From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Shenkin Subject: Re: Raid-6 won't boot Date: Sat, 28 Mar 2020 07:47:14 +0000 Message-ID: <1f393884-dc48-c03e-f734-f9880d9eed96@shenkin.org> References: <7ce3a1b9-7b24-4666-860a-4c4b9325f671@shenkin.org> <3868d184-5e65-02e1-618a-2afeb7a80bab@youngman.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Content-Language: en-US Sender: linux-raid-owner@vger.kernel.org To: Roger Heflin Cc: antlists , Linux-RAID List-Id: linux-raid.ids Thanks Roger. dmesg has nothing in it referring to md126 or md127.... any other thoughts on how to investigate? thanks, allie On 3/27/2020 3:55 PM, Roger Heflin wrote: > A non-assembled array always reports raid1. > > I would run "dmesg | grep md126" to start with and see what it reports it saw. > > On Fri, Mar 27, 2020 at 10:29 AM Alexander Shenkin wrote: >> >> Thanks Wol, >> >> Booting in SystemRescueCD and looking in /proc/mdstat, two arrays are >> reported. The first (md126) in reported as inactive with all 7 disks >> listed as spares. The second (md127) is reported as active >> auto-read-only with all 7 disks operational. Also, the only >> "personality" reported is Raid1. I could go ahead with your suggestion >> of mdadm --stop array and then mdadm --assemble, but I thought the >> reporting of just the Raid1 personality was a bit strange, so wanted to >> check in before doing that... >> >> Thanks, >> Allie >> >> On 3/26/2020 10:00 PM, antlists wrote: >>> On 26/03/2020 17:07, Alexander Shenkin wrote: >>>> I surely need to boot with a rescue disk of some sort, but from there, >>>> I'm not sure exactly when I should do. Any suggestions are very welcome! >>> >>> Okay. Find a liveCD that supports raid (hopefully something like >>> SystemRescueCD). Make sure it has a very recent kernel and the latest >>> mdadm. >>> >>> All being well, the resync will restart, and when it's finished your >>> system will be fine. If it doesn't restart on its own, do an "mdadm >>> --stop array", followed by an "mdadm --assemble" >>> >>> If that doesn't work, then >>> >>> https://raid.wiki.kernel.org/index.php/Linux_Raid#When_Things_Go_Wrogn >>> >>> Cheers, >>> Wol