---
title: "blockmapping show"
slug: "blockmapping-show"
tags: ["5.5"]
updated: 2026-10-27T23:00:54Z
published: 2026-10-27T23:00:54Z
canonical: "docs.vastdata.com/blockmapping-show"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vastdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# blockmapping show

This command displays details of a mapping of a block host to a volume. The mapping can be a read-write volume mapping that enables the block host to access the data on the volume, or a read-only snapshot volume that enables the block host to access a specific snapshot of the volume.

## Usage

```plaintext
blockmapping show --id ID
```

## Required Parameters

| `--id ID` | Specifies which block mapping to display. |
| --- | --- |

## Example

```plaintext
vcli: admin> blockmapping show --id 113
+---------------+------------------------------+
| Id            | 113                          |
| Volume id     | 119                          |
| BlockHost id  | 1                            |
| Snapshot-data | {'id': 1, 'name': 'Vol1Snap'}|
+---------------+------------------------------+
```

## Command Output

| `Id` | The mapping ID. |
| --- | --- |
| `Volume id` | The ID of the volume mapped, by the mapping, to the specified host. |
| `BlockHost id` | The ID of the block host mapped, by the mapping, to the specified volume. |
| `Snapshot-data` | For a snapshot volume mapping, this shows the name and ID of which snapshot of the volume is mapped by the mapping. |