https://bugs.kde.org/show_bug.cgi?id=445294

            Bug ID: 445294
           Summary: Dolphin and Disks & Devices applet do not say anything
                    when unmounting removable device fails due to
                    incomplete file copy. File system is sometimes
                    corrupted when I try to access the device while safely
                    removing is in progress, causing data loss.
           Product: frameworks-kio
           Version: 5.87.0
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kio-bugs-n...@kde.org
          Reporter: bugsefor...@gmx.com
                CC: kdelibs-b...@kde.org
  Target Milestone: ---

Created attachment 143422
  --> https://bugs.kde.org/attachment.cgi?id=143422&action=edit
screenshot

STEPS TO REPRODUCE
1. connect a removable storage device (I use a flash drive) to usb port (my
system does not mount removable devices automatically)
2. open Dolphin
3. choose a big file (I used a 1.3 GiB video file) and copy it to your
removable device: drag it, drop it on your device in Places panel of Dolphin
and choose "Copy here" from context menu
4. when Plasma (falsely, due to annoying and confusing bug 281270) notifies
finished file copy, try to remove your device safely: right-click on your
device in Places panel of Dolphin and choose "Safely remove"

OBSERVED RESULT
The device does not disappear from Places panel, its icon indicates that it was
unmounted and Dolphin does not
display any message saying that something is in progress.
When I open Disks & Devices applet in system tray, it says "Removing..." and it
remains in this state until the file copy is really finished. Please see the
attached screenshot.
If I try to access the removable device via Dolphin while Disks & Devices
applet says "Removing...",
the file system (ntfs in my case) is sometimes corrupted (dmesg log says "I/O
error" next time I try to mount it) and data is lost.

EXPECTED RESULT
if I'm not mistaken, in the past both Dolphin and Disks & Devices applet
clearly told users when safe removing failed for any reason. This is the
expected result. 

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.23.3
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Graphics Platform: Wayland

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