85 lines
2.9 KiB
Bash
Executable File
85 lines
2.9 KiB
Bash
Executable File
#!/bin/bash
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# Check if logical-resolve is resolving the paths correctly for different
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# subvolume tree scenarios. This used to fail when a child subvolume was
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# mounted without the parent subvolume being accessible.
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source "$TEST_TOP/common" || exit
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setup_root_helper
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prepare_test_dev
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check_prereq btrfs
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check_prereq mkfs.btrfs
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check_logical_offset_filename()
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{
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local offset
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offset="$1"
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while read file; do
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if [[ "$file" = *"inode "* ]]; then
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_log "$file"
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elif [ ! -f "$file" ]; then
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_fail "path '$file' file cannot be accessed"
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else
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_log "$file"
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fi
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done < <(run_check_stdout $SUDO_HELPER "$TOP/btrfs" inspect-internal \
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logical-resolve "$offset" "$TEST_MNT")
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}
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run_check_mkfs_test_dev
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run_check_mount_test_dev
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# Create top subvolume called '@'
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run_check $SUDO_HELPER "$TOP/btrfs" subvolume create "$TEST_MNT/@"
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# Create a file in each subvolume of @, and each file will have 2 EXTENT_DATA
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# items, and also create a snapshot to have an extent being referenced by two
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# different fs trees
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run_check $SUDO_HELPER "$TOP/btrfs" subvolume create "$TEST_MNT/@/vol1"
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vol1id=$(run_check_stdout $SUDO_HELPER "$TOP/btrfs" inspect-internal rootid "$TEST_MNT/@/vol1")
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run_check $SUDO_HELPER dd if=/dev/zero bs=1M count=150 of="$TEST_MNT/@/vol1/file1"
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run_check $SUDO_HELPER "$TOP/btrfs" subvolume snapshot "$TEST_MNT/@/vol1" "$TEST_MNT/@/snap1"
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run_check $SUDO_HELPER "$TOP/btrfs" subvolume create "$TEST_MNT/@/vol1/subvol1"
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subvol1id=$(run_check_stdout $SUDO_HELPER "$TOP/btrfs" inspect-internal rootid "$TEST_MNT/@/vol1/subvol1")
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run_check $SUDO_HELPER dd if=/dev/zero bs=1M count=150 of="$TEST_MNT/@/vol1/subvol1/file2"
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run_check $SUDO_HELPER "$TOP/btrfs" subvolume snapshot "$TEST_MNT/@/vol1/subvol1" \
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"$TEST_MNT/@/vol1/snapshot1"
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run_check "$TOP/btrfs" filesystem sync "$TEST_MNT"
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run_check_umount_test_dev
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run_check $SUDO_HELPER mount -o subvol=/@/vol1 "$TEST_DEV" "$TEST_MNT"
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# Create a bind mount to vol1. logical-resolve should avoid bind mounts,
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# otherwise the test will fail
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run_check $SUDO_HELPER mkdir -p "$TEST_MNT/dir"
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run_check mkdir -p mnt2
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run_check $SUDO_HELPER mount --bind "$TEST_MNT/dir" mnt2
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# Create another bind mount to confuse logical-resolve even more.
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# logical-resolve can return the original mount or mnt3, both are valid
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run_check mkdir -p mnt3
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run_check $SUDO_HELPER mount --bind "$TEST_MNT" mnt3
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for offset in $("$TOP/btrfs" inspect-internal dump-tree -t "$vol1id" "$TEST_DEV" |
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awk '/disk byte/ { print $5 }'); do
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check_logical_offset_filename "$offset"
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done
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run_check_umount_test_dev mnt3
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run_check rmdir -- mnt3
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run_check_umount_test_dev mnt2
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run_check rmdir -- mnt2
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run_check_umount_test_dev
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run_check $SUDO_HELPER mount -o subvol="/@/vol1/subvol1" "$TEST_DEV" "$TEST_MNT"
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for offset in $("$TOP/btrfs" inspect-internal dump-tree -t "$subvol1id" "$TEST_DEV" |
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awk '/disk byte/ { print $5 }'); do
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check_logical_offset_filename "$offset"
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done
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run_check_umount_test_dev
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