[Feature Request] Avoid trying to backup xattrs

[DianaNites]

I am attempting to backup a filesystem that does not support xattrs. This results in a WARN log line for seemingly every file about xattrs being unsupported.

[WARN] ignoring error: Error getting xattrs for "<path>": Os { code: 95, kind: Unsupported, message: "Operation not supported" }

A command-line and/or configuration option to disable attempting to read extended attributes would be very useful.

An additional option could be attempting detection of this and handling it automatically, but I suspect its possible that would mask legitimate errors from the user(maybe they misconfigured something?)

Using rustic version v0.10.0.

[aawsome]

@DianaNites Thanks for opening this issue!

Actually I think that the error message means that the error and the files which failed getting xattrs are ignored. Please check your snapshot, it may contain no file at all!

[DianaNites]

The backup run this came from failed for other unrelated reasons and I ended up backing up through a different method, so I dont know if the end result would have actually contained any files. I will note that based on network and disk activity it did seem to be reading and uploading them

Specifically I was backing up a remote location via a fuse mount, but ended up just copying the remote to a local disk and backing that up instead.

The option to explicitly ignore extended attributes however still seems useful for the future