Raspberry Pi 3B+ losing connection to mounted samba share and crashing

Troubleshooting
1

Creating a bug report/issue

I have searched the existing open and closed issues

I have a RPi400 and an RPi3B+, both running the latest (updated) DietPi. Both were running on SD cards, but I switched the RPi3B+ to run from an SSD after thinking these issues were caused by a corrupted SD card but the issues continue so here I am.

The RPi400 has an external btrfs drive shared via samba, drive permissions are 777 and the samba share includes 0777 masks so permissions should not be an issue (and historically haven’t been). The RPi3B+ shares the SSD in a similar way, but now only a specific folder and not the whole drive as it’s now the boot drive, the RPi400 has no problems with this share being mounted.

For some reason I think the RPi3B+ is losing connection to the RPi400’s samba share, which causes all sorts of errors and makes the RPi3B+ crash. I then have to pull the plug, it reboots fine but quickly crashes again. It has Docker containers that rely on the mounted drive, and I assume it crashes as soon as the containers try to use the mounted drive.

Here’s a pic of the errors, I can’t access any logs due to the errors. :frowning:

image
image1487×1487 538 KB

NB: 192.168.1.243 is the RPi400.

2

Both pis are connected via wifi.

Gemini suggested disabling caching in the fstab mount and turning off the wifi power saving mode. I’ve tried these now (had to rebuild everything in order to do so) and will see how it goes, but posted for others to see and in case someone can debug without access to logs.