Bug 502243

Summary: Operation details do not show the full command
Product: [Applications] partitionmanager Reporter: federico
Component: generalAssignee: Andrius Štikonas <andrius>
Status: REPORTED ---    
Severity: normal    
Priority: NOR    
Version First Reported In: 24.12.0   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description federico 2025-03-31 15:02:43 UTC 
SUMMARY

When doing an operation, it is possible to show additional details. KDE Partition manager will also show the command one can use on the command line; for example (only commands copied out from the details)

----
wipefs --all /dev/sdc1
sfdisk --force --delete /dev/sdc 1

sfdisk --force --append /dev/sdc
mkfs.fat -F32 -I -v /dev/sdc1
sfdisk --part-type /dev/sdc 1 c
fatlabel /dev/sdc1 label
fsck.fat -a -w -v /dev/sdc1
umount /dev/sdc1
----

STEPS TO REPRODUCE
1. Select drive
2. delete partitions
3. create new fat32 partition
4. apply operations
5. Click on "Details"

OBSERVED RESULT

The detail windows does not show always show the correct command

EXPECTED RESULT

I would expect that typing the shown commands would lead to the same outcome.
Instead typing (for example) "sfdisk --force --append /dev/sdc" starts "sfdisk" in interactive mode.
If one tries to start it in non-interactive mode, for example with ": | sfdisk --force --append /dev/sdc", then no changes are made to the disk, and the subsequent command fails.
In this case (one partition on one drive), the "workaround is to use "echo ',' | sfdisk --force --append /dev/sdc", but for more complex setups (multiple partitions), it would be better if the details match what one has to actually type.


SOFTWARE/OS VERSIONS
Output of kinfo:

Operating System: Debian GNU/Linux 12
KDE Plasma Version: 6.3.2
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.12.19-amd64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-8565U CPU @ 1.80GHz
Memory: 33.4 GB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620


ADDITIONAL INFORMATION
Comment 1 Andrius Štikonas 2025-03-31 18:27:18 UTC 
Well, KDE Partition Manager does not run echo ',' | sfdisk --force --append /dev/sdc" since that's not a Linux command you can execute. Pipes like this are just bash syntax. Partition Manager does not run bash at all and it indeed simply runs sfdisk --force --append /dev/sdc" and then writes to it's stdin.

I think there is a bit more info on the terminal if you launch with KPMCORE_DEBUG=1 partitionmanager. If I recall correctly, it will show what data is written to the process.
Comment 2 federico 2025-04-01 04:41:37 UTC 
> KDE Partition Manager does not run echo ',' | sfdisk --force --append /dev/sdc" since that's not a Linux command you can execute.

I did not write that partition manager uses "echo ',' | sfdisk --force --append /dev/sdc", but that it was my workaround.

> it indeed simply runs sfdisk --force --append /dev/sdc" and then writes to it's stdin.


But that can't be right, at least, does not seem to be right, for the following two reasons:

1) If I create multiple partitions, in the details I see "sfdisk --force --append /dev/sdc", with no sizes or percentages on how much space they should take.

2) executing "sfdisk --force --append /dev/sdc" does not change the state on the disk
Comment 3 federico 2025-04-01 05:11:29 UTC 
Opps, sorry, missed the part "and then writes to it's stdin"

It would be then great if it would be possible to see what's written in the details...