Problem with vmnext and grub2.12

[Mathias Radtke]

Hi 
Some of our vSphere VMs are using vmnext3 network cards.
Grub2.12 is downloaded via TFTP onto the VMs. An embedded grub.cfg downloads a 
grub.cfg placed on a TFTP server.
However since Grub 2.12 this doesn't work anymore.

When executing the embeeded cfg the cursor stalls for a couple of seconds and 
returns to a grub shell.
Using debug=all I see a lot of malloc calls and:
kern/verifiers.c:212:verify:stringconfigfile (tftp,192.168.1.1)/path/grub.cfg, 
type: 2



On the server side we do not see any TFTP requests.

Switching to an E1000e or UEFI Mode fixes the issue and the embedded cfg 
succeeds in getting the requested file.
But switching to E1000e gives other issues sometimes in the OS, so staying at 
vmnext would be greatly appreciated.

Grub 2.06 works fine with vmnext3 in the same VM configuration.


Any suggestion/idea where this might come from?




Mathias Radtke
Software Developer

uib GmbH
Bonifaziusplatz 1B
55118 Mainz

E-Mail: m.radtke@uib.de <mailto:m.radtke@uib.de> 
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