ZPOOL-DDTPRUNE(8) System Manager's Manual ZPOOL-DDTPRUNE(8)

# [NAME](#NAME)

`zpool-ddtprune` — Prunes the oldest entries from the single reference dedup table(s)

# [SYNOPSIS](#SYNOPSIS)

`zpool` `ddtprune` `-d` `days` | `-p` `percentage` `pool`

# [DESCRIPTION](#DESCRIPTION)

This command prunes older unique entries from the dedup table. As a complement to the dedup quota feature, [**ddtprune**](#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](#SEE_ALSO)

[zdb(8)](/man/os/zfs/zdb.8), [zpool-status(8)](/man/os/zfs/zpool-status.8)

June 17, 2024 OpenZFS

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Document: zpool-ddtprune(8) from zfs 2.4.4-r4 (Chainguard OS)
Source: https://github.com/openzfs/zfs