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From: Daan Hoogland <daan.hoogland@gmail.com>
Date: Wed, 16 Sep 2015 10:23:59 +0200
Message-ID: 
 <CAGQtxvbXtb0HcL4mMMOPZzCUWzfeiz5ix6tZjpkkCmFRqiP5vw@mail.gmail.com>
Subject: Re: [DISCUSS][PROPOSAL]missing power state reports from hypervisors
 on VMs ([BLOCKER]?)
To: dev <dev@cloudstack.apache.org>
Cc: "users@cloudstack.apache.org" <users@cloudstack.apache.org>
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On Wed, Sep 16, 2015 at 10:17 AM, Anshul Gangwar <anshul.gangwar@citrix.com=
>
wrote:

> Currently we report only PowerOn VMs and do not report PowerOff VMs that'=
s
> why we consider Missing and PowerOff as same

=E2=80=8BThis is not the behavior reported in the ticket. It is intermitten=
d.=E2=80=8B


> And that's how most of the code is written for VM sync and each Hyperviso=
r
> resource has same understanding. This will effect HA and many more unknow=
n
> places. So please do not even consider to merge this change.
>
=E2=80=8Bsure, I will hold. We do need to not regard a missing report the s=
ame as
power off however.
=E2=80=8B


> So Now coming to bug we can fix that by changing global setting
> pingInterval to appropriate value according to hypervisor settings which
> takes care of these transitional period of missing report here or can be
> handled by introducing gracePeriod global setting.
>
=E2=80=8BI can see what you are talking about but not what you are saying h=
ere. Do
you mean that we need to keep track of ping interval and grace period in
the statemachine for a particular VM?=E2=80=8B


>
> Regards,
> Anshul
>
> On 16-Sep-2015, at 1:11 PM, Rohit Yadav <rohit.yadav@shapeblue.com<mailto=
:
> rohit.yadav@shapeblue.com>> wrote:
>
>
> On 16-Sep-2015, at 1:06 pm, Daan Hoogland <daan.hoogland@gmail.com<mailto=
:
> daan.hoogland@gmail.com>> wrote:
>
>
> so two questions:
> - is this a blocker?
>
> A missing state handler is definitely a corner case, and IMO a blocker
> (so, for both 4.6.0 and future 4.5.3).
>
> - is the ignoring after logging the appropriate way to handle this?
>
> It may be undesirable for all cases; so either introducing another global
> setting to control logic (just log, vs update state in the db vs do any
> operation?); or simply find out if the VM is actually running (or any oth=
er
> state) just mark it as running in the DB.
>
> Regards,
> Rohit Yadav
> Software Architect, ShapeBlue
>
>
>
>
> M. +91 88 262 30892 | rohit.yadav@shapeblue.com<mailto:
> rohit.yadav@shapeblue.com>
> Blog: bhaisaab.org<http://bhaisaab.org/> | Twitter: @_bhaisaab
>
>
>
>
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--=20
Daan

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