From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id E611913933E for ; Fri, 2 Jul 2021 15:13:13 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 6B535E0886; Fri, 2 Jul 2021 15:13:07 +0000 (UTC) Received: from gw1.antarean.org (gw1.antarean.org [194.145.200.214]) by pigeon.gentoo.org (Postfix) with ESMTP id CD81CE086E for ; Fri, 2 Jul 2021 15:13:06 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by gw1.antarean.org (Postfix) with ESMTP id 4GGdqf18q1zygF for ; Fri, 2 Jul 2021 17:12:46 +0200 (CEST) X-Virus-Scanned: amavisd-new at antarean.org Received: from gw1.antarean.org ([127.0.0.1]) by localhost (gw1.antarean.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PHDC7bUMxyrw for ; Fri, 2 Jul 2021 17:12:45 +0200 (CEST) Received: from mailstore1.adm.antarean.org (localhost [127.0.0.1]) by gw1.antarean.org (Postfix) with ESMTP id 4GGdqd6cl7zybg for ; Fri, 2 Jul 2021 17:12:45 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mailstore1.adm.antarean.org (Postfix) with ESMTP id 4GGdr11cBsz15 for ; Fri, 2 Jul 2021 17:13:05 +0200 (CEST) X-Virus-Scanned: amavisd-new at antarean.org Received: from mailstore1.adm.antarean.org ([127.0.0.1]) by localhost (mailstore1.adm.antarean.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mrU5zRBrnQEs for ; Fri, 2 Jul 2021 17:13:05 +0200 (CEST) Received: from iris.localnet (iris.adm.antarean.org [10.55.16.47]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mailstore1.adm.antarean.org (Postfix) with ESMTPSA id 4GGdr074zpz13 for ; Fri, 2 Jul 2021 17:13:04 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=antarean.org; s=default; t=1625238784; bh=oU1l7xirHOuuSc42jE9zcAmC1+HOBsRg/3ZgXZ2cnFM=; h=From:To:Subject:Date:In-Reply-To:References; b=Eb3zRDWydvktX6+B8mPIqfPkjeTxZ28plzYhBGlQ3aU4mHSDNioh/jkgFdjNK/NRc qf9RL8jkntDLqJlEQyK/L2/CaTj+IrMh6NLDtUrqEnvH8MYBvIah1jCsjwkTzwX4ri /wRGwqjdC6LkTCXO419u4U8/dsSnLnwj+gBNMPHw= From: "J. Roeleveld" To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] [OT] Using an odd number of drives in ZFS RaidZ Date: Fri, 02 Jul 2021 17:13:04 +0200 Message-ID: <4686541.31r3eYUQgx@iris> In-Reply-To: <7622209.dfAi7KttbR@robert-notebook> References: <7622209.dfAi7KttbR@robert-notebook> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Archives-Salt: b0a8cca3-9951-41f4-8c5f-f3625316c63b X-Archives-Hash: 2a630052064dbfa9461b80a93e0820bd On Thursday, July 1, 2021 3:47:08 PM CEST Robert David wrote: > In any of my data arrays I have long time migrated off the RAIDZ to the > MIRROR or RAID10. You will find finally that the RAIDZ is slow and not > very flexible. Only think you gain is the extra space in constrained > array spaces. For RAID10 it is much easier to raise the size, just > resilvering to new bigger disks, removing old and expanding. The > resilvering speed is magnitude faster. And anyway much easier to recover > in cases of failure. multiple RAIDZ2 vdevs with a fast enough I/O can easily saturate multiple 10Gbit links. I actually have 2 pools in my system, one is using tripple- mirrored VDEVs, the other 6-disk RAIDZ2 sets. Both are easily capable of saturating the 10gbit link I use. -- Joost