MacOS cp failed extended attributes?

What is the problem you are having with rclone?

New setup on MacOS Sequoia (15.3.1) connecting via S3 to Sia renterd using this guide after setup I was able to use rclone copy command but I receive an error on a MacFUSE mount using cp with the following message:
could not copy extended attributes to ... Operation not permitted

I found a similar post from 2023 and followed the reference to this testing build to try it and got the same error message: https://beta.rclone.org/branch/fix-macos-mount/v1.66.0-beta.7554.fd1cea900.fix-macos-mount/

Run the command 'rclone version' and share the full output of the command.

rclone v1.69.1
- os/version: darwin 15.3.1 (64 bit)
- os/kernel: 24.3.0 (arm64)
- os/type: darwin
- os/arch: arm64 (ARMv8 compatible)
- go/version: go1.24.0
- go/linking: dynamic
- go/tags: cmount

Which cloud storage system are you using? (eg Google Drive)

Sia renterd v2.0.0 using s3

The command you were trying to run (eg rclone copy /tmp remote:tmp)

cp file /path/rclone-mount

Please run 'rclone config redacted' and share the full output. If you get command not found, please make sure to update rclone.

[siaRenterd]
type = s3
provider = Other
access_key_id = XXX
secret_access_key = XXX
endpoint = http://127.0.0.1:8080
acl = private

A log from the command that you were trying to run with the -vv flag

me@mbp ~ % rclone mount siaRenterd:backup ~/siaUploads --s3-chunk-size 120MiB --fast-list --vfs-cache-mode full --daemon
2025/02/27 21:23:51 NOTICE: --fast-list does nothing on a mount
me@mbp ~ % cp ~/Canva\ Stuff/OEE.svg ~/siaUploads
cp: /Users/me/siaUploads/OEE.svg: fcopyfile failed: Operation not permitted
cp: /Users/me/Canva Stuff/OEE.svg: could not copy extended attributes to /Users/me/siaUploads/OEE.svg: Operation not permitted
me@mbp ~ % rclone copy -vv ~/Canva\ Stuff/OEE.svg siaRenterd:backup
2025/02/27 21:24:20 DEBUG : rclone: Version "v1.69.1" starting with parameters ["rclone" "copy" "-vv" "/Users/me/Canva Stuff/OEE.svg" "siaRenterd:backup"]
2025/02/27 21:24:20 DEBUG : Creating backend with remote "/Users/me/Canva Stuff/OEE.svg"
2025/02/27 21:24:20 DEBUG : Using config file from "/Users/me/.config/rclone/rclone.conf"
2025/02/27 21:24:20 DEBUG : fs cache: renaming child cache item "/Users/me/Canva Stuff/OEE.svg" to be canonical for parent "/Users/me/Canva Stuff"
2025/02/27 21:24:20 DEBUG : Creating backend with remote "siaRenterd:backup"
2025/02/27 21:24:20 DEBUG : OEE.svg: Sizes differ (src 23929 vs dst 0)
2025/02/27 21:24:20 DEBUG : OEE.svg: md5 = f52f037624584b4cac72508e6e2a60d4 OK
2025/02/27 21:24:20 INFO  : OEE.svg: Copied (replaced existing)
2025/02/27 21:24:20 INFO  :
Transferred:   	   23.368 KiB / 23.368 KiB, 100%, 0 B/s, ETA -
Transferred:            1 / 1, 100%
Elapsed time:         0.0s

2025/02/27 21:24:20 DEBUG : 7 go routines active

I can confirm your findings. Writing to rclone mount is broken in the latest macOS.

Maybe related to this issue reported to fuse-t?:

There is again problem with fuse-t and extended attributes.

Maybe rclone nfsmount would work?