Solved Issue with ejecting USB drive with entware installed.

[domic]

Getting the following error in syslog when trying to eject the entware drive:

Oct  3 00:33:36 ejusb: USB partition unmounted from /tmp/mnt/entware-usb fail. (return -1, Device or resource busy)

What is the cause?
Can provide syslogs.

2. After a reboot "sh" can't find fish and other entware binaries I use.
Let me know if you have any ideas what is going on.

 

[ColinTaylor]

What is the cause?

You have one or more processes running that have files open on the USB drive. You need to terminate those processes before attempting to unmount the drive.