Private bug reported: Steps to reproduce:
1. Create IMSM RAID container: mdadm --create /dev/md/imsm0 --metadata=imsm --raid-devices=3 /dev/sde /dev/sdc /dev/sdd --run 2. Create IMSM RAID volume: mdadm --create /dev/md/r0d3s128h1_A --level=0 --chunk 128 --raid-devices=3 /dev/sde /dev/sdc /dev/sdd --run --assume-clean 3. Add disk to container: mdadm --add /dev/md127 /dev/sdb 4. Invoke RAID grow: export MDADM_EXPERIMENTAL=1;mdadm --grow /dev/md127 --raid-devices=4 5. By cat /proc/mdstat we will see status of the reshape. Also systemd unit file has been created: cat /etc/systemd/system/[email protected] # This file is part of mdadm. # # mdadm is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. [Unit] Description=Manage MD Reshape on /dev/%I DefaultDependencies=no [Service] ExecStart=/sbin/mdadm --grow --continue /dev/%I #StandardInput=null #StandardOutput=null #StandardError=null KillMode=none And status of this service is: ● [email protected] - Manage MD Reshape on /dev/md127 Loaded: loaded (/etc/systemd/system/[email protected]; static; vendor preset: enabled) Active: active (running) since Fri 2018-03-23 09:20:54 CET; 23s ago Main PID: 3364 (mdadm) Tasks: 1 (limit: 37710) CGroup: /system.slice/system-mdadm\x2dgrow\x2dcontinue.slice/[email protected] └─3364 /sbin/mdadm --grow --continue /dev/md127 6. Reboot the platform. 7. During OS booting I saw print: [ 16.552076] md: reshape of RAID array md126 8. After successfully boot we can see hanging reshape process (by cat /proc/mdstat). And status of the service: systemctl status [email protected] ● [email protected] - Manage MD Reshape on /dev/md127 Loaded: loaded (/etc/systemd/system/[email protected]; static; vendor preset: enabled) Active: inactive (dead) Possible workarounds: a) systemctl restart [email protected] or b) mdadm --grow --continue /dev/md127 So the clue of the problem is in OS booting process and with correctly starting mdadm-grow-continue service. ** Affects: ubuntu Importance: Undecided Status: New ** Information type changed from Public to Private -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1758282 Title: [INTEL UBUNTU 18.04] RAID reshape hangs after OS reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1758282/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
