From mboxrd@z Thu Jan 1 00:00:00 1970 From: "P. Gautschi" Subject: --no-degraded does not work Date: Fri, 07 Nov 2014 17:43:07 +0100 Message-ID: <545CF69B.6040307@gautschi.net> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7BIT Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids As far as I understand the documentation --assemble --no-degraded should not start a degraded array. However on my system (kubuntu 14.10) # mdadm --assemble --no-degraded /dev/md0 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1 mdadm: /dev/md0 has been started with 4 drives (out of 5). # mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Tue Nov 4 15:26:46 2014 Raid Level : raid5 Array Size : 599469328 (571.70 GiB 613.86 GB) Used Dev Size : 149867332 (142.92 GiB 153.46 GB) Raid Devices : 5 Total Devices : 4 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Fri Nov 7 17:22:53 2014 State : clean, degraded Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 4K Name : 0 UUID : c7465b19:c149b2d1:5b4d88ce:8c6ce432 Events : 642 Number Major Minor RaidDevice State 0 0 0 0 removed 1 8 33 1 active sync /dev/sdc1 2 8 49 2 active sync /dev/sdd1 3 8 65 3 active sync /dev/sde1 5 8 81 4 active sync /dev/sdf1 the array IS started when removing one disk, stopping it, reconnecting the disk and then assemble the array. Is this the supposed behavior? Patrick