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From b1035096f2d46e2146704d1db9581c6d2131d1f4 Mon Sep 17 00:00:00 2001
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From: Max Reitz <mreitz@redhat.com>
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Date: Mon, 13 Jul 2020 14:24:49 -0400
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Subject: [PATCH 2/4] iotests/026: Test EIO on preallocated zero cluster
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RH-Author: Max Reitz <mreitz@redhat.com>
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Message-id: <20200713142451.289703-3-mreitz@redhat.com>
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Patchwork-id: 97953
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O-Subject: [RHEL-8.3.0 qemu-kvm PATCH 2/4] iotests/026: Test EIO on preallocated zero cluster
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Bugzilla: 1807057
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RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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Test what happens when writing data to a preallocated zero cluster, but
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the data write fails.
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Message-Id: <20200225143130.111267-3-mreitz@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 31ab00f3747c00fdbb9027cea644b40dd1405480)
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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tests/qemu-iotests/026 | 21 +++++++++++++++++++++
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tests/qemu-iotests/026.out | 10 ++++++++++
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tests/qemu-iotests/026.out.nocache | 10 ++++++++++
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3 files changed, 41 insertions(+)
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diff --git a/tests/qemu-iotests/026 b/tests/qemu-iotests/026
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index 3430029ed6..d89729697f 100755
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--- a/tests/qemu-iotests/026
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+++ b/tests/qemu-iotests/026
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@@ -215,6 +215,27 @@ _make_test_img 64M
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$QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
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_check_test_img
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+echo
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+echo === Avoid freeing preallocated zero clusters on failure ===
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+echo
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+
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+cat > "$TEST_DIR/blkdebug.conf" <
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+[inject-error]
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+event = "write_aio"
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+errno = "5"
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+once = "on"
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+EOF
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+
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+_make_test_img $CLUSTER_SIZE
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+# Create a preallocated zero cluster
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+$QEMU_IO -c "write 0 $CLUSTER_SIZE" -c "write -z 0 $CLUSTER_SIZE" "$TEST_IMG" \
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+ | _filter_qemu_io
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+# Try to overwrite it (prompting an I/O error from blkdebug), thus
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+# triggering the alloc abort code
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+$QEMU_IO -c "write 0 $CLUSTER_SIZE" "$BLKDBG_TEST_IMG" | _filter_qemu_io
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+
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+_check_test_img
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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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diff --git a/tests/qemu-iotests/026.out b/tests/qemu-iotests/026.out
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index ff0817b6f2..83989996ff 100644
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--- a/tests/qemu-iotests/026.out
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+++ b/tests/qemu-iotests/026.out
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@@ -643,4 +643,14 @@ write failed: Input/output error
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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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No errors were found on the image.
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+
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+=== Avoid freeing preallocated zero clusters on failure ===
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+
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+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1024
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+wrote 1024/1024 bytes at offset 0
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+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+wrote 1024/1024 bytes at offset 0
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+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+write failed: Input/output error
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+No errors were found on the image.
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*** done
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diff --git a/tests/qemu-iotests/026.out.nocache b/tests/qemu-iotests/026.out.nocache
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index 495d013007..9359d26d7e 100644
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--- a/tests/qemu-iotests/026.out.nocache
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+++ b/tests/qemu-iotests/026.out.nocache
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@@ -651,4 +651,14 @@ write failed: Input/output error
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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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No errors were found on the image.
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+
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+=== Avoid freeing preallocated zero clusters on failure ===
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+
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+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1024
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+wrote 1024/1024 bytes at offset 0
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+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+wrote 1024/1024 bytes at offset 0
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+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+write failed: Input/output error
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+No errors were found on the image.
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*** done
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--
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2.27.0
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