I can also confirm the reported issue. I've tried with Juju and plain MAAS to create a VM with just 2048MB and it fails in both cases. Creating, registering and commissioning the machine works, but it cannot be deployed.
System information: 18.04.2 LTS up-to-date MAAS version: 2.5.3 (7533-g65952b418-0ubuntu1~18.04.1) Kernel version: 5.1.3 (Ukuu) I don't see what information we have to provide (last comment from @paelzer)? I've added a diff of the VM configuration ($ virsh dumpxml vm), but I don't see any unexpected difference. The VM with 4096MB memory specification boots and can be deployed while the 2048MB VM cannot. ** Patch added: "Diff of virsh vm configuration" https://bugs.launchpad.net/maas/+bug/1797581/+attachment/5270761/+files/vm.diff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1797581 Title: Composing a VM in MAAS with exactly 2048 MB RAM causes the VM to kernel panic Status in MAAS: Confirmed Status in linux package in Ubuntu: Confirmed Status in qemu package in Ubuntu: Incomplete Bug description: Using latest MAAS master, I'm unable to compose a VM over the UI successfully when composed with 2048 MB of RAM. By that I mean that the VM is created, but it fails with a kernel panic. So far this only occurred in MAAS environments and often went away with e.g. the next daily images. Therefore to reproduce and finally debug/fix this issue we'd need data from anyone being affected. This list will grow as we identify more that is needed. If you are affected, please attach to the bug - the kernel used to boot the guest - the initrd used to boot the guest - libvirt guest XML used to define the guest - PXE config provided to the guest - the cloud image used to start the guest (That will likely not fit as bug attachment, consider storing it somewhere and contact us) TODO: The Maas Team will outline how to get all these artifacts. TODO: add reference to the comment outlining this (once added) To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1797581/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
