Bug#984426: Confirm Bug#984426
The last time I just fixed it via the rescue grub-install and did not made a bug report neither looked up the bug investigating for the reason. So this second time I looked up wtf could be the reason and found the missing uuid in the configuration - well I am not a guru, just a user ;-) Am 05.03.21 um 12:30 schrieb Colin Watson: On Fri, Mar 05, 2021 at 08:36:30AM +0100, Dr. Bernd Zimmermann wrote: I can confirm this bug. After apt-get upgrade from deb10u3 to deb10u4 and reboot, system boot hangs und grub must be reinstalled via rescue-system. Seems to be the SAME bug as a during the last failed upgrade a few months ago. May I ask: if you ran into this a few months ago (implying that the affected system was misconfigured at that time), how is it that you didn't fix the configuration at that point? (I'm genuinely curious about how people would run into the same class of failure twice on the same system, since once you've fixed grub-pc/install_devices you should be good for future upgrades.)
Bug#984426: Possible manual fix with install/configuration issue
See bug: #966575 It happens during auto-upgrade on systems with more than one disk (here raid1 /dev/md*) and due to inconsistent installation information in grub-pc: root@gkmonitor:~# debconf-show grub-pc | grep /install_devices: * grub-pc/install_devices: /dev/disk/by-id/ata-ST2000DM001-1ER164_Z4Z3JAP0 with: root@gkmonitor:~# ls -l /dev/disk/by-id/ insgesamt 0 lrwxrwxrwx 1 root root 9 Mär 5 09:37 ata-ST2000DM001-1ER164_Z4Z3JAP0 -> ../../sdb lrwxrwxrwx 1 root root 9 Mär 5 09:37 ata-ST2000DM001-1ER164_Z4Z3JBQN -> ../../sda lrwxrwxrwx 1 root root 9 Mär 5 09:37 md-name-gkmonitor:0 -> ../../md0 lrwxrwxrwx 1 root root 9 Mär 5 09:37 md-name-gkmonitor:1 -> ../../md1 So automatic upgrade will do grub-install into /dev/sdb and not /dev/sda. Booting from /dev/sda via BIOS will result in error. Fixing it with grub-install /dev/sda. dpkg-reconfigure grub-pc will give the option to select all disks, resulting in: root@gkmonitor:~# debconf-show grub-pc | grep /install_devices: * grub-pc/install_devices: /dev/disk/by-id/ata-ST2000DM001-1ER164_Z4Z3JBQN, /dev/disk/by-id/ata-ST2000DM001-1ER164_Z4Z3JAP0 On next upgrade, the grub-install script will hopefully upgrade all disk MBRs Regards, Bernd
Bug#984426: Confirm Bug#984426
Hey, I can confirm this bug. After apt-get upgrade from deb10u3 to deb10u4 and reboot, system boot hangs und grub must be reinstalled via rescue-system. Seems to be the SAME bug as a during the last failed upgrade a few months ago. Regards, Bernd
