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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

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[Help] Unable to write files to an SMB share on a NAS (lemmy.dbzer0.com)

submitted 6 months ago* (last edited 6 months ago) by [email protected] to c/[email protected]

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Edit: I found the solution! All I had to do was add the uid with my username, then I also had to add "forceuid" for it to actually go through. My fstab entry now looks like:

//192.168.1.21/Media-Library /mnt/Home-NAS/Media-Library cifs user=Jellyfin,password=password,uid=my_uid,forceuid,iocharset=utf8 0 0

Thank you @[email protected] for posting the solution from Stack Exchange!

Hello! I have an Ubuntu server with a NAS mounted using cifs-utils, and I've created an entry in fstab for the share to be mounted at boot.

My fstab entry looks like this:

//192.168.1.21/Media-Library /mnt/Home-NAS/Media-Library cifs user=Jellyfin,password=password,iocharset=utf8 0 0

(The password is not actually "password" of course)

However, while I'm able to access the share perfectly fine, and even have a Jellyfin server reading from it, I cannot write files to the share without using sudo. I have some applications that manage metadata for music, and they're not able to change or add files in any way.

I am however able to access the share from my Fedora machine just fine with the same credentials, since I use KDE, I just added them to the default "Windows Share Credentials" setting. I don't have the issue where I have to use sudo to modify files, so I know it's just an issue with the share mounted to the server and not permission issues on the NAS itself.

What am I doing wrong?

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[–] [email protected] 4 points 6 months ago* (last edited 6 months ago) (1 children)

Here a post with similar question and an answer from two years ago where the OP claims that using uid= did not work : https://unix.stackexchange.com/questions/687764/mount-t-cifs-only-mounts-as-root-and-no-longer-honours-uid-and-gid

From that link the comment starting with this paragraph below may work :

It occurs to me that as (a) I'm the only one accessing this share and (b) mode changes are not written back to the CIFS filesystem anyway, it doesn't matter whether the mode is 777 or 755. Therefore, the following fixes the issue:

[–] [email protected] 3 points 6 months ago

That worked! Thank you very much!