Bug 1170049

Summary: losetup --partscan won't create partition devices
Product: [openSUSE] openSUSE Tumbleweed Reporter: Michal Koutný <mkoutny>
Component: BasesystemAssignee: systemd maintainers <systemd-maintainers>
Status: RESOLVED DUPLICATE QA Contact: E-mail List <qa-bugs>
Severity: Normal    
Priority: P5 - None    
Version: Current   
Target Milestone: ---   
Hardware: Other   
OS: Other   
Whiteboard:
Found By: --- Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description Michal Koutný 2020-04-21 09:53:40 UTC
## Environment

kernel-default-5.7.rc1-1.1.g84ddad4.x86_64
systemd-244-3.1.x86_64
util-linux-2.35.1-1.1.x86_64


## Expected behavior

image.0.raw is a whole dist image file
# losetup --find --show --partscan ~/image.0.raw

would created devices for the image plus the partitions
/dev/loop0
/dev/loop0p1
/dev/loop0p2


## Actual behavior

# losetup --find --show --partscan ~/image.0.raw

creates only the top device /dev/loop0

> Apr 20 16:54:30 blackbook kernel: loop_reread_partitions: partition scan of loop2 (/home/mkoutny/image.0.raw) failed (rc=-16)


## Observation
- this started happening after upgrade of kernel-default (from
  5.6.0-rc7-1.g0801cd7-default) or util-linux (from 2.34-4.4)
- SIGSTOPping udevd during losetup call allows the scan to succeed