# Possibility to identify large directories in backup

**URL:** https://forum.duplicati.com/t/possibility-to-identify-large-directories-in-backup/15182
**Category:** Support
**Created:** [October 21, 2022, 11:11am UTC](https://forum.duplicati.com/t/possibility-to-identify-large-directories-in-backup/15182 "2022-10-21T11:11:10Z")
**Posts on this page:** 1
**Showing post:** 4

<div class="post-metadata">

### Author: ![ts678](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/t/8491ac/32.png) [@ts678](https://forum.duplicati.com/u/ts678)
#### Post date: [October 22, 2022, 12:00am UTC](https://forum.duplicati.com/t/possibility-to-identify-large-directories-in-backup/15182/4 "2022-10-22T00:00:19Z")

</div>

Welcome to the forum @smo

> [@smo](#):
>
> This takes times each time I’m testing the recovery.

For better but slower test, use [no-local-blocks](https://duplicati.readthedocs.io/en/latest/06-advanced-options/#no-local-blocks), otherwise it gets most blocks from source, not backup.

> Duplicati will attempt to use data from source files to minimize the amount of downloaded data. Use this option to skip this optimization and only use remote data.

> [@smo](#):
>
> But I took a quick look at my local database and couldn’t find such information.

If you’re really willing to read database, [Database rebuild](https://forum.duplicati.com/t/database-rebuild/13884/7) has info on the tables. Source files sizes are in Blockset table. Fitting the wish, File table is now a view with PathPrefix storing the unique folder prefixes.

but there’s a simpler way to know file sizes. Just [list](https://duplicati.readthedocs.io/en/latest/04-using-duplicati-from-the-command-line/#the-find-command) the files. See [Visualize backup data usage](https://forum.duplicati.com/t/visualize-backup-data-usage/6691) for more.

> [@smo](#):
>
> But do these filters all work or have I made mistakes?

[The TEST-FILTERS command](https://duplicati.readthedocs.io/en/latest/04-using-duplicati-from-the-command-line/#the-test-filters-command) can help test, and (contrary to documentation) appears to accept multiple folders. You could also pair that up with `stat --format="%s"` or something else that can show the sizes.

---

_[View the full topic](https://forum.duplicati.com/t/possibility-to-identify-large-directories-in-backup/15182)._