Yehor πΊπ¦So I moved all LXCs to another #Proxmox node. The problematic driveβs usage has returned to normal, but another node where containers were moved is still fine.
Looks like the issue is in a WD Green SSD on that node. It took 1429 hours to retire it.
I'm running #diskscan on it right now. Have no idea why, because I still will replace it with a spare NVMe drive I have.