1.\" 2.\" CDDL HEADER START 3.\" 4.\" The contents of this file are subject to the terms of the 5.\" Common Development and Distribution License (the "License"). 6.\" You may not use this file except in compliance with the License. 7.\" 8.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9.\" or http://www.opensolaris.org/os/licensing. 10.\" See the License for the specific language governing permissions 11.\" and limitations under the License. 12.\" 13.\" When distributing Covered Code, include this CDDL HEADER in each 14.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15.\" If applicable, add the following below this CDDL HEADER, with the 16.\" fields enclosed by brackets "[]" replaced with your own identifying 17.\" information: Portions Copyright [yyyy] [name of copyright owner] 18.\" 19.\" CDDL HEADER END 20.\" 21.\" 22.\" Copyright (c) 2023, Klara Inc. 23.\" 24.Dd February 14, 2024 25.Dt ZPOOL-PREFETCH 8 26.Os 27. 28.Sh NAME 29.Nm zpool-prefetch 30.Nd Loads specific types of data for the given pool 31.Sh SYNOPSIS 32.Nm zpool 33.Cm prefetch 34.Fl t Ar type 35.Ar pool 36.Sh DESCRIPTION 37.Bl -tag -width Ds 38.It Xo 39.Nm zpool 40.Cm prefetch 41.Fl t Li ddt 42.Ar pool 43.Xc 44Prefetch data of a specific type for the given pool; specifically the DDT, 45which will improve write I/O performance when the DDT is resident in the ARC. 46.El 47