How to mount an ext4 disk for multiple users?

Question

linux

Hello, there was a problem - I mounted an ext4 disk via fstab to the home directories of each user with default settings like this:

UUID=diskuid /home/user1/folder ext4 defaults        0       2
UUID=diskuid /home/user2/folder ext4 defaults        0       2

The problem is that when you overwrite a file under one user, the rights to the file are closed for another user. How to mount a disk so that the rights to the file do not change. Now I have to recursively apply chmod 777. It's just that I don't fully understand all these mount options. The location in media or in mnt would also be avoided. All this on one machine and on one system.
Thank you.

Answer 1

1. Add mask to mount options

UUID=diskuid /home/user1/folder ext4  umask=0002     0       2
UUID=diskuid /home/user2/folder ext4  umask=0002     0       2

Thus, the rights of the user and the group will be the same - 775 for directories and 664 for files.
2. Create a group and put both users there
3. Give this group rights to the directory
chown :newgroup /home/user1/folder -R