[dolphin] [Bug 476391] New: BTRFS mirrored disks show as two devices in the Devices panel

[Gekko]

https://bugs.kde.org/show_bug.cgi?id=476391

            Bug ID: 476391
           Summary: BTRFS mirrored disks show as two devices in the
                    Devices panel
    Classification: Applications
           Product: dolphin
           Version: 23.08.2
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: panels: information
          Assignee: dolphin-bugs-null at kde.org
          Reporter: graham.oconnor at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
When mounting a BTRFS mirrored filesystem, both devices in the mirror show
under the Devices section on the left panel but one of them shows as
inaccessible. While there are technically two devices, it seems pointless to
show both when one of them is always inaccessible. It would seem better to just
show the virtual device containing the BTRFS filesystem as a single device.

STEPS TO REPRODUCE
1. Create a mirrored BTRFS filesystem on two devices
2. Mount the filesystem
3. 

OBSERVED RESULT
Both devices in the mirror appear but one is always inaccessible (not always
the same one)

EXPECTED RESULT
The single virtual device containing the filesystem should appear

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: 
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11

ADDITIONAL INFORMATION

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