We are running raspbian stretch and have our mono based application running fine however we've found that after several days (this can be 2 days it could be 7) that our PI's just hang.
Kernel: Linux raspberrypi 4.9.41-v7+ #1023 SMP Tue Aug 8 16:00:15 BST 2017 armv7l GNU/Linux
- The devices ping
- Unable to make SSH connections (it says enter login, but when you hit enter after your username it comes back with server disconnected
- We are unable to launch new processes via our UI
I've managed to get a dmesg on a device this morning which it has happened on and it shows:
mmc0: card never left busy state mmc0: error -110 whilst initialising SD Card EXT4-fs error (device mmcblk0p2): previous I/O error to duperblock detected
We are using Kingston Industrial SD Cards so I know the SD Cards are up to the task. Also, simply rebooting the devices brings them back to life
Can anyone advise further on what to look for?