Need help on a remote firewall

[dcol]

I was doing updates on all my remote OPNsense firewall when one of them would not update so I started investigating.
I tried to do it via SSH and get Input/output error. Shell not working with same error.
Reboot doesn't work
When I try update from WebGUI I get
Checking integrity...Child process pid=30552 terminated abnormally: Bus error

Funny thing is, firewall is working. I just can't do anything.
Using ZFS, but can't run scrub from cron.

All services are running. This is a vanilla install with no additional features.
If I try a reboot via console I get
/usr/local/etc/rc.reboot: /sbin/shutdown: Input/output error

Any suggestions? This firewall is 300 miles away. I really do not want to make a trip there.

[Patrick M. Hausen]

Prepare a replacement unit and send it in the mail while this one still works from RAM. i/o error means broken disk/ssd.

[dcol]

Ugh.. Thanks for quick response. That is what I was afraid of.
I will see if someone there can swap units. At least the backup XML downloaded.

[dcol]

pmhausen, you were right.
Just got back the old firewall and the disk has write issues. I reinstalled OPNsense with the latest version and it is working fine. I replaced the SSD and tested the old one. It has no read errors but cannot write.

[MoonbeamFrame]

SSD's have a write life.

I've seen disks from a number of manufactures reach this point after which the disk only operates in read only mode.