---
name: "zpool-ddtprune"
section: "8"
platform: "linux"
package: "zfsutils-linux"
version: "2.3.9-0+deb13u1"
release: "Debian 13 (Trixie)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/zpool-ddtprune"
---

# zpool-ddtprune(8)

Prunes the oldest entries from the single reference dedup table(s)

## NAME

**zpool-ddtprune** – Prunes the oldest entries from the single reference dedup table(s)

## SYNOPSIS

**zpool** **ddtprune** **-d** *days* \| **-p** *percentage* *pool*

## DESCRIPTION

This command prunes older unique entries from the dedup table. As a complement to the dedup quota feature, **ddtprune** allows removal of older non-duplicate entries to make room for newer duplicate entries.

The amount to prune can be based on a target percentage of the unique entries or based on the age (i.e., every unique entry older than N days).

## SEE ALSO

[zdb(8)](/zdb/8.md), [zpool-status(8)](/zpool-status/8.md)