From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail02.iobjects.de ([188.40.134.68]:52228 "EHLO mail02.iobjects.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752588AbcDZQnA (ORCPT ); Tue, 26 Apr 2016 12:43:00 -0400 Subject: Re: Question: raid1 behaviour on failure To: Henk Slager , Matthias Bodenbinder References: <57148B2E.6010904@cn.fujitsu.com> <571871FC.2010101@jp.fujitsu.com> Cc: linux-btrfs From: =?UTF-8?Q?Holger_Hoffst=c3=a4tte?= Message-ID: <571F9A92.8060602@googlemail.com> Date: Tue, 26 Apr 2016 18:42:58 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 04/26/16 18:19, Henk Slager wrote: > It looks like a JMS567 + SATA port multipliers behaind it are used in > this drivebay. The command lsusb -v could show that. So your HW > setup is like JBOD, not RAID. I hate to quote the "harmful" trope, but.. SATA Port Multipliers Considered Harmful https://www.usenix.org/system/files/fastpw13-paper7_0.pdf aka: how to make any RAID setup useless in 1 easy step. -h