Public bug reported:
Binary package hint: mlocate
The mlocate cron job (/etc/cron.daily/mlocate) doesn't always respect
its lockfile. The cron job always removes the lockfile, even if it
aborts because the lockfile already exists. The result is that every
other concurrent invocation of /etc/cron.daily/mlocate will run
updatedb.
The bug is pretty obvious. From /etc/cron.daily/mlocate:
-----
trap "rm -f $LOCKFILE" EXIT
if [ -e "$LOCKFILE" ]; then
echo >&2 "Warning: $LOCKFILE present, not running updatedb."
exit 1
else
touch "$LOCKFILE"
fi
-----
The trap to remove the lockfile is turned on before checking for the
existence of the lockfile. So even if the lockfile exists, we rm it on
exit. Moving the trap inside the else block should fix it.
# lsb_release -rd
Description: Ubuntu 10.04 LTS
Release: 10.04
# apt-cache policy mlocate
mlocate:
Installed: 0.22.2-1ubuntu1
Candidate: 0.22.2-1ubuntu1
** Affects: mlocate (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/731632
Title:
mlocate cron job doesn't respect its lockfile
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