Why s3fs request this file? how to disable this?
Speculation: are you by chance combining s3fs and samba and then mounting the exported samba share on a windows machine?
No, I have not any special configuration of samba.
I am on Linux Mint 18.3 host. Just install s3fs
Your computer seems to be treating the s3fs mount as a removable disk and trying to decide what to do when it is "inserted."
So, next guess is that there is a setting that you might need to change, to disable this -- or at least prove/disprove the theory... https://unix.stackexchange.com/a/136887/24251 mentions changing such settings in a prior version of Mint. This is a bit of a surprise since autorun.inf is typically used by Windows, but it seems a likely explanation that your OS's desktop GUI is looking for this file, trying to be "helpful."
You are right. Under System settings -> Preffered applications there section: Select an appliation for software CDs. There was Autorun prompt. I change it to Do nothing.
Thank you.
Most helpful comment
Your computer seems to be treating the s3fs mount as a removable disk and trying to decide what to do when it is "inserted."
So, next guess is that there is a setting that you might need to change, to disable this -- or at least prove/disprove the theory... https://unix.stackexchange.com/a/136887/24251 mentions changing such settings in a prior version of Mint. This is a bit of a surprise since
autorun.infis typically used by Windows, but it seems a likely explanation that your OS's desktop GUI is looking for this file, trying to be "helpful."