kpartx not removing loop devices while deleting an image in Suse linux 12.4 and greater version

I am trying to mount a backup session of a linux system to browse files and restore files. In order to that I need to mount images of the source. Using command "kpartx -av /imagename" I am doing it successfully. Also this command bind the image with some loop device/s internally. when I am trying to umount the session using "kpartx -d /imagename" command, the loop devices getting deleted in case of suse version 11 but same thing is not happening for suse version greater than 12.4.

is there any requirement to modify udev rules for suse versions greater than 12.4 ( compared to suse linux 11 )to delete loop devices associated with image ( which I am trying to delete through kpartx -d command ) ?

If you do a second kpartx -a does it not re-use the loop device?

@smallpond

No it uses another loop device.

To further identify the problem, does "losetup -d ..." succesfully remove the loop device?

Anything interesting in the strace output?

Although the kpartx man page doesn't promise to clean up, I'd call it a bug. The strace output should show if it tries to remove it and fails for some reason. Permissions can mess up good intentions.

Hi Folks

It took me a lot of time to try strace for this issue. Because I was facing an issue while installing strace in Suse from version 12 to 15.

@rknichols "losetup -d .." removes loop device successfully.
Attached the screenshot of my detailed steps and output of trace kpartx( kpartx_d-fail.txt )

one more strace check