From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail01.jit-creatives.de ([188.40.162.6]:55469 "EHLO mail01.jit-creatives.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751038AbaALVkg (ORCPT ); Sun, 12 Jan 2014 16:40:36 -0500 To: Subject: Re: RAID 1 with no data on it when accidentally switched HDD MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Date: Sun, 12 Jan 2014 22:40:34 +0100 From: Ingo Ebel Message-ID: Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi, > I don't understand the exact sequence. How does a 3rd drive appear as > sdc when > the 2nd drive is sdc and sdc1 is part of a Btrfs file system already? > Did you > reboot and the 3rd drive became sdc? This needs to be explained > better, > including the exact commands you used. Ok i try to. I made the btrfs with: mkfs.btrfs -f -m raid1 -d raid1 /dev/sdb1 /dev/sdc1 part of my /etc/fstab: /dev/sdb1 /data btrfs defaults,compress 0 0 /dev/sdb1 /usr/src/packages btrfs defaults,compress,subvol=packages 0 0 No other special commands used. Hardware Setup: SATA-Port 1 - HDD with opensuse SATA-Port 2 - HDD /dev/sdb SATA-Port 3 - DVD SATA-Port 4 - HDD /dev/sdc Put at SATA Port 3 an HDD instead an DVD and it got /dev/sdc after rebooting my system. Regards Ingo