We are currently facing the same problems with Linux Virtual Machines running Ubuntu 18.04 and 20.04, both LTS releases.
Upon examining the Event Viewer on one of the Hosts machines, there's a critical error message: Event ID: 18602 Source: Hyper-V-Worker <VM_NAME> has encountered a fatal error and a memory dump has been generated. The guest operating system reported that it failed with the following error code: 0x1E. If the problem persists, contact Product Support for the guest operating system. (Virtual machine ID XXXXXXXX- XXXX-XXXX-XXXX-XXXXXXXXXXXX) These are some fixes we have tried so far: - Install linux-azure packages and kernel; - Enable Secure boot on Guest Machine; - Scan the disk for corruption; - Try different kernels. We couldn't try other fixes like Updating the Hyper-V Server to 2019 or disabling secure boot on Host machines, the reason being that we have around 200 VMs across 8 Hosts. Current configuration: - 2 Clusters; - 4 Hosts per cluster; - All hosts are running Hyper-V 2016. Unfortunately, we are not the only ones with the issue, the bug also affects Debian and RHEL distros: https://access.redhat.com/solutions/4796261 https://docs.microsoft.com/en-us/answers/questions/530961/windows-server-2016-hyper-v-boot-error-w-virtual-s.html These ones are the same: https://docs.microsoft.com/en-us/answers/questions/52937/failure-to-boot-on-red-hat-enterprise-linux-rhel-o.html https://social.technet.microsoft.com/Forums/en-US/1da1f987-52f0-4304-84f1-2c0ab52f3586/failure-to-boot-on-red-hat-enterprise-linux-rhel-or-centos-8-using-hyperv-2016?forum=linuxintegrationservices https://social.technet.microsoft.com/Forums/en-US/3c48c962-a28d-44bb-bd80-5b7a902404d8/failure-to-boot-on-red-hat-enterprise-linux-rhel-or-centos-8-using-hyperv-2016?forum=winserverhyperv https://www.reddit.com/r/HyperV/comments/hx2cps/failure_to_boot_on_red_hat_enterprise_linux_rhel/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1918265 Title: Random boot failure with Ubuntu 20.04 / grub 2.04 and Hyper-V 2012r2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1918265/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
