Re: [Qemu-devel] Microcheckpointing: Memory-VCPU / Disk State consistency

[Walid Nouri]

Hi Paolo,
thanks for your hint. I missed your mail from last sunday.
I will take a look on that!

Walid

> Am 17.08.2014 um 11:52 schrieb Paolo Bonzini <address@hidden>:
> 
> Il 11/08/2014 22:15, Michael R. Hines ha scritto:
>> Excellent question: QEMU does have a feature called "drive-mirror"
>> in block/mirror.c that was introduced a couple of years ago. I'm not
>> sure what the
>> adoption rate of the feature is, but I would start with that one.
> 
> block/mirror.c is asynchronous, and there's no support for communicating
> checkpoints back to the master.  However, the quorum disk driver could
> be what you need.
> 
> There's also a series on the mailing list that lets quorum read only
> from the primary, so that quorum can still do replication and fault
> tolerance, but skip fault detection.
> 
> Paolo
> 
>> There is also a second fault tolerance implementation that works a
>> little differently called
>> "COLO" - you may have seen those emails on the list too, but their
>> method does not require a disk replication solution, if I recall correctly.
>