On Sun, May 9, 2010 at 18:42, David Baron <d_ba...@012.net.il> wrote:
> >> At certain times, seems Friday noontime, I am unable to shutdown the
> >> system. Instead of the usual scripts to killing all processes,
> unmounting
> >> everything and will now halt, goodby, I get:
> >>
> >> process running pstree (or something like that)
> >> shutdown aborted
> >>
> >> At this point, the system (or at least any console or UI) is dead.
> >>
> >> What it this?
>
>
> > Just see which process is running pstree.
> > "ps -eaf | grep pstree"
> > You could find the parent pid of pstree (second column).
> > Look at the parent of pstree, and the process started this one.
> > If you go back that way, finally you will reach init, but before that you
> > could find which system process started these processes.
> I'll have to try it when I know the thing is running.
>
> > As I recall, pstree is not part of basic installation.
> > It was put to do some scripting, regarding found, in
> > perl/python?
> > My first bet would be to remove offensive cron line and
> > shutdown normally. Than to do filesystem checks. Next,
> > to set cron to use pstree as a regular user. I think that
> > shutdown was done in some parts, aka closed network. What
> > has to wait, hangs the system.
> > Otherwise, there is a chance that some housekeeping pro-
> > cesses are started at noon every day. You could always
> > look at /etc directory and find them. Some unices have
> > it in /etc/periodic/daily. It starts with #!/bin/sh.
> > Another clue may be in /var/log, as a result of newsyslog.conf.
>
> I have no /etc/periodic and no logs for pstree
>
> I manually ran it (x11 variant) and this is what I got:
> init-+-Xprt
> |-akonadi_control-+-akonadi_ical_re
> | |-8*[akonadi_kabc_re]
> | |-4*[akonadi_kcal_re]
> | |-42*[akonadi_maildir]
> | |-akonadi_maildis
> | |-akonadi_nepomuk---{akonadi_nepomu}
> | |-akonadi_vcard_r
> | |-akonadiserver-+-mysqld---74*[{mysqld}]
> | | `-66*[{akonadiserver}]
> | `-4*[{akonadi_contro}]
> |-apmd
> |-atd
> |-avahi-daemon---avahi-daemon
> |-boinc
> |-clamd---2*[{clamd}]
> |-console-kit-dae---63*[{console-kit-da}]
> |-cron
> |-cupsd
> |-das_watchdog---{das_watchdog}
> |-3*[dbus-daemon]
> |-2*[dbus-launch]
> |-ddclient
> |-dirmngr
> |-dovecot-+-2*[dovecot-auth]
> | |-imap
> | |-3*[imap-login]
> | `-3*[pop3-login]
> |-exim4
> |-fail2ban-server---6*[{fail2ban-serve}]
> |-fetchmail
> |-2*[getty]
> |-gpm
> |-hald-+-hald-runner-+-hald-addon-inpu
> | | `-hald-addon-stor
> | `-{hald}
> |-in.tftpd
> |-inetd
> |-jackdbus
> |-kaccess
> |-kded4---{kded4}
> |-kdeinit4-+-kio_file
> | |-kio_http_cache_
> | |-kio_imap4
> | |-klauncher
> | |-ksmserver-+-kwin
> | | `-{ksmserver}
> | |-python---python---python
> | `-qjackctl---{qjackctl}
> |-kdm-+-Xorg
> | `-kdm---startkde-+-kwrapper4
> | `-2*[ssh-agent]
> |-kget
> |-kglobalaccel
> |-klipper
> |-klogd
> |-kmail---{kmail}
> |-kmix
> |-knemo
> |-knotify4
> |-korgac---{korgac}
> |-krunner---{krunner}
> |-kxkb---{kxkb}
> |-nepomukserver
> |-plasma-desktop-+-ksysguardd
> | `-7*[{plasma-desktop}]
> |-portmap
> |-postmaster-+-postmaster
> | `-postmaster---postmaster
> |-preload
> |-proftpd
> |-rpc.mountd
> |-rpc.statd
> |-smartd
> |-spamd---2*[spamd]
> |-sshd
> |-svscanboot-+-readproctitle
> | `-svscan
> |-syslogd
> |-tinyproxy---11*[tinyproxy]
> |-udevd---2*[udevd]
> |-xfs
> |-xfstt
> `-yakuake-+-bash---pstree.x11
> `-{yakuake}
> Press return to close
>
> Which would basically reflect what init ran and what kde4 is doing when I
> did
> it. Why would this be stuck at the end?
>
>
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>
>
pstree is used to list a tree of processes and it should not take much time.
I think your problem is arising from the originator of pstree. Have you
tried using "top" to see any other process is taking cpu/memory? Also take
a look
at all cron related directories and files, all files in /etc/cron.dailly,
/etc/crontab
