[PATCH 2/2] btrfs-progs: misc-tests: add test case for receive --clone-fallback
From: Qu Wenruo <hidden>
Date: 2021-09-30 00:01:06
Subsystem:
the rest · Maintainer:
Linus Torvalds
The new test case will create two send streams: - parent_stream A full send stream. Contains one file, as clone source. - clone_stream An incremental send stream. Contains one clone operation. Then we will receive the parent_stream with default mount options, while try to receive the clone_stream with nodatasum mount option. This should result clone failure due to nodatasum flag mismatch. Then check if the receive can continue with --clone-fallback option. Signed-off-by: Qu Wenruo <redacted> --- .../049-receive-clone-fallback/test.sh | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100755 tests/misc-tests/049-receive-clone-fallback/test.sh
diff --git a/tests/misc-tests/049-receive-clone-fallback/test.sh b/tests/misc-tests/049-receive-clone-fallback/test.sh
new file mode 100755
index 000000000000..d383c0e08a68
--- /dev/null
+++ b/tests/misc-tests/049-receive-clone-fallback/test.sh@@ -0,0 +1,60 @@ +#!/bin/bash +# Verify that btrfs receive can fallback to buffered copy when clone +# failed + +source "$TEST_TOP/common" + +check_prereq mkfs.btrfs +check_prereq btrfs +setup_root_helper +prepare_test_dev + +tmp=$(mktemp -d --tmpdir btrfs-progs-send-stream.XXXXXX) + +# Create two send stream, one as the parent and the other as an incremental +# stream with one clone operation. +run_check_mkfs_test_dev +run_check_mount_test_dev -o datacow,datasum +run_check $SUDO_HELPER "$TOP/btrfs" subvolume create "$TEST_MNT/subv" +run_check $SUDO_HELPER dd if=/dev/zero bs=1M count=1 of="$TEST_MNT/subv/file1" +run_check $SUDO_HELPER "$TOP/btrfs" subvolume snapshot -r "$TEST_MNT/subv" \ + "$TEST_MNT/snap1" +run_check $SUDO_HELPER cp --reflink=always "$TEST_MNT/subv/file1" \ + "$TEST_MNT/subv/file2" +run_check $SUDO_HELPER "$TOP/btrfs" subvolume snapshot -r "$TEST_MNT/subv" \ + "$TEST_MNT/snap2" + +run_check $SUDO_HELPER "$TOP/btrfs" send -f "$tmp/parent_stream" \ + "$TEST_MNT/snap1" +run_check $SUDO_HELPER "$TOP/btrfs" send -f "$tmp/clone_stream" \ + -p "$TEST_MNT/snap1" "$TEST_MNT/snap2" + +run_check_umount_test_dev +run_check_mkfs_test_dev + +# Now we have the needed stream, try to receive them with different mount +# options +run_check_mount_test_dev -o datacow -o datasum + +# Receiving the full stream should not fail +run_check $SUDO_HELPER "$TOP/btrfs" receive -f "$tmp/parent_stream" "$TEST_MNT" + +# No remount helper, so here we manually unmoutn and re-mount with different +# nodatasum option +run_check_umount_test_dev +run_check_mount_test_dev -o datacow,nodatasum + +# Receiving incremental send stream without --clone-fallback should fail. +# As the clone source and destination have different NODATASUM flags +run_mustfail "receiving clone with different NODATASUM should fail" \ + $SUDO_HELPER "$TOP/btrfs" receive -f "$tmp/clone_stream" "$TEST_MNT" + +# Firstly we need to cleanup the partially received subvolume +run_check $SUDO_HELPER "$TOP/btrfs" subvolume delete "$TEST_MNT/snap2" + +# With --clone-fallback specified, the receive should finish without problem +run_check $SUDO_HELPER "$TOP/btrfs" receive --clone-fallback \ + -f "$tmp/clone_stream" "$TEST_MNT" +run_check_umount_test_dev + +rm -rf -- "$tmp"
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2.33.0