Sorry forgot to mention, the ceph version is Luminous v12.2.13
On Thu, Dec 17, 2020 at 9:45 AM Alex Taylor <alexu4993@xxxxxxxxx> wrote:
>
> Hi Cephers,
>
> I'm using VSCode remote development with a docker server. It worked OK
> but fails to start the debugger after /root mounted by ceph-fuse. The
> log shows that the binary passes access X_OK check but cannot be
> actually executed. see:
>
> ```
> strace_log: access("/root/.vscode-server/extensions/ms-vscode.cpptools-1.1.3/debugAdapters/OpenDebugAD7",
> X_OK) = 0
>
> root@develop:~# ls -alh
> .vscode-server/extensions/ms-vscode.cpptools-1.1.3/debugAdapters/OpenDebugAD7
> -rw-r--r-- 1 root root 978 Dec 10 13:06
> .vscode-server/extensions/ms-vscode.cpptools-1.1.3/debugAdapters/OpenDebugAD7
> ```
>
> I also test the access syscall on ext4, xfs and even cephfs kernel
> client, all of them return -EACCES, which is expected (the extension
> will then explicitly call chmod +x).
>
> After some digging in the code, I found it is probably caused by
> https://github.com/ceph/ceph/blob/master/src/client/Client.cc#L5549-L5550.
> So here come two questions:
> 1. Is this a bug or is there any concern I missed?
> 2. It works again with fuse_default_permissions=true, any drawbacks if
> this option is set?
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