This page shows the content of a tree. It is essentially a list of items, each of which consist of a key and a value.
The key is shown in the boxes on the left. It is a triple of a 64-bit id, an 8-bit type, and a 64-bit offset. What each of them means depends on the tree we're in. You can search for a key id by using the search field below.
The value is summarized to the right of the key. To see the value in more detail, unfold the key by clicking on it.
Finally, to the very right, we have the logical address of the metadata node which the item is stored in.
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1661,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1662,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1663,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1664,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1665,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1667,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1668,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1670,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1671,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1675,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1678,
                offset: 0,
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            },
        ],
    },
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Extent(
    ExtentItem {
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        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1679,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1680,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1681,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
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        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
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                id: 1683,
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Extent(
    ExtentItem {
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        generation: 9,
        flags: 1,
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            ExtentData {
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Extent(
    ExtentItem {
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        generation: 9,
        flags: 1,
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            ExtentData {
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            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 1689,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
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            ExtentData {
                root: 5,
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Extent(
    ExtentItem {
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        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
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                id: 1693,
                offset: 0,
                count: 1,
            },
        ],
    },
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Extent(
    ExtentItem {
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        flags: 1,
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            ExtentData {
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Extent(
    ExtentItem {
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        generation: 9,
        flags: 1,
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            ExtentData {
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BlockGroup(
    BlockGroupItem {
        used: 16384,
        chunk_objectid: 256,
        flags: 34,
    },
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Extent(
    ExtentItem {
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        generation: 11,
        flags: 2,
        block_refs: [
            Tree {
                id: 3,
            },
        ],
    },
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Extent(
    ExtentItem {
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        generation: 17,
        flags: 2,
        block_refs: [
            Tree {
                id: 1,
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        ],
    },
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BlockGroup(
    BlockGroupItem {
        used: 39305216,
        chunk_objectid: 256,
        flags: 36,
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 17,
        flags: 2,
        block_refs: [
            Tree {
                id: 4,
            },
        ],
    },
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Extent(
    ExtentItem {
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        generation: 17,
        flags: 2,
        block_refs: [
            Tree {
                id: 2,
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        ],
    },
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Extent(
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Extent(
    ExtentItem {
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        generation: 17,
        flags: 2,
        block_refs: [
            Tree {
                id: 10,
            },
        ],
    },
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Extent(
    ExtentItem {
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        flags: 2,
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                id: 2,
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        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 5,
        flags: 2,
        block_refs: [
            Tree {
                id: 18446744073709551607,
            },
        ],
    },
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Extent(
    ExtentItem {
        refs: 1,
        generation: 8,
        flags: 2,
        block_refs: [
            Tree {
                id: 7,
            },
        ],
    },
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Extent(
    ExtentItem {
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        generation: 8,
        flags: 2,
        block_refs: [
            Tree {
                id: 7,
            },
        ],
    },
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Extent(
    ExtentItem {
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        generation: 8,
        flags: 2,
        block_refs: [
            Tree {
                id: 7,
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        ],
    },
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Extent(
    ExtentItem {
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        generation: 8,
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Extent(
    ExtentItem {
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Extent(
    ExtentItem {
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        generation: 8,
        flags: 2,
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                id: 7,
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Extent(
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        generation: 8,
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Extent(
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        ],
    },
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Extent(
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Extent(
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    },
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Extent(
    ExtentItem {
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        generation: 8,
        flags: 2,
        block_refs: [
            Tree {
                id: 7,
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        ],
    },
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Extent(
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Extent(
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Extent(
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Extent(
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Extent(
    ExtentItem {
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        generation: 8,
        flags: 2,
        block_refs: [
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                id: 7,
            },
        ],
    },
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Extent(
    ExtentItem {
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        generation: 8,
        flags: 2,
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            Tree {
                id: 7,
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        ],
    },
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Extent(
    ExtentItem {
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        generation: 8,
        flags: 2,
        block_refs: [
            Tree {
                id: 7,
            },
        ],
    },
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