On Leap 42.3 I notice that zypper up/patch hangs at the end. If I look at the process stack, I see things like 0 19778 08:43:40 0:00:09 zypper --no-refresh patch -l 0 19797 08:43:51 0:00:00 0 19799 08:43:52 0:00:00 0 23992 08:53:53 0:00:00 lsof -n -FpcuLRftkn0 0 23993 08:53:53 0:00:00 lsof -n -FpcuLRftkn0 and 0 25529 09:03:17 0:00:19 zypper --no-refresh up -l 0 15628 09:15:17 0:00:00 lsof -n -FpcuLRftkn0 0 15629 09:15:17 0:00:00 lsof -n -FpcuLRftkn0 0 25531 09:03:21 0:00:00 0 25532 09:03:22 0:00:00 And I *also* see $ ps -ef | grep -i btr merijn 16635 24433 0 09:19 pts/6 00:00:00 grep -i btr root 25531 25529 0 09:03 pts/8 00:00:00 [btrfs-defrag-pl] <defunct> $ ps -ef | grep -w 25529 root 15628 25529 0 09:15 pts/8 00:00:00 lsof -n -FpcuLRftkn0 merijn 16789 24433 0 09:20 pts/6 00:00:00 grep -w 25529 root 25529 25528 1 09:03 pts/8 00:00:19 zypper --no-refresh up -l root 25531 25529 0 09:03 pts/8 00:00:00 [btrfs-defrag-pl] <defunct> root 25532 25529 0 09:03 pts/8 00:00:00 [snapper.py] <defunct> and in pstree |-kdeinit5-+-kded5-+-ssh | | |-xterm---tcsh---y2---zypper-+-btrfs-defrag-pl | | | |-lsof---lsof | | | `-snapper.py which surprises me, as I do *not* have any btrfs file systems both <defunct> processes won't disappear on kill -9 -- H.Merijn Brand http://tux.nl Perl Monger http://amsterdam.pm.org/ using perl5.00307 .. 5.27 porting perl5 on HP-UX, AIX, and openSUSE http://mirrors.develooper.com/hpux/ http://www.test-smoke.org/ http://qa.perl.org http://www.goldmark.org/jeff/stupid-disclaimers/