What does VFS: Cannot open root device … or unknown-block(0,0): error -6 mean?
All other machines are auto-detected using PXE boot without kernel panic but not this one.
How to debug?
Output from the console during PXE boot of this machine:
Any ideas?
//Bjorn
This usually means the machine can’t reach MAAS to get the rootfs.
It could be either a network issue or a driver missing in the inirtd for the specific network interface.
What kind of machine is this and what is the brand/model of the network interface?
You are right!
It is a standard i40e driver. So it should just work.
A network topology glitch blocked PXE on this interface. Now I know the problem is in the infrastructure, so I started checked why it does it.
On closer examination, the glitch could be the interface:
18:00.1 Ethernet controller: Intel Corporation Ethernet Controller XXV710 for 25GbE SFP28 (rev 02)
It could be this problem: https://www.intel.com/content/www/us/en/support/articles/000006139/ethernet-products/intel-10-gigabit-ethernet-network-connection.html
But I am not sure.
I’ll try to update the NVM.
It seems there is no configuration of this network card that makes this work. I have decided to create a LXD server manually. The network card seems to have a bug regarding PXE booting, but everything else works.
I have come across this issue but it only happens when the nodes are booting UEFI/HTTP.
The nodes network boot fine when UEFI/PXE or BIOS(legacy)/PXE.
Our nodes are Wiwynn Tioga pass.
Is it possible to turn off HTTP network boot in MAAS?
I am running version 3.0.
Thanks,
Dan
No. We changed the systems to legacy bios and the systems booted.
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For the posterity, in case you are using virsh and you are hitting this issue please ensure you have enabled VirtIO as boot device as per screenshot
