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Re: [libvirt] [PATCH] Ensure stream is aborted when exiting console



On Mon, Aug 15, 2011 at 02:19:27PM -0400, Dave Allan wrote:
> On Mon, Aug 15, 2011 at 10:12:54AM -0700, Daniel P. Berrange wrote:
> > From: "Daniel P. Berrange" <berrange redhat com>
> > 
> > After running 'virsh console' in interactive mode, there was a
> > missing call to virStreamAbort, which meant the server kept the
> > stream resources open
> 
> The combination of this patch and the other stream related patch makes
> the problem I was seeing of garbled console following multiple console
> connect/disconnects go away, but another problem remains in this area.
> After connecting to the console in interactive virsh and
> disconnecting, I often see all subsequent commands fail:
> 
> virsh # dominfo foo
> error: failed to get domain 'foo'
> error: An error occurred, but the cause is unknown
> 
> virsh # dominfo foo
> error: failed to get domain 'foo'
> error: no call waiting for reply with prog 536903814 vers 1 serial 300
> 
> virsh # define bar.xml
> error: Failed to define domain from bar.xml
> error: no call waiting for reply with prog 536903814 vers 1 serial 301
> 
> Closing and reopening the interactive virsh session makes the problem
> go away.
> 
> Powering down the guest while the console is connected has made the
> problem 100% reproducible in the 4 or 5 tries I've given it.

Yeah this is a regression. We were accidentally sending back two
stream abort RPC packets in some scenarios (with race condition).

I've posted a patch to fix it

Daniel
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