Testing Individual Disk Performance in ZFS

rbeard.js

Member
Aug 11, 2022
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Hi there,

We are seeing some crazy I/O delay on one proxmox node and some minor delay on another after some SSD swaps. I am assuming that one or mode disks are the culprit in my zfs pool, and I would like to swap them for fresh drives.
I plan to confirm this after hours by enabling writeback on a few vms to see if performance increases and I/O delay falls.
What would be an easy way to tell which disks in the pool arent performing up to snuff?
The nodes are both active so I was hoping to test through the proxmox console if possible

Please let me know if you need more details about our environment and thank you!