keeping three XFS formatted USB3 passport drives synced in near-real-time?

[ltgcc]

tl;dr: in title

I have a three node proxmox cluster in physically separate locations within the company. They are on internal redundant networks 1G branches, 10G and 100G backbones.

Unfortunately, I did not completely do all of my homework before migrating physboxes to proxmox VMs (and LXCs when it was doable without too much pain). One of the applications is an in-house video system (cams and other). Unfortunately, the SOP is to write the data, the streams, archiving and whatever else to a passport drive that is formatted XFS. The end. Full stop. So it'll work (and does work) on one PVE node (call it PVE1) but as currently set up, there is no redundancy. I have identical passports formatted XFS plugged into PVE2 and PVE3, and the application is installed and seems to work as expected as a solo app on PVE2 and PVE3.

the app can 'keep going' if less than about 4-5 min of data 'interruption', so if I can figure out how to keep all three passport drives 'continuously' synced then I might be able to solve the redundancy issue.

Does proxmox have sometihng that can do this built in or easily available? It's probably perfectly obvious...

syncthing https://syncthing.net/ looks promising but before I went too far down a rabbit hole I wanted to see if proxmox has sometihng that can do this built in or easily available. Or I'm missing some approach that is amazingly obvious.

Thanks in advance

 

[Tmanok]

PVE can replicate VMs between local storages of cluster nodes. PVE1 can replicate VM 1's config and disk every 1min to x hours from PVE 1's XFS storage to PVE 2's XFS storage. That way if PVE1 fails, PVE2 will restart VM1 as if it was an accidental reboot. Downtime is as slow as your XFS is for the startup of the VM.

But I'm not sure if you want the data synchronized for any other reason.
Cheers,

Tmanok

 

[Neobin]

PVE can replicate VMs between local storages of cluster nodes. PVE1 can replicate VM 1's config and disk every 1min to x hours from PVE 1's XFS storage to PVE 2's XFS storage. That way if PVE1 fails, PVE2 will restart VM1 as if it was an accidental reboot. Downtime is as slow as your XFS is for the startup of the VM.

But I'm not sure if you want the data synchronized for any other reason.
Cheers,

Tmanok

Do you confuse XFS with ZFS?:
https://pve.proxmox.com/wiki/Storage_Replication#_supported_storage_types

Or am I more confused as usual?

 

[Tmanok]

Do you confuse XFS with ZFS?:
https://pve.proxmox.com/wiki/Storage_Replication#_supported_storage_types

Or am I more confused as usual?

OP said they have XFS. But yes, you're right I forgot that PVE replicates block storages only. Drat, you were right Neobin!


Tmanok