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From: Joerg Thoennes <[EMAIL PROTECTED]>
To: Debian Bug Tracking System <[EMAIL PROTECTED]>
Subject: anacron *never* runs if power state cannot be determined
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Date: Fri, 06 Sep 2002 09:48:30 +0200
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Package: anacron
Version: 2.3-6
Severity: grave
Tags: patch
Justification: renders package unusable
I noticed that my locate db is older than 8 days, but my Laptop was on
mains power the last nights. So I started to investigate and found the
following:
/etc/cron.daily/find is responsible for updating the database.
/etc/crontab specifies when to run daily cron jobs:
25 6 * * * root test -e /usr/sbin/anacron || run-parts --report
/etc/cron.daily
Since anacron is installed, running the job is left to anacron.
/etc/cron.d/anacron specifies when to run anacron:
30 7 * * * root test -x /etc/init.d/anacron && /etc/init.d/anacron
start >/dev/null
Looking at /etc/init.d/anacron reveals the problem:
[...]
start)
# Really on_ac_power is not a sufficient test, as it only looks at
# APM and we ought to also check whether we're on a UPS battery.
if test \! -x /usr/bin/on_ac_power || on_ac_power >/dev/null
then
echo -n "Starting anac(h)ronistic cron: anacron"
anacron -s
echo "."
else
echo "Starting anac(h)ronistic cron: deferred while on battery power."
fi
;;
[...]
Running by hand
/etc/init.d/anacron start
gives
Starting anac(h)ronistic cron: deferred while on battery power.
but my system is *NOT* on battery power.
Looking at "man on_ac_power" shows the solution:
[...]
EXIT STATUS
0 (true) System is on mains power
1 (false) System is not on mains power
255 (false) Power status could not be determined
^^^^^^^^^^^
[...]
Since != 0 counts as false, the above test also fails, if the power
status could not be determined: My current (default Debian) kernel had no APM
support enabled.
I suggest the following patch:
-----
start)
# Really on_ac_power is not a sufficient test, as it only looks at
# APM and we ought to also check whether we're on a UPS battery.
if test \! -x /usr/bin/on_ac_power || (on_ac_power >/dev/null; test "$?"
-eq 0)
then
echo -n "Starting anac(h)ronistic cron: anacron"
anacron -s
echo "."
else
echo "Starting anac(h)ronistic cron: deferred while on battery power."
fi
;;
-----
Cheers, Jörg
-- System Information
Debian Release: 3.0
Architecture: i386
Kernel: Linux alcor 2.2.19 #1 Sat Oct 20 18:09:49 EST 2001 i686
Locale: LANG=C, LC_CTYPE=C
Versions of packages anacron depends on:
ii debianutils 1.16 Miscellaneous utilities specific t
ii exim 3.35-1 An MTA (Mail Transport Agent)
ii exim [mail-transport-agent] 3.35-1 An MTA (Mail Transport Agent)
ii libc6 2.2.5-6 GNU C Library: Shared libraries an
ii sysklogd 1.4.1-10 System Logging Daemon
ii sysklogd [system-log-daemon] 1.4.1-10 System Logging Daemon
---------------------------------------
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Date: Tue, 2 Aug 2005 20:38:43 +1000
From: Pascal Hakim <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: [anacron]: anacron *never* runs if power cannot be determined
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Hi,
I'm closing this bug as it has been fixed in the recently released
Debian Sarge distribution.
Cheers,
Pasc
--
Pascal Hakim 0403 411 672
Do Not Bend
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