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xen-users
Re: [Xen-users] AoE server & client on same physical xen box?
On Tue, 22 Jan 2008, rabbtux rabbtux wrote:
Thanks for all the replies! This is a known issue. Correct me if I
am wrong, but I should be able to have a fully virtualized(HVM) DomU
act as the AoE server and then the clients can be either Dom0 or other
DomUs. This will work without code modification since the problem is
in the vbladed code, right??
The problem is in the XEN virtual NICs not padding ethernet packets to the
minimum required size (60 bytes) for ethernet packets. The work around is
to either change the check in the vblade server, or force the AOE
requester to pad its requests (either remove the 60 byte check, or pad the
packets to pass the check, same effect :)
From a performance perspective it would seem rather strange to use an HVM
domain to host the AOE storage service... (too much virtualization).
According to Marcello's bug report, what you describe is the _only_ way it
would work without making the trivial change...
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1140
"The results shows that only FullVirtualization do padding, and only when
receives a packet (not when send it)."
-Tom
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