From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 785CCC67839 for ; Fri, 14 Dec 2018 05:16:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 37324206BA for ; Fri, 14 Dec 2018 05:16:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37324206BA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=cox.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-btrfs-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726494AbeLNFQ5 (ORCPT ); Fri, 14 Dec 2018 00:16:57 -0500 Received: from [195.159.176.226] ([195.159.176.226]:39476 "EHLO blaine.gmane.org" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1726437AbeLNFQ5 (ORCPT ); Fri, 14 Dec 2018 00:16:57 -0500 Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1gXfoB-0007j0-Iv for linux-btrfs@vger.kernel.org; Fri, 14 Dec 2018 06:14:43 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: linux-btrfs@vger.kernel.org From: Duncan <1i5t5.duncan@cox.net> Subject: Re: SATA/SAS mixed pool Date: Fri, 14 Dec 2018 05:14:37 +0000 (UTC) Message-ID: References: <20181213072905.ac352nclowixfhpt@angband.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@blaine.gmane.org User-Agent: Pan/0.146 (Hic habitat felicitas; ba6322f87) Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Adam Borowski posted on Thu, 13 Dec 2018 08:29:05 +0100 as excerpted: > On Wed, Dec 12, 2018 at 09:31:02PM -0600, Nathan Dehnel wrote: >> Is it possible/safe to replace a SATA drive in a btrfs RAID10 pool with >> an SAS drive? > > For btrfs, a block device is a block device, it's not "racist". > You can freely mix and/or replace. If you want to, say, extend a SD > card with NBD to remote spinning rust, it works well -- tested :p FWIW (mostly for other readers not so much this particular case) the known exception/caveat to that is USB block devices, which do tend to have problems, tho some hardware is fine. -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman