From mboxrd@z Thu Jan 1 00:00:00 1970 From: cvb@kruemel.org Subject: Growing RAID-10 (near-2) array - which kernel =?UTF-8?Q?needed=3F?= Date: Thu, 11 Dec 2014 19:31:31 +0100 Message-ID: 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 Apologies for raising this topic again, but I can't seem to find anything googling, and man mdadm doesn't also give me a clue. Which kernel version is needed to grow a near-2 RAID 10 array? I'm currently running kernel 3.13.0 with mdadm 3.2.5. But I could also use a live CD with a newer kernel, if needed. I have replaced the 4 disks here with larger ones (2TB drives -> 4 TB drives), and this is what the array currently looks like: # mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Sat Aug 20 08:15:07 2011 Raid Level : raid10 Array Size : 3906764800 (3725.78 GiB 4000.53 GB) Used Dev Size : 1953382400 (1862.89 GiB 2000.26 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Thu Dec 11 08:31:15 2014 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : near=2 Chunk Size : 512K Name : alpha:0 (local to host alpha) UUID : 8199e640:58fc3a04:99b52fe6:80a1574d Events : 918971 Number Major Minor RaidDevice State 6 8 1 0 active sync /dev/sda1 5 8 33 1 active sync /dev/sdc1 7 8 17 2 active sync /dev/sdb1 4 8 49 3 active sync /dev/sdd1