[dolphin] [Bug 412163] New: Checking for freespace BEFORE copy instead of during or once MERGE has been clicked.

[dft]

https://bugs.kde.org/show_bug.cgi?id=412163

            Bug ID: 412163
           Summary: Checking for freespace BEFORE copy instead of during
                    or once MERGE has been clicked.
           Product: dolphin
           Version: 19.08.1
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: dieseltrike at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
Lets say I have 100GB free. I want to RESUME copying a folder onto the drive of
120GB. Lets say it only has 2GB of copying needed as I stopped it around 118GB
copied. I will get an error saying "There is not enough space on the disk to
write file". This is false as once the folder was merged I would have 98GB
free. It falsely assumes I need space for the ENTIRE copy. This means I can't
use Dolphin to resume a copy and have to open up another file manager that
checks for free space DURING the copy not before.

STEPS TO REPRODUCE
1. Format a 32GB partition
2. Try copy 20GB on to it
3. Cancel the copy at around 16GB copied - You should have 16GB free
4. Try resuming the copy - technically it should now only need to copy the
missing 16GB.
5. It will fail as it assumes it needs 20GB free...


OBSERVED RESULT
"There is not enough space on the disk to write file"

EXPECTED RESULT
Copying should resume just fine when clicking merge. Available space needed
should be an information message not a halt type message

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE Neon 5.16
(available in About System)
KDE Plasma Version: 5.16.5
KDE Frameworks Version: 5.62.0
Qt Version: 5.12.3

ADDITIONAL INFORMATION
This is a show stopper for Dolphin

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