'local', 'local-lvm', and USB SDD not seen

[smibrandon+proxmox]

I've been running my setup for about 30 days. Main SSD running the OS and SSD-2TB, a USB SSD disk housing data for the VM's and CT's. Suddenly, prox isn't seeing local, local-lvm and SSD-2TB(see below). Any thoughts? Thanks in advance!

Note: THD-1-A and THD-1-B are backup drives [USB], and won't mount either. But in my troubleshooting, I've unplugged them

 

[smibrandon+proxmox]

update: I got them to mount temporarily.
I ran dmesg -w, and now I'm seeing this over and over:
Buffer I/O error on dev dm-8, logical block 4247, lost sync page write