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Re: [Qemu-devel] QMP unix socket randomly returning -EAGAIN
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From: |
Luiz Capitulino |
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Subject: |
Re: [Qemu-devel] QMP unix socket randomly returning -EAGAIN |
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Date: |
Mon, 15 Dec 2014 09:00:06 -0500 |
On Fri, 12 Dec 2014 16:54:39 +0100
Mohammed Gamal <address@hidden> wrote:
> Hi,
>
> We are experiencing random errors with communication with VMs with QMP via
> unix sockets. At some moment of time the QMP socket keeps on returning
> -EAGAIN and never recovering from this state unless the qemu process is
> stopped then started. This socket hickup happens specfically when
> connecting to the socket or receiving a response from it.
>
> I suspected that this might be caused by the guest hanging on some IO or
> being unresponsive for any reason, but the VMs in question were not
> unresponsive at these times and could be accessed via VNC or SSH normally.
> I've seen this on machines runnnig qemu 1.0,1 1.2.0 and 2.0.0
>
> I am suspecting it might be a bug in the monitor code, but I couldn't reach
> anything tangible. Any ideas what might be causing this?
No. Can you provide a reproducer?