I'm starting to lean towards this being an I/O issue but I haven't figure out what or why yet. I don't often make changes to this environment since it's running my Opnsens router.
root@proxmox-02:~# zpool status
pool: rpool
state: ONLINE
status: Some supported and requested features are not enabled on the pool.
The pool can still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(7) for details.
scan: scrub repaired 0B in 00:56:10 with 0 errors on Sun Apr 28 17:24:59 2024
config:
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
ata-ST500LM021-1KJ152_W62HRJ1A-part3 ONLINE 0 0 0
errors: No known data errors