> For the complete documentation index, see [llms.txt](https://docs.tonic.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tonic.ai/textual/dataset-files/managing-dataset-file-scans.md).

# Managing dataset file scans

To detect entity values, Textual scans the dataset files.

## Automatic scans

Textual automatically runs a scan when you:

* [Add files to a local files dataset](/textual/dataset-files/files-local.md)
* [Change the file selection for a cloud storage dataset](/textual/dataset-files/files-cloud-storage.md)

## Starting a scan manually

{% hint style="info" %}
**Required dataset permission:**

* **To scan all files:** Start a scan of all dataset files
* **To scan a single file:** Start a scan of a dataset file
  {% endhint %}

When you change the dataset configuration, Textual prompts you to run a new scan. 

For example, a new scan is required when you:

* [Configure added values for entity types](/textual/dataset-configure-redaction/textual-datasets-include-exclude-values.md)
* [Change the available custom entity types](/textual/dataset-configure-redaction/dataset-custom-entity-types.md)

Textual displays an overall prompt to start a new scan, as well as a warning icon next to each affected file.

<figure><img src="https://3072847115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvOPn7KQptPWmS5iKg5P0%2Fuploads%2FMr2hiTcJF2GK3jgiY971%2FDatasetFileRescanPrompts.png?alt=media&amp;token=17e1ce58-ad13-4ede-b071-082fdc165b92" alt=""><figcaption><p>Prompts to run a new scan</p></figcaption></figure>

To start a scan of all of the affected files:

1. Click the **Scan** button in the main prompt.
2. On the confirmation panel, click **Continue**.

To start scan of an individual file, click its refresh icon.

<figure><img src="https://3072847115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvOPn7KQptPWmS5iKg5P0%2Fuploads%2Fpy9T23pusMtksmrOX8IP%2FDatasetFileRescanIcon.png?alt=media&amp;token=51401328-61c3-43d9-b3b3-8e4b0a479038" alt="" width="91"><figcaption><p>Refresh icon for a dataset file</p></figcaption></figure>

## Tracking the scan status

The file list reflects the current scanning status for the file.

1. A file is initially queued for scanning.
2. When the scan starts, the status changes to scanning.
3. When Textual finishes processing a file, it marks the file as scanned.

As Textual processes each file, it updates the [dataset results](/textual/dataset-configure-redaction/textual-datasets-review-results.md).

## Pausing a scan <a href="#file-process-pause" id="file-process-pause"></a>

If needed, you can pause the scan. To pause the scan, click the pause icon.

The information in the [dataset results](/textual/dataset-configure-redaction/textual-datasets-review-results.md) only reflect the scanned files.

For a cloud storage dataset, when you [generate output](/textual/datasets-preview-output/generating-cloud-storage-output-files.md), Textual only includes files that are scanned.

## Resuming a scan on a paused file <a href="#file-start-scan" id="file-start-scan"></a>

{% hint style="info" %}
**Required dataset permission:** Start a scan of a dataset file
{% endhint %}

After you pause the scan, you can start a scan on individual files.

To start a scan on a file, click the refresh icon for the file.

<figure><img src="https://3072847115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvOPn7KQptPWmS5iKg5P0%2Fuploads%2Fpy9T23pusMtksmrOX8IP%2FDatasetFileRescanIcon.png?alt=media&amp;token=51401328-61c3-43d9-b3b3-8e4b0a479038" alt="" width="91"><figcaption><p>Refresh icon for a dataset file</p></figcaption></figure>

## Downloading logs for files that fail to process

{% hint style="info" %}
**Required dataset permission:** Start a scan of all dataset files
{% endhint %}

When Textual is unable to process a file, it displays an error for that file.

To download log files for the failed file:

1. Click the options menu for the file.
2. Click **Download Logs**.


---

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