[dolphin] [Bug 423187] Dolphin freezes when opening rclone or other FUSE mounts

[Roke Julian Lockhart Beedell]

https://bugs.kde.org/show_bug.cgi?id=423187

--- Comment #24 from Roke Julian Lockhart Beedell <4wy78uwh at rokejulianlockhart.addy.io> ---
(In reply to Jens from comment #23)

If what you're seeing is indeed an example of
https://discuss.kde.org/t/34436?u=rokejulianlockhart, and if you continue to
reproducibly wait minutes, try launching Dolphin, ascertaining what its PID is
(you can enable the relevant column in System Monitor's Processes page),
attaching `strace -Tr -p $id`, and ASAP attempting to access that unresponsive
external storage. During reproduction, check your terminal (this works best if
you have the terminal and Dolphin vertically adjacent, both always visible
irrespective of which window is focussed), and you should see not very much
activity, or a lot of repetition. Wait until Dolphin eventually becomes
responsive, then quickly kill Dolphin, and send over the syscall that shows via
its timestamp that it took over a minute to elapse. By the way, if you're
familiar with KDAB's Hotspot, `perf` might also record something useful. 🤷

I would do this myself, but reproduction is less consistent for me, when
accessing a FISH URI for a shut-down VM.

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