Hey guys,
I'm wondering how ZFS replication works as I'm not sure it works well for a storage node that runs VMs. I believe ZFS snapshot would be equivalent to an unexpected shutdown of the VM data being replicated as the OS and the hypervisor are not aware of it and in consequence does not flush any cache writes or trigger VSS in Windows for example (very important for consistent backups).
Promox also uses ZFS, so I'm wondering how different their VM replication is from Freenas ZFS replication and how does it apply to the consistency of the replicated data inside the VM?
I'm wondering how ZFS replication works as I'm not sure it works well for a storage node that runs VMs. I believe ZFS snapshot would be equivalent to an unexpected shutdown of the VM data being replicated as the OS and the hypervisor are not aware of it and in consequence does not flush any cache writes or trigger VSS in Windows for example (very important for consistent backups).
Promox also uses ZFS, so I'm wondering how different their VM replication is from Freenas ZFS replication and how does it apply to the consistency of the replicated data inside the VM?