From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Goryachev Subject: Re: Questions Date: Sun, 14 Feb 2016 17:34:51 +1100 Message-ID: <56C0200B.8030606@websitemanagers.com.au> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: o1bigtenor , Linux-RAID List-Id: linux-raid.ids On 14/02/2016 15:28, o1bigtenor wrote: > Greetings > > My raid 10 array was the subject of a number of exchanges on this > board a few months ago. > With the generous assistance of members here things were reestablished > and have been working well. Today I had a VirtualBox VM crater and in > the process cause other system issues. In process to clear the mess a > number of hard stops (shutting the system off using the button on the > case) were used. In rebooting I found that one of the drives in the > array is no longer responding issuing a number of clicks in the boot > up process with nothing else happening. Even though it is a RAID 10 > array the array is no longer mounted nor available. I have removed the > faulty drive already. I have an appropriately sized drive available > that I could place into the machine. > > 1. should I reformat the drive (to be placed into the machine)? > 2. what sequence of commands should I be using for this new drive to > be included into the array? > 3. what sequence of commands should I use to remount the array? First thing I would suggest is to let everyone know the status of the current array, and how to get it working. Can you send the output of cat /proc/mdstat and mdadm --misc --detail /dev/md? Assuming the existing array is in a "normal" status, albeit degraded, then it should be pretty simple to just partition the new drive to match the other members, and then simply add the new partition to the array (mdadm --manage /dev/md? --add /dev/sdxy) Try to take things slowly, as doing the wrong thing might make a simple recovery into a very sad event (loss of all the data). Regards, Adam Regards, Adam