Error: Function not implemented

[azzamsa]

Hi, 👋🏽

I get this error when importing a local repo.
I can't import any local repo, I get all similar errors.

OS: Fedora Linux 40 (Workstation Edition) x86_64
DE: GNOME 46.4
WM: Mutter (Wayland)

🦄 flatpak list | grep butler
GitButler       com.gitbutler.gitbutler 0.12.24 stable  user

🦄 flatpak run com.gitbutler.gitbutler

** (git-butler:2): WARNING **: 12:23:58.044: webkit_settings_set_enable_offline_web_application_cache is deprecated and does nothing.
2024-09-09T05:23:58.099414Z  INFO crates/gitbutler-tauri/src/main.rs:65: system git executable for fetch/push: "git"
2024-09-09T05:23:58.099500Z  INFO crates/gitbutler-tauri/src/main.rs:102: starting app version=0.12.24 name=GitButler
2024-09-09T05:23:58.297572Z  INFO list_projects: crates/gitbutler-tauri/src/projects.rs:46: close time.busy=26.5µs time.idle=18.6µs
2024-09-09T05:23:58.306438Z  INFO get_user: crates/gitbutler-tauri/src/users.rs:10: close time.busy=17.8µs time.idle=13.5µs
2024-09-09T05:23:58.417188Z  INFO get_project: crates/gitbutler-tauri/src/projects.rs:32: close time.busy=3.90ms time.idle=38.7µs id=bd979185-628e-47be-a317-4690096c30a0 no_validation=None
2024-09-09T05:23:58.421456Z ERROR set_project_active:set_project_to_window: crates/gitbutler-tauri/src/window.rs:129: error=Failed to check if lock is taken

Caused by:
    Function not implemented (os error 38) id=bd979185-628e-47be-a317-4690096c30a0 window="main"
2024-09-09T05:23:58.421476Z  INFO set_project_active:set_project_to_window: crates/gitbutler-tauri/src/window.rs:129: close time.busy=220µs time.idle=12.9µs id=bd979185-628e-47be-a317-4690096c30a0 window="main"
2024-09-09T05:23:58.421490Z ERROR set_project_active: crates/gitbutler-tauri/src/projects.rs:67: error=Error(Failed to check if lock is taken

Caused by:
    Function not implemented (os error 38)) id=bd979185-628e-47be-a317-4690096c30a0
2024-09-09T05:23:58.421501Z  INFO set_project_active: crates/gitbutler-tauri/src/projects.rs:67: close time.busy=3.39ms time.idle=8.36µs id=bd979185-628e-47be-a317-4690096c30a0
2024-09-09T05:23:58.428809Z  INFO list_projects: crates/gitbutler-tauri/src/projects.rs:46: close time.busy=45.9µs time.idle=16.9µs
2024-09-09T05:24:01.447957Z  INFO get_project: crates/gitbutler-tauri/src/projects.rs:32: close time.busy=3.32ms time.idle=21.8µs id=e6171fce-0396-469c-8371-38809c04b665 no_validation=None
2024-09-09T05:24:01.450663Z ERROR set_project_active:set_project_to_window: crates/gitbutler-tauri/src/window.rs:129: error=Failed to check if lock is taken

Caused by:
    Function not implemented (os error 38) id=e6171fce-0396-469c-8371-38809c04b665 window="main"
2024-09-09T05:24:01.450675Z  INFO set_project_active:set_project_to_window: crates/gitbutler-tauri/src/window.rs:129: close time.busy=186µs time.idle=7.23µs id=e6171fce-0396-469c-8371-38809c04b665 window="main"
2024-09-09T05:24:01.450683Z ERROR set_project_active: crates/gitbutler-tauri/src/projects.rs:67: error=Error(Failed to check if lock is taken

Caused by:
    Function not implemented (os error 38)) id=e6171fce-0396-469c-8371-38809c04b665
2024-09-09T05:24:01.450690Z  INFO set_project_active: crates/gitbutler-tauri/src/projects.rs:67: close time.busy=2.14ms time.idle=4.82µs id=e6171fce-0396-469c-8371-38809c04b665

[Byron]

Thanks for letting us know!

I think what's happening here is that GItButler tries to obtain a file-based lock that is located in the directory that is to be added. It's meant to prevent multiple windows to be opened on the same project.
Apparently, the filesystem doesn't support file-based locks, or the flatpack distribution doesn't allow it.

Could you share the type of the filesystem that the repository is stored on?

Also CC @ndom91 who is handling our linux distributions.

A possible fix could be to make the flie-based lock optional if os-error 38 is detected, possibly showing a warning that multiple windows on the same project should be avoided.

[azzamsa]

I am using btrfs

✦ 🦄 df -Th
Filesystem     Type      Size  Used Avail Use% Mounted on
/dev/dm-0      btrfs     930G  195G  732G  22% /
devtmpfs       devtmpfs  4.0M     0  4.0M   0% /dev
tmpfs          tmpfs      14G     0   14G   0% /dev/shm
efivarfs       efivarfs  128K  8.8K  115K   8% /sys/firmware/efi/efivars
tmpfs          tmpfs     5.5G  2.6M  5.5G   1% /run
/dev/dm-0      btrfs     930G  195G  732G  22% /home
tmpfs          tmpfs      14G  180K   14G   1% /tmp

[Byron]

Thanks a lot, I have created an issue from the discussion now.
Are you using Rust and cargo by any chance? If so, does cargo work on the /home partition?

[azzamsa]

Are you using Rust and cargo by any chance? If so, does cargo work on the /home partition?

Yeah, I am a Rust dev. Yes, it works well. I also use bunch of Rust CLI apps with no issue.

[Byron]

Great! This means that if cargo was used for locking files, locking should be more portable.

[Byron]

Closing in favor of #4895 .