<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Apr 27, 2014 at 5:00 PM, <span dir="ltr"><<a href="mailto:libvirt-users-request@redhat.com" target="_blank">libvirt-users-request@redhat.com</a>></span> wrote:<br>
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Today's Topics:<br>
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1. Ability of a VM to detect Libvirt events. (Taimur Al Said)<br>
2. Re: Ability of a VM to detect Libvirt events. (Brian Rak)<br>
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Message: 1<br>
Date: Sat, 26 Apr 2014 22:46:30 +0100<br>
From: Taimur Al Said <<a href="mailto:alsaidts@gmail.com">alsaidts@gmail.com</a>><br>
To: <a href="mailto:libvirt-users@redhat.com">libvirt-users@redhat.com</a><br>
Subject: [libvirt-users] Ability of a VM to detect Libvirt events.<br>
Message-ID:<br>
<CACwu6qRADOyJ6EB_OD=<a href="mailto:YZgbogNqQLQPxOJfRXshGcqosgDmPKg@mail.gmail.com">YZgbogNqQLQPxOJfRXshGcqosgDmPKg@mail.gmail.com</a>><br>
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Hi there,<br>
<br>
Let's assume a libvirt event occurred on a VM, i.e an event like pause VM<br>
or reboot VM or any other libvirt event. Can the VM determine that such<br>
event was originated by libvirt? ---or in a more general term by the<br>
hypervisor? If yes, how can this be done in theory?<br>
<br>
Thanks in advance,<br>
<br>
Regards,<br>
Taimur<br>
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Message: 2<br>
Date: Sat, 26 Apr 2014 18:46:42 -0400<br>
From: Brian Rak <<a href="mailto:brak@gameservers.com">brak@gameservers.com</a>><br>
To: <a href="mailto:libvirt-users@redhat.com">libvirt-users@redhat.com</a><br>
Subject: Re: [libvirt-users] Ability of a VM to detect Libvirt events.<br>
Message-ID: <<a href="mailto:535C3752.5070609@gameservers.com">535C3752.5070609@gameservers.com</a>><br>
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How are you thinking that a VM would be paused/rebooted via something<br>
other then the hypervisor?<br>
<br>
On 4/26/2014 5:46 PM, Taimur Al Said wrote:<br>
> Hi there,<br>
><br>
> Let's assume a libvirt event occurred on a VM, i.e an event like pause<br>
> VM or reboot VM or any other libvirt event. Can the VM determine that<br>
> such event was originated by libvirt? ---or in a more general term by<br>
> the hypervisor? If yes, how can this be done in theory?<br>
><br>
> Thanks in advance,<br>
><br>
> Regards,<br>
> Taimur<br>
><br>
><br>
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End of libvirt-users Digest, Vol 52, Issue 39<br>
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</blockquote></div><br></div><div class="gmail_extra">Thanks,</div><div class="gmail_extra">I guess my query was clear. However, I'll make it clearer. </div><div class="gmail_extra">I know that the such events are caused by the hypervisor. Either directly or using tools such as Libvirt. The question is: can such events be detectable from the VM level? In another word, can the VM tell if it was being paused/rebooted/migrated/etc? </div>
<div class="gmail_extra"><br></div><div class="gmail_extra">Best regards,</div><div class="gmail_extra">Taimur</div><div class="gmail_extra"><br></div></div>