG.base" +$QEMU_IO -c "write -P 22 0 $size" "$TEST_IMG" | _filter_qemu_io + +# Limited to 64k max-transfer +echo +echo "== constrained alignment and max-transfer ==" +limits=align=4k,max-transfer=64k +$QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \ + -c "write -P 33 1000 128k" -c "read -P 33 1000 128k" | _filter_qemu_io + +echo +echo "== write zero with constrained max-transfer ==" +limits=align=512,max-transfer=64k,opt-write-zero=$CLUSTER_SIZE +$QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \ + -c "write -z 8003584 2093056" | _filter_qemu_io + +# non-power-of-2 write-zero/discard alignments +echo +echo "== non-power-of-2 write zeroes limits ==" + +limits=align=512,opt-write-zero=15M,max-write-zero=15M,opt-discard=15M,max-discard=15M +$QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \ + -c "write -z 32M 32M" | _filter_qemu_io + +echo +echo "== non-power-of-2 discard limits ==" + +limits=align=512,opt-write-zero=15M,max-write-zero=15M,opt-discard=15M,max-discard=15M +$QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \ + -c "discard 80000001 30M" | _filter_qemu_io + +echo +echo "== verify image content ==" + +function verify_io() +{ + if ($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | + grep "compat: 0.10" > /dev/null); then + # For v2 images, discarded clusters are read from the backing file + discarded=11 + else + # Discarded clusters are zeroed for v3 or later + discarded=0 + fi + + echo read -P 22 0 1000 + echo read -P 33 1000 128k + echo read -P 22 132072 7871512 + echo read -P 0 8003584 2093056 + echo read -P 22 10096640 23457792 + echo read -P 0 32M 32M + echo read -P 22 64M 13M + echo read -P $discarded 77M 29M + echo read -P 22 106M 22M +} + +verify_io | $QEMU_IO -r "$TEST_IMG" | _filter_qemu_io + +_check_test_img + +# success, all done +echo "*** done" +status=0 diff --git a/tests/qemu-iotests/177.out b/tests/qemu-iotests/177.out new file mode 100644 index 0000000000..e887542678 --- /dev/null +++ b/tests/qemu-iotests/177.out @@ -0,0 +1,49 @@ +QA output created by 177 + +== setting up files == +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 +wrote 134217728/134217728 bytes at offset 0 +128 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base +wrote 134217728/134217728 bytes at offset 0 +128 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== constrained alignment and max-transfer == +wrote 131072/131072 bytes at offset 1000 +128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 131072/131072 bytes at offset 1000 +128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== write zero with constrained max-transfer == +wrote 2093056/2093056 bytes at offset 8003584 +1.996 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== non-power-of-2 write zeroes limits == +wrote 33554432/33554432 bytes at offset 33554432 +32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== non-power-of-2 discard limits == +discard 31457280/31457280 bytes at offset 80000001 +30 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== verify image content == +read 1000/1000 bytes at offset 0 +1000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 131072/131072 bytes at offset 1000 +128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 7871512/7871512 bytes at offset 132072 +7.507 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 2093056/2093056 bytes at offset 8003584 +1.996 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 23457792/23457792 bytes at offset 10096640 +22.371 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 33554432/33554432 bytes at offset 33554432 +32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 13631488/13631488 bytes at offset 67108864 +13 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 30408704/30408704 bytes at offset 80740352 +29 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 23068672/23068672 bytes at offset 111149056 +22 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +No errors were found on the image. +*** done diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index 43142ddfcf..a513ec75a1 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -169,3 +169,4 @@ 174 auto 175 auto quick 176 rw auto backing +177 rw auto quick -- 2.39.2