172543 2007-03-28 10:33 0000 sys-devel/prelink - cronjob deletes manually-prelinked cache 2007-03-30 05:57:36 0000 1 1 1 Unclassified Gentoo Linux Ebuilds unspecified All Linux RESOLVED FIXED P2 normal --- 1 zarhan@iki.fi toolchain@gentoo.org zarhan@iki.fi 2007-03-28 10:33:04 0000 I hadn't even noticed that prelink, after an update, installed a cronjob. My updating procedure has usually consisted, after emerge -uvDaN world && emerge --depclean && revdep-rebuild of prelinking with prelink -avmR. I was wondering, why after every world-run, even if only a few packages got updated my prelink went through the entire system. Then I found this cronjob: ---- if [ "$PRELINKING" != yes ]; then if [ -f /etc/prelink.cache ]; then echo /usr/sbin/prelink -uav > /var/log/prelink.log /usr/sbin/prelink -uav >> /var/log/prelink.log 2>&1 \ || echo Prelink failed with return value $? >> /var/log/prelink.log rm -f /etc/prelink.cache # Restart init if needed [ -n "$(find `ldd /sbin/init | awk 'NF == 4 { print $3 }'` /sbin/init -ctime -1 2>/dev/null )" ] && /sbin/telinit u fi exit 0 fi ---- and then read description at conf.d/prelink ---- # Set this to no to disable prelinking altogether # (if you change this from yes to no prelink -ua # will be run next night to undo prelinking) PRELINKING=no --- Checked documentation at http://www.gentoo.org/doc/en/prelink-howto.xml ---- sys-devel/prelink-20060213 and later install a cron job in /etc/cron.daily/prelink. To enable it, edit the configuration file /etc/conf.d/prelink. This will run prelink daily in the background, as needed, saving you running the command manually. ----- Now, the way I'm understanding the docs, the *intended* functionality is that you can still run prelink manually instead of cron un-prelinking everything at next cron-run. Why is there the "prelink -uav"? Right now I deleted the entire cronscript, but maybe the conf.d/prelink should contain a third value "manual", which would be the default - so it wouldn't automatically prelink or un-prelink..I don't want to remember to remove the cronscript everytime prelink gets updated. brendlerjg@gmail.com 2007-03-28 17:35:41 0000 A second user's perspective. I like this scrpt! But I do concur. I initially went through the same thought process (although for me it was right after install, when I read the elog notice in my email). One of these two things should be: either (a) 3 branches in the script: off, manual, and automatic; or (b) the script should be initially installed commented out Also, many thanks for fixing the kde lines already! :) vapier@gentoo.org 2007-03-30 05:57:36 0000 added to cvs, thanks for the idea ! # Control prelinking behavior in the cronjob. # yes - automatically prelink the system # no - automatically un-prelink the system # "" - do nothing at all (user manages) # (if you change this from yes to no prelink -ua # will be run next night to undo prelinking) PRELINKING=""