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From f5f8208d1e759b789da9f2ae03b2320c355dbf89 Mon Sep 17 00:00:00 2001
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From: Max Reitz <mreitz@redhat.com>
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Date: Mon, 18 Jun 2018 17:48:33 +0200
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Subject: [PATCH 11/89] iotests: Add test for rebasing with relative paths
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RH-Author: Max Reitz <mreitz@redhat.com>
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Message-id: <20180618174833.19439-3-mreitz@redhat.com>
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Patchwork-id: 80789
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O-Subject: [RHV-7.6 qemu-kvm-rhev PATCH 2/2] iotests: Add test for rebasing with relative paths
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Bugzilla: 1569835
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Message-id: 20180509182002.8044-3-mreitz@redhat.com
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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(cherry picked from commit 28036a7f7044fddb79819e3c8fcb4ae5605c60e0)
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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tests/qemu-iotests/024 | 82 ++++++++++++++++++++++++++++++++++++++++++++--
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tests/qemu-iotests/024.out | 30 +++++++++++++++++
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2 files changed, 109 insertions(+), 3 deletions(-)
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diff --git a/tests/qemu-iotests/024 b/tests/qemu-iotests/024
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index e0d77ce..4071ed6 100755
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--- a/tests/qemu-iotests/024
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+++ b/tests/qemu-iotests/024
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@@ -29,9 +29,14 @@ status=1 # failure is the default!
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_cleanup()
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{
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- _cleanup_test_img
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- rm -f "$TEST_DIR/t.$IMGFMT.base_old"
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- rm -f "$TEST_DIR/t.$IMGFMT.base_new"
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+ _cleanup_test_img
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+ rm -f "$TEST_DIR/t.$IMGFMT.base_old"
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+ rm -f "$TEST_DIR/t.$IMGFMT.base_new"
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+
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+ rm -f "$TEST_DIR/subdir/t.$IMGFMT"
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+ rm -f "$TEST_DIR/subdir/t.$IMGFMT.base_old"
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+ rm -f "$TEST_DIR/subdir/t.$IMGFMT.base_new"
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+ rmdir "$TEST_DIR/subdir" 2> /dev/null
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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@@ -123,6 +128,77 @@ io_pattern readv $((13 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
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io_pattern readv $((14 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
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io_pattern readv $((15 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
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+echo
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+echo "=== Test rebase in a subdirectory of the working directory ==="
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+echo
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+
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+# Clean up the old images beforehand so they do not interfere with
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+# this test
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+_cleanup
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+
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+mkdir "$TEST_DIR/subdir"
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+
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+# Relative to the overlay
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+BASE_OLD_OREL="t.$IMGFMT.base_old"
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+BASE_NEW_OREL="t.$IMGFMT.base_new"
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+
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+# Relative to $TEST_DIR (which is going to be our working directory)
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+OVERLAY_WREL="subdir/t.$IMGFMT"
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+
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+BASE_OLD="$TEST_DIR/subdir/$BASE_OLD_OREL"
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+BASE_NEW="$TEST_DIR/subdir/$BASE_NEW_OREL"
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+OVERLAY="$TEST_DIR/$OVERLAY_WREL"
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+
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+# Test done here:
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+#
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+# Backing (old): 11 11 -- 11
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+# Backing (new): -- 22 22 11
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+# Overlay: -- -- -- --
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+#
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+# Rebasing works, we have verified that above. Here, we just want to
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+# see that rebasing is done for the correct target backing file.
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+
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+TEST_IMG=$BASE_OLD _make_test_img 1M
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+TEST_IMG=$BASE_NEW _make_test_img 1M
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+TEST_IMG=$OVERLAY _make_test_img -b "$BASE_OLD_OREL" 1M
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+
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+echo
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+
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+$QEMU_IO "$BASE_OLD" \
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+ -c "write -P 0x11 $((0 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \
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+ -c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \
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+ | _filter_qemu_io
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+
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+$QEMU_IO "$BASE_NEW" \
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+ -c "write -P 0x22 $((1 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \
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+ -c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \
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+ | _filter_qemu_io
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+
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+echo
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+
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+pushd "$TEST_DIR" >/dev/null
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+$QEMU_IMG rebase -f "$IMGFMT" -b "$BASE_NEW_OREL" "$OVERLAY_WREL"
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+popd >/dev/null
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+
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+# Verify the backing path is correct
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+TEST_IMG=$OVERLAY _img_info | grep '^backing file'
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+
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+echo
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+
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+# Verify the data is correct
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+$QEMU_IO "$OVERLAY" \
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+ -c "read -P 0x11 $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
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+ -c "read -P 0x11 $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
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+ -c "read -P 0x00 $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
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+ -c "read -P 0x11 $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
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+ | _filter_qemu_io
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+
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+echo
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+
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+# Verify that cluster #3 is not allocated (because it is the same in
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+# $BASE_OLD and $BASE_NEW)
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+$QEMU_IMG map "$OVERLAY" | _filter_qemu_img_map
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+
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# success, all done
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echo "*** done"
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diff --git a/tests/qemu-iotests/024.out b/tests/qemu-iotests/024.out
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index 33cfaf5..024dc78 100644
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--- a/tests/qemu-iotests/024.out
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+++ b/tests/qemu-iotests/024.out
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@@ -141,4 +141,34 @@ read 65536/65536 bytes at offset 917504
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=== IO: pattern 0x00
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read 65536/65536 bytes at offset 983040
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+
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+=== Test rebase in a subdirectory of the working directory ===
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+
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+Formatting 'TEST_DIR/subdir/t.IMGFMT.base_old', fmt=IMGFMT size=1048576
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+Formatting 'TEST_DIR/subdir/t.IMGFMT.base_new', fmt=IMGFMT size=1048576
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+Formatting 'TEST_DIR/subdir/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=t.IMGFMT.base_old
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+
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+wrote 131072/131072 bytes at offset 0
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+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+wrote 65536/65536 bytes at offset 196608
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+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+wrote 131072/131072 bytes at offset 65536
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+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+wrote 65536/65536 bytes at offset 196608
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+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+
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+backing file: t.IMGFMT.base_new (actual path: TEST_DIR/subdir/t.IMGFMT.base_new)
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+
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+read 65536/65536 bytes at offset 0
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+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 65536/65536 bytes at offset 65536
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+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 65536/65536 bytes at offset 131072
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+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+read 65536/65536 bytes at offset 196608
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+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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+
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+Offset Length File
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+0 0x30000 TEST_DIR/subdir/t.IMGFMT
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+0x30000 0x10000 TEST_DIR/subdir/t.IMGFMT.base_new
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*** done
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--
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1.8.3.1
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