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Created attachment 1297481 [details]
output of reproducer script

Description of problem:
When you load or present new tapes to the system and uevent is generated for those devices the systemd-udevd does not create the /dev/tape/by-id always.

It's not happening all the times but is quite easily reproducible with scsi_debug


Version-Release number of selected component (if applicable):
7.3 


How reproducible:
presenting scsi tapes to the system 

Steps to Reproduce:
1).

for ((i=0; i<30; i++)); do modprobe scsi_debug ptype=1 add_host=2; sleep 5 ; ll -r /dev/tape/ ; modprobe -r scsi_debug ; done

2) check the result of the ls. You should have 4 symlinks there, to st0 nst0 st1 and nst1 as you are loading 2 tapes.

Actual results:
The symlinks are not created allways.

Expected results:
The symlinks are created allways.

Additional info:
When you map the tape and the symlinks are not created, you can fix it by running udevadm trigger.

Attaching journalctl -f with logs from systemd-udevd in debug mode.

Created attachment 1297482 [details]
sosreport with systemd-udevd in debug mode