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.
