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vmport: unknown command 13

DISCUSSION Elmar Haneke 3 participants 3 messages Aug 23, 2008 – Aug 24, 2008 KVM

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After movong from KVM-72 to KVM-73 I do get the Notice

"vmport: unknown command 13"

The Message appears on starting emulation. In an Netboot environment it does appear before booting from Network is asked.

What might go wrong here?

Elmar

#1 lore raw
Quoted 8 lines · Elmar Haneke

After movong from KVM-72 to KVM-73 I do get the Notice

"vmport: unknown command 13"

The Message appears on starting emulation. In an Netboot environment it does appear before booting from Network is asked.

What might go wrong here?

It's actually harmless; it's the Bochs BIOS trying to access the vmport function 13, which means "give me your UUID". However, upstream Qemu (and hence, KVM) doesn't support this function, so that's where the error message comes from. If I understand it correctly, upstream Qemu now has suppressed this warning message, so the next time KVM syncs up, the message will disappear.

Chris Lalancette

#2 lore raw
In reply to Elmar Haneke
Quoted 8 lines · Elmar Haneke

After movong from KVM-72 to KVM-73 I do get the Notice

"vmport: unknown command 13"

The Message appears on starting emulation. In an Netboot environment it does appear before booting from Network is asked.

What might go wrong here?

it is a bug from qemu's vmware backdoor that has been fixed already upstream, and that shouldn't be printed unless debugging that interface (not all commands had been implemented already)

it is harmless and can be ignored for now or you can just pull the patch from qemu upstream if you don't want to wait until the next merge :

http://svn.savannah.gnu.org/viewvc/trunk/hw/vmport.c?root=qemu&r1=4957&r2=5030&view=patch

Carlo