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We recently enable kRBD (tick the KRBD box in storage configuration) for our running cluster. Faster IO was the main reason, We record 30% gain in reads/writes in all VM running in writeback cache mode. But then a couple of VMs disks needed to be resized. In both cases disks went to 0 bytes...

Just dropping a +1 on this one. Building on top of something familiar, like VM replication for example, but between different locations.

Oh man. Can We have an update on what happened next? It was like that "24" show where all action happens in one day. I'm afraid of upgrading now.

This guide worked for us: https://www.burgundywall.com/post/using-cloud-init-to-set-static-ips-in-ubuntu-20-04

Thanks man! I don't know how I missed that. I'm giving it a try today. If it works I should be able to create a template.

It might be because of my setup (SAN / iSCSI) but I can only use IDE on Windows VMS and BUS SCSI with "VirtIO SCSI" controller on the Linux ones. Any other combination make the disk not available during OS installation. About the VMs shutting down, I have to wait until the weekend to say if...

Hey Guys, I'm having the same issue once a week, and it only affects Windows VMs. I'll try unchecking 'discard' and changing to "write back" as a test in one of the VMs and report back.