bin/140462: devd.pid locked by /etc/rc.d and dhclient (regression)
Warren Block
wblock at wonkity.com
Wed Nov 11 00:30:04 UTC 2009
>Number: 140462
>Category: bin
>Synopsis: devd.pid locked by /etc/rc.d and dhclient (regression)
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Nov 11 00:30:03 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator: Warren Block
>Release: 8.0-RC2
>Organization:
>Environment:
FreeBSD lightning 8.0-RC2 FreeBSD 8.0-RC2 #0: Fri Nov 6 21:23:46 MST 2009 root at lightning:/usr/obj/usr/src/sys/LIGHTNING i386
>Description:
After a fresh boot or reboot of 8.0-RC2, /var/run/devd.pid is locked preventing devd restart:
# /etc/rc.d/devd restart
Stopping devd.
Starting devd.
devd: devd already running, pid: 398
/etc/rc.d/devd: WARNING: failed to start devd
This is due to locks on /var/run/devd.pid remaining even after devd is killed:
lightning% lsof /var/run/devd.pid
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
devd 400 root 6w VREG 0,101 3 47124 /var/run/devd.pid
dhclient 865 root 6w VREG 0,101 3 47124 /var/run/devd.pid
dhclient 1024 _dhcp 6w VREG 0,101 3 47124 /var/run/devd.pid
This is a regression from 7-STABLE, where devd.pid is only locked by
devd after startup.
>How-To-Repeat:
Boot 8.0-RC2 with dhclient run from /etc/rc.conf. Try to restart devd. devd will be killed but not restarted because the pidfile is still present because of locks.
Mailing list thread start:
http://docs.freebsd.org/cgi/getmsg.cgi?fetch=862294+0+/usr/local/www/db/text/2009/freebsd-current/20091018.freebsd-current
>Fix:
Workaround: rather than restart devd in one step, kill devd and rm /var/run/devd.pid. Then start devd.
>Release-Note:
>Audit-Trail:
>Unformatted:
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