* [Qemu-devel] scp during migration with vhost fails
@ 2013-02-01 10:03 Jason Wang
2013-02-03 9:22 ` Michael S. Tsirkin
0 siblings, 1 reply; 2+ messages in thread
From: Jason Wang @ 2013-02-01 10:03 UTC (permalink / raw)
To: qemu-devel; +Cc: mst
Hello all:
During testing, I find doing scp during migration with vhost fails with
warnings in guest like:
Corrupted MAC on input.
Disconnecting: Packet corrupt.
lost connection
Here's the bisect result:
Commit a01672d3968cf91208666d371784110bfde9d4f8 kvm: convert to MemoryListener
API is the last commit that works well.
With commit 04097f7c5957273c578f72b9bd603ba6b1d69e33 vhost: convert to
MemoryListener API, guest network is unusable with warning of "bad gso type"
With commit d743c382861eaa1e13f503b05aba5a382a7e7f7c vhost: fix incorrect
userspace address, guest network is available, but scp during migration may
fail.
Looks like the issue is related to memory api, any thoughts?
Thanks
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] scp during migration with vhost fails
2013-02-01 10:03 [Qemu-devel] scp during migration with vhost fails Jason Wang
@ 2013-02-03 9:22 ` Michael S. Tsirkin
0 siblings, 0 replies; 2+ messages in thread
From: Michael S. Tsirkin @ 2013-02-03 9:22 UTC (permalink / raw)
To: Jason Wang; +Cc: qemu-devel
On Fri, Feb 01, 2013 at 06:03:32PM +0800, Jason Wang wrote:
> Hello all:
>
> During testing, I find doing scp during migration with vhost fails with
> warnings in guest like:
>
> Corrupted MAC on input.
> Disconnecting: Packet corrupt.
> lost connection
>
> Here's the bisect result:
>
> Commit a01672d3968cf91208666d371784110bfde9d4f8 kvm: convert to MemoryListener
> API is the last commit that works well.
>
> With commit 04097f7c5957273c578f72b9bd603ba6b1d69e33 vhost: convert to
> MemoryListener API, guest network is unusable with warning of "bad gso type"
>
> With commit d743c382861eaa1e13f503b05aba5a382a7e7f7c vhost: fix incorrect
> userspace address, guest network is available, but scp during migration may
> fail.
>
> Looks like the issue is related to memory api, any thoughts?
>
> Thanks
Hmm this is worrying.
The problem doesn't seem to reproduce for me. One explanation would be
that the memory table is setup incorrectly, if this happens it's very
worrying.
I think a good way to debug would be by dumping the vhost tables before
and after the change, verify that they are identical.
--
MST
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2013-02-01 10:03 [Qemu-devel] scp during migration with vhost fails Jason Wang
2013-02-03 9:22 ` Michael S. Tsirkin
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