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2 天前Ok so wrapping my head around this, what I think I need to be clear about is the separation between applications and data. Applications get the nightly VM snapshot way of backing up, and data will get the frequent zfs snapshots (and other backups). Kinda what I tried to do to begin with, so I will look more on how to do this separation for the applications I intend to use.
Still unsure if samba is the way to go for linking it together on the same physical machine.
Should I just run syncthing on the bare metal host…? Will sleep on it.
Right, so my aversion to live backups comes initially from Louis Rossmann’s guide on the FUTO wiki where he mentions it’s non trivial to reliably snapshot a running system. After a lot of looking elsewhere as well I haven’t gotten much hints that it would be bad advice and I want to err on the side of caution anyway. The hypervisor is QEMU/KVM so in theory it should be able to do live snapshots afaik. But I’m not familiar enough with the consistency guarantees to fully trust it. I don’t wanna wake up one day to a server crash and trying to mount the backed up qcow2 in a new system and suddenly it wouldn’t work and I just lost data.
It won’t matter though as I’ll just place all the important data on the zpool and back that up frequently as a simple data store. The VMs can keep doing their nightly shutdown and snapshot thing.