Tutorial: DSM 6.x on Proxmox
After fiddling with it for a day, and getting it to work, I thought it would be nice to share the knowledge, especially since "officially" only ESXi is supported, and ESXi is picky about supporting stuff...
The main reason for me to move to a hypervisor was because Synology has not yet introduced NVMe support AT ALL. And even with a kernel driver, the Storage Manager will not see it as an SSD, as an HDD, or anything. Synology is silent about this, even though some have requested it o
It was the first reboot after starting Upgrade DSM - so my version was 6.2.2-24922 - but with not yet finished upgrade.
There were two problems:
1) boot from USB img failed - fixed by replacing ich9-usb-ehci1 to nec-usb-xhci (found examples on the proxmox wiki page),
2) next I was must remove 'scsihw: megasas' string (I have 6 SATA and 2 SCSI disks attached to this VM, so I played with different SCSI controller model in the past on first-time setup).
Solve
