[6.9.2] smbd keeps file open, resulting in "Device or resource busy"

[Howboys]

I've had this issue for a while now. Basically, I have a single share mounted on my server with smb. After a large enough copy (and sporadically, not always), if I try to mutate the file (move, delete etc), I get "Device or resource busy". Today, I was able to find out what on the unraid box is keeping the file busy:

 

lsof $FILENAME
COMMAND   PID  USER   FD   TYPE DEVICE   SIZE/OFF               NODE NAME
smbd    25896 howbowz  443w   REG   0,45 7039913529 648799827760513201 $FILENAME

 

To be clear, I ran the above in unraid's terminal.

 

So now my questions:

 

• What's going on here with smbd keeping the file open for a long, long time?
• How do I prevent it?

[Squid]

Never seen that issue.  Try disabling Indexing with Windows

[Howboys]

No windows. My other system that copied the file to the share is Ubuntu.

 

Basically, 1 outlet of 20 or so files copied to the share end up like this.

[Howboys]

Anyone got ideas? Still running into it every once in a while.

[Howboys]

Here's the latest one that I've been unable to modify (this time due to shfs?):

 

COMMAND   PID USER   FD   TYPE DEVICE   SIZE/OFF       NODE NAME
shfs    12255 root  188r   REG    9,4 4069601929 6442498010 file.mkv