External storage device mount problem

[OMTester]

Hi,
I mounted an external storage to the phone with an external SD adapter, it work well except the fact that generally after some days it seem the mount became compromised.
If I do an "ls" to the target directory where is the mount, I get this error:
ls: reading directory '.': Input/output error
to solve the problem I must stop and restart linuxdeploy image
When I do "mount" I get a path like this for the external adapter, after restart, it change the final numbers:
/dev/block/vold/public:8:65 .....

the phone is allways linked to the power and the adapter is allways linked to the phone
thanks for help

[OMTester]

I would also appreciate if there is a command to do just the remount of the linuxdeploy external devices whitout restart the all image
thankyou

[BlackCatDevel0per]

Try this