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187 lines
7.3 KiB
187 lines
7.3 KiB
From add833b5de202d6765dda56c8773985fbe7f40a6 Mon Sep 17 00:00:00 2001
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From: Hanna Czenczek <hreitz@redhat.com>
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Date: Tue, 11 Apr 2023 19:34:18 +0200
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Subject: [PATCH 4/9] iotests/iov-padding: New test
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RH-Author: Hanna Czenczek <hreitz@redhat.com>
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RH-MergeRequest: 189: block: Split padded I/O vectors exceeding IOV_MAX
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RH-Bugzilla: 2174676
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Commit: [4/5] b32715b5c2a3e2add39c5ed6e8f71df56e0b91a0 (hreitz/qemu-kvm-c-9-s)
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Test that even vectored IO requests with 1024 vector elements that are
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not aligned to the device's request alignment will succeed.
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
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Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
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Message-Id: <20230411173418.19549-5-hreitz@redhat.com>
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(cherry picked from commit d7e1905e3f54ff9512db4c7a946a8603b62b108d)
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Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
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---
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tests/qemu-iotests/tests/iov-padding | 85 ++++++++++++++++++++++++
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tests/qemu-iotests/tests/iov-padding.out | 59 ++++++++++++++++
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2 files changed, 144 insertions(+)
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create mode 100755 tests/qemu-iotests/tests/iov-padding
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create mode 100644 tests/qemu-iotests/tests/iov-padding.out
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diff --git a/tests/qemu-iotests/tests/iov-padding b/tests/qemu-iotests/tests/iov-padding
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new file mode 100755
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index 0000000000..b9604900c7
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--- /dev/null
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+++ b/tests/qemu-iotests/tests/iov-padding
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@@ -0,0 +1,85 @@
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+#!/usr/bin/env bash
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+# group: rw quick
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+#
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+# Check the interaction of request padding (to fit alignment restrictions) with
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+# vectored I/O from the guest
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+#
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+# Copyright Red Hat
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+#
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program. If not, see <http://www.gnu.org/licenses/>.
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+#
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+
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+seq=$(basename $0)
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+echo "QA output created by $seq"
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+
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+status=1 # failure is the default!
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+
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+_cleanup()
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+{
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+ _cleanup_test_img
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+}
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+trap "_cleanup; exit \$status" 0 1 2 3 15
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+
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+# get standard environment, filters and checks
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+cd ..
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+. ./common.rc
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+. ./common.filter
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+
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+_supported_fmt raw
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+_supported_proto file
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+
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+_make_test_img 1M
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+
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+IMGSPEC="driver=blkdebug,align=4096,image.driver=file,image.filename=$TEST_IMG"
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+
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+# Four combinations:
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+# - Offset 4096, length 1023 * 512 + 512: Fully aligned to 4k
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+# - Offset 4096, length 1023 * 512 + 4096: Head is aligned, tail is not
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+# - Offset 512, length 1023 * 512 + 512: Neither head nor tail are aligned
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+# - Offset 512, length 1023 * 512 + 4096: Tail is aligned, head is not
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+for start_offset in 4096 512; do
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+ for last_element_length in 512 4096; do
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+ length=$((1023 * 512 + $last_element_length))
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+
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+ echo
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+ echo "== performing 1024-element vectored requests to image (offset: $start_offset; length: $length) =="
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+
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+ # Fill with data for testing
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+ $QEMU_IO -c 'write -P 1 0 1M' "$TEST_IMG" | _filter_qemu_io
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+
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+ # 1023 512-byte buffers, and then one with length $last_element_length
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+ cmd_params="-P 2 $start_offset $(yes 512 | head -n 1023 | tr '\n' ' ') $last_element_length"
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+ QEMU_IO_OPTIONS="$QEMU_IO_OPTIONS_NO_FMT" $QEMU_IO \
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+ -c "writev $cmd_params" \
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+ --image-opts \
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+ "$IMGSPEC" \
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+ | _filter_qemu_io
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+
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+ # Read all patterns -- read the part we just wrote with writev twice,
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+ # once "normally", and once with a readv, so we see that that works, too
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+ QEMU_IO_OPTIONS="$QEMU_IO_OPTIONS_NO_FMT" $QEMU_IO \
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+ -c "read -P 1 0 $start_offset" \
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+ -c "read -P 2 $start_offset $length" \
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+ -c "readv $cmd_params" \
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+ -c "read -P 1 $((start_offset + length)) $((1024 * 1024 - length - start_offset))" \
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+ --image-opts \
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+ "$IMGSPEC" \
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+ | _filter_qemu_io
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+ done
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+done
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+
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+# success, all done
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+echo "*** done"
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+rm -f $seq.full
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+status=0
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diff --git a/tests/qemu-iotests/tests/iov-padding.out b/tests/qemu-iotests/tests/iov-padding.out
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new file mode 100644
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index 0000000000..e07a91fac7
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--- /dev/null
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+++ b/tests/qemu-iotests/tests/iov-padding.out
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@@ -0,0 +1,59 @@
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+QA output created by iov-padding
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+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
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+
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+== performing 1024-element vectored requests to image (offset: 4096; length: 524288) ==
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+wrote 1048576/1048576 bytes at offset 0
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+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+wrote 524288/524288 bytes at offset 4096
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+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 4096/4096 bytes at offset 0
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+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 524288/524288 bytes at offset 4096
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+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 524288/524288 bytes at offset 4096
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+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 520192/520192 bytes at offset 528384
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+508 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+
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+== performing 1024-element vectored requests to image (offset: 4096; length: 527872) ==
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+wrote 1048576/1048576 bytes at offset 0
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+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+wrote 527872/527872 bytes at offset 4096
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+515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 4096/4096 bytes at offset 0
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+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 527872/527872 bytes at offset 4096
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+515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 527872/527872 bytes at offset 4096
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+515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 516608/516608 bytes at offset 531968
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+504.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+
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+== performing 1024-element vectored requests to image (offset: 512; length: 524288) ==
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+wrote 1048576/1048576 bytes at offset 0
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+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+wrote 524288/524288 bytes at offset 512
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+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 512/512 bytes at offset 0
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+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 524288/524288 bytes at offset 512
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+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 524288/524288 bytes at offset 512
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+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 523776/523776 bytes at offset 524800
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+511.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+
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+== performing 1024-element vectored requests to image (offset: 512; length: 527872) ==
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+wrote 1048576/1048576 bytes at offset 0
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+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+wrote 527872/527872 bytes at offset 512
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+515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 512/512 bytes at offset 0
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+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 527872/527872 bytes at offset 512
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+515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 527872/527872 bytes at offset 512
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+515.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 520192/520192 bytes at offset 528384
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+508 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+*** done
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--
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2.39.3
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