From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Ing. Jair" Subject: mdadm message (auto-read-only) on "/dev/md1" = swap file system Date: Wed, 10 Jun 2009 12:10:43 -0500 Message-ID: <2b91784d0906101010l409c38d2m8d0e7401c454307f@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Dear Linux -raid community masters, I have a quick question regarding something i noticed on my first time mdadm linux raid configuration server: Current System: Debian Lenny 5.0 Two 250GB hard drives identical brand, size, model, speed, etc... they are the same. 3GB memory ram 1 AMD athlon 2500 CPU Here I am pasting an example of another machine I configure with the same result notice the "(auto-read-only)" message on the swap file system: md2 : active raid1 hde3[0] hdg3[1] 153557184 blocks [2/2] [UU] md1 : active (auto-read-only) raid1 hde2[0] hdg2[1] 2634560 blocks [2/2] [UU] md0 : active raid1 hde1[0] hdg1[1] 96320 blocks [2/2] [UU] unused devices: My question for this is: 1. Is this the way suppose to work on the device md1 = swap filesystem raid? 2. If this is normal where can I find documentation about the different "messages" displayed on the command "cat /proc/mdstat"? 3. If this is a bug, is there a work around and what will happen if this continue to appear? 4. I ran the command mdadm -w /dev/md1 and the message disappear, but after rebooting the system came back up. I appreciate any information or document, links, ideas you can provide to me. I look forward to your response. Sincerely, -- Jairzhino Bolivar (Jair) GNU/Linux & Unix Administrator Mobile: (312)404-6530 Fax: (214)602-4405