Public bug reported:
MAAS relies on PXE to control its nodes (be it a bare-metal host or
virtual machine); if machine is ready to get deployed (state ready),
MAAS will PXE-boot the machine/guest to distro installer. After the
installation, MAAS still PXE-boot the guest, but instructs it to sanboot
local disks.
This bug report is related to PXE-booting a qemu guest to sanboot *with NVMe
device* (I've tested the emulated one, I can try a PCI-PT too). It fails on
seaboot, but works in OVMF. There's no PXE command to boot nvme (or at least I
didn't find), but what OVMF seems to do is to fail PXE boot and fallback to
local disks, be it SCSI/Virtio-blk or NVMe, and it has the desired effect (MAAS
succeeds the deployment).
On seabios, the PXE-boot-to-local fails and the guest is stuck On older seabios
(1.10.x), for some reason a PXE boot happens to the commission kernel (a MAAS
thing) instead of getting the guest stuck.
The FW logs (and VNC screenshots) are attached - the versions I've used
are:
# cat /etc/os-release |grep -i pretty
PRETTY_NAME="Ubuntu 18.04.4 LTS"
# dpkg -l | grep "qemu-kvm\|seabios\|ovmf\|libvirt0\|ipxe-qemu " | tr -s \ |
cut -f1-3 -d \
ii ipxe-qemu 1.0.0+git-20190109.133f4c4-0ubuntu3
ii libvirt0:amd64 5.4.0-0ubuntu5.2~cloud0
ii ovmf 0~20191122.bd85bf54-2ubuntu3
ii qemu-kvm 1:4.0+dfsg-0ubuntu9.4~cloud0
ii seabios 1.13.0-1ubuntu1
(I'm using ipxe, seabios and ovmf from Focal, in order to get tests with more
updated versions).
Next steps would be to test PCI-PT NVMe boot and upstream
qemu+seabios+ipxe on Focal, to determine if the issue is present
upstream.
** Affects: seabios (Ubuntu)
Importance: Medium
Assignee: Guilherme G. Piccoli (gpiccoli)
Status: Confirmed
** Tags: seg
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https://bugs.launchpad.net/bugs/1873662
Title:
maas/pxe cannot boot with nvme device (ovmf works)
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