How to Properly Map UID/GID in LXC Containers?

Hey everyone! I'm not completely new to LXC, but I'm having a tough time figuring out how UID and GID mapping works when it comes to my containers. I'm running a Proxmox machine with OpenMediaVault alongside it, and I've been bind-mounting some filesystem drives into the container. Previously, I had my drives formatted as NTFS, and everything was working fine. However, I recently reformatted them to EXT4 and now I'm facing access rights issues.

For instance, I created a file through SAMBA using the host's user, and it appears like this:
`-rw-rw-r-- 1 smeta users 0 Jan 17 08:02 uidguid`

But inside the LXC, the file looks like:
`-rw-rw-r-- 1 nobody nogroup 0 Jan 17 03:02 uidguid`

Here are the relevant UID and GID entries:
On the host:
`smeta:x:1000:100::/home/smeta:/usr/bin/bash`
`users:x:100:smeta`

In the LXC:
`qbtuser:x:1000:1000:,,,:/home/qbtuser:/bin/bash`
`users:x:100:qbtuser`

I've tried setting up the configurations by mapping the IDs in my `101.conf` file:
`lxc.idmap u 1000 1000 1`
`lxc.idmap g 100 100 1`

And in `/etc/subuid` and `/etc/subgid`, I have:
`root:1000:1`
`root:100000:65536`
`smeta:1000:1`
`smeta:165536:65536`

But despite these changes, LXC still assigns nobody/nogroup to the files. When I shut down the LXC, all the `lxc.idmaps` disappear from the `101.conf` file. I feel like I'm missing something crucial here, but I'm not sure what it is. Any help would be greatly appreciated!