[ovirt-users] 2 hosts starting the engine at the same time?

Martin Sivak msivak at redhat.com
Mon Jul 10 15:48:00 UTC 2017


> My question was: no operating system is loaded at all before getting the
> lease, so that  don't have any risk of corruption?

That is exactly what it is supposed to do. The process dies before
starting the OS.

MArtin

On Mon, Jul 10, 2017 at 5:45 PM, Gianluca Cecchi
<gianluca.cecchi at gmail.com> wrote:
> On Mon, Jul 10, 2017 at 4:45 PM, Martin Sivak <msivak at redhat.com> wrote:
>>
>> > In the 'hosted-engine' script itself, in the function cmd_vm_start,
>> > there is a comment:
>> >     # TODO: Check first the sanlock status, and if allows:
>> >
>> > Perhaps ha-agent checks sanlock status before starting the VM?
>> > Adding Martin.
>>
>> QEMU does that by itself. It starts, asks for a lease and dies if it
>> can't get it.
>>
>> So:
>>
>> >>> I see that the qemu-kvm process for the engine starts on two hosts and
>> >>> then on one of them it gets a "kill -15" and stops
>> >>> Is it expected behaviour?
>>
>> This is how it should behave, unless the reason for it is something else.
>>
>> Martin
>>
>
> Ok.
> My question was: no operating system is loaded at all before getting the
> lease, so that  don't have any risk of corruption?
> It seems so and that only the qemu process is started...
> Thanks
> Gianluca


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