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On two different laptops I've had rpm hang while updating btrfsmaintenance,
during the update from Leap 15.0 to Leap 15.1, to the point were rpm didn't
respond to SIGTERM, so I had to use SIGKILL. The first laptop didn't even use
btrfs. On the second laptop I got the following console output (I didn't get
the error until I killed rpm):


(2550/3168) Installerar: btrfsmaintenance-0.4.2-lp151.1.1.noarch
.....................................................................................................[fel]
Installationen av btrfsmaintenance-0.4.2-lp151.1.1.noarch misslyckades:
Fel: Subprocess failed. Error: RPM misslyckades: Updating
/etc/sysconfig/btrfsmaintenance ...                                             
Warning: btrfs-scrub.timer changed on disk. Run 'systemctl daemon-reload' to
reload units.                                                                   

Avbryt, f�rs�k igen, ignorera? [a/f/i] (a): f
Ytterligare RPM-utdata:
Updating /etc/sysconfig/btrfsmaintenance ...                                    
warning: file /usr/lib/zypp/plugins/commit/btrfs-defrag-plugin.py: remove
failed: No such file or directory                                               
Warning: btrfs-scrub.timer changed on disk. Run 'systemctl daemon-reload' to
reload units.

When it retried, it succeeded.

Reproducible: Sometimes