On Mon, 1 May 2017 18:34:14 +0200 "jdd@xxxxxxxxx" <jdd@xxxxxxxxx> wrote: > I have built a three disks raid1 on openSUSE 42.2. so far so good, all > worked perfectly > > but later on I had no more use of the machine with as much disks, and > wanted to reclaim one disk. This one was in a esata dock. > > At the moment I didn't found a way to make this cleanly (I found it it > too late in the linux raid wiki > https://raid.wiki.kernel.org/index.php/A_guide_to_mdadm#Removing_a_disk_from_an_array) > > so, I stopped the computer and removed the dock. > > The computer rebooted perfectly, but in slightly degraded mode (see below) > > I don't find a way to tell the system that it have to forget the third > disk. May be it's not necessary. It appears you just need to do the 2nd step as listed in that wiki, mdadm --grow /dev/md127 --raid-devices=2 Did you try it? > # mdadm --detail /dev/md127 > /dev/md127: > Version : 1.0 > Creation Time : Wed Dec 21 22:43:31 2016 > Raid Level : raid1 > Array Size : 976758592 (931.51 GiB 1000.20 GB) > Used Dev Size : 976758592 (931.51 GiB 1000.20 GB) > Raid Devices : 3 > Total Devices : 2 > Persistence : Superblock is persistent > > Intent Bitmap : Internal > > Update Time : Mon May 1 15:29:48 2017 > State : clean, degraded > Active Devices : 2 > Working Devices : 2 > Failed Devices : 0 > Spare Devices : 0 > > Name : any:jdd-raid > UUID : 4d57c009:5d7fc724:07376d9a:8ecb39a2 > Events : 9592 > > Number Major Minor RaidDevice State > 0 8 1 0 active sync /dev/sda1 > 1 8 17 1 active sync /dev/sdb1 > - 0 0 2 removed > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- With respect, Roman -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
