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bh=jqzktwxcT2PRSfzh8FP8MKamw1zjPoSyRNaqxptdbn4=; b=VW0dO+ODdm/HOIlpp2Zf7DN90Qtn9Vcxxdf/F2PuFVQn/nW31PAqhQSwnoYsOtKBsBZGly rrXnigfhETyMWm8mtmLxo9y9fU8h9801vy65ZFWBKxHpkwamybVNHlC6Me3Zs4b8HBle/P FO7bJ62+Q70OIsttCSmVmjNTzDsoEgQ= X-MC-Unique: _EMM7WjeN_GZtxQBszDhiA-1 From: Hanna Czenczek To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, Hanna Czenczek , Vladimir Sementsov-Ogievskiy , Eric Blake , Kevin Wolf , Stefan Hajnoczi , Fam Zheng Subject: [PATCH v2 4/4] iotests/iov-padding: New test Date: Tue, 11 Apr 2023 19:34:18 +0200 Message-Id: <20230411173418.19549-5-hreitz@redhat.com> In-Reply-To: <20230411173418.19549-1-hreitz@redhat.com> References: <20230411173418.19549-1-hreitz@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=hreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1681234535361100001 Content-Type: text/plain; charset="utf-8" Test that even vectored IO requests with 1024 vector elements that are not aligned to the device's request alignment will succeed. Reviewed-by: Eric Blake Reviewed-by: Vladimir Sementsov-Ogievskiy Signed-off-by: Hanna Czenczek --- tests/qemu-iotests/tests/iov-padding | 85 ++++++++++++++++++++++++ tests/qemu-iotests/tests/iov-padding.out | 59 ++++++++++++++++ 2 files changed, 144 insertions(+) create mode 100755 tests/qemu-iotests/tests/iov-padding create mode 100644 tests/qemu-iotests/tests/iov-padding.out diff --git a/tests/qemu-iotests/tests/iov-padding b/tests/qemu-iotests/test= s/iov-padding new file mode 100755 index 0000000000..b9604900c7 --- /dev/null +++ b/tests/qemu-iotests/tests/iov-padding @@ -0,0 +1,85 @@ +#!/usr/bin/env bash +# group: rw quick +# +# Check the interaction of request padding (to fit alignment restrictions)= with +# vectored I/O from the guest +# +# Copyright Red Hat +# +# 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 . +# + +seq=3D$(basename $0) +echo "QA output created by $seq" + +status=3D1 # failure is the default! + +_cleanup() +{ + _cleanup_test_img +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +cd .. +. ./common.rc +. ./common.filter + +_supported_fmt raw +_supported_proto file + +_make_test_img 1M + +IMGSPEC=3D"driver=3Dblkdebug,align=3D4096,image.driver=3Dfile,image.filena= me=3D$TEST_IMG" + +# Four combinations: +# - Offset 4096, length 1023 * 512 + 512: Fully aligned to 4k +# - Offset 4096, length 1023 * 512 + 4096: Head is aligned, tail is not +# - Offset 512, length 1023 * 512 + 512: Neither head nor tail are aligned +# - Offset 512, length 1023 * 512 + 4096: Tail is aligned, head is not +for start_offset in 4096 512; do + for last_element_length in 512 4096; do + length=3D$((1023 * 512 + $last_element_length)) + + echo + echo "=3D=3D performing 1024-element vectored requests to image (o= ffset: $start_offset; length: $length) =3D=3D" + + # Fill with data for testing + $QEMU_IO -c 'write -P 1 0 1M' "$TEST_IMG" | _filter_qemu_io + + # 1023 512-byte buffers, and then one with length $last_element_le= ngth + cmd_params=3D"-P 2 $start_offset $(yes 512 | head -n 1023 | tr '\n= ' ' ') $last_element_length" + QEMU_IO_OPTIONS=3D"$QEMU_IO_OPTIONS_NO_FMT" $QEMU_IO \ + -c "writev $cmd_params" \ + --image-opts \ + "$IMGSPEC" \ + | _filter_qemu_io + + # Read all patterns -- read the part we just wrote with writev twi= ce, + # once "normally", and once with a readv, so we see that that work= s, too + QEMU_IO_OPTIONS=3D"$QEMU_IO_OPTIONS_NO_FMT" $QEMU_IO \ + -c "read -P 1 0 $start_offset" \ + -c "read -P 2 $start_offset $length" \ + -c "readv $cmd_params" \ + -c "read -P 1 $((start_offset + length)) $((1024 * 1024 - leng= th - start_offset))" \ + --image-opts \ + "$IMGSPEC" \ + | _filter_qemu_io + done +done + +# success, all done +echo "*** done" +rm -f $seq.full +status=3D0 diff --git a/tests/qemu-iotests/tests/iov-padding.out b/tests/qemu-iotests/= tests/iov-padding.out new file mode 100644 index 0000000000..e07a91fac7 --- /dev/null +++ b/tests/qemu-iotests/tests/iov-padding.out @@ -0,0 +1,59 @@ +QA output created by iov-padding +Formatting 'TEST_DIR/t.IMGFMT', fmt=3DIMGFMT size=3D1048576 + +=3D=3D performing 1024-element vectored requests to image (offset: 4096; l= ength: 524288) =3D=3D +wrote 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 524288/524288 bytes at offset 4096 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 4096/4096 bytes at offset 0 +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 524288/524288 bytes at offset 4096 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 524288/524288 bytes at offset 4096 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 520192/520192 bytes at offset 528384 +508 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +=3D=3D performing 1024-element vectored requests to image (offset: 4096; l= ength: 527872) =3D=3D +wrote 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 527872/527872 bytes at offset 4096 +515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 4096/4096 bytes at offset 0 +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 527872/527872 bytes at offset 4096 +515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 527872/527872 bytes at offset 4096 +515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 516608/516608 bytes at offset 531968 +504.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +=3D=3D performing 1024-element vectored requests to image (offset: 512; le= ngth: 524288) =3D=3D +wrote 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 524288/524288 bytes at offset 512 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 512/512 bytes at offset 0 +512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 524288/524288 bytes at offset 512 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 524288/524288 bytes at offset 512 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 523776/523776 bytes at offset 524800 +511.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +=3D=3D performing 1024-element vectored requests to image (offset: 512; le= ngth: 527872) =3D=3D +wrote 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 527872/527872 bytes at offset 512 +515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 512/512 bytes at offset 0 +512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 527872/527872 bytes at offset 512 +515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 527872/527872 bytes at offset 512 +515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 520192/520192 bytes at offset 528384 +508 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +*** done --=20 2.39.1