Bug 28169 - 6.2->7.0 upgrade loses /var/lib/dhcp/dhcpd.leases
Summary: 6.2->7.0 upgrade loses /var/lib/dhcp/dhcpd.leases
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: dhcpcd (Show other bugs)
(Show other bugs)
Version: 7.0
Hardware: i386 Linux
Target Milestone: ---
Assignee: Erik Troan
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2001-02-17 21:30 UTC by rgb
Modified: 2008-05-01 15:37 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2001-02-21 15:13:27 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description rgb 2001-02-17 21:30:34 UTC
From Bugzilla Helper:
User-Agent: Mozilla/4.76 [en] (X11; U; Linux 2.2.18 i686)

When upgrading from 6.2 to 7.0, the upgrade of dhcpcd left me with no
/var/lib/dhcp/dhcpd.leases.  This causes /etc/rc.d/init.d/dhcpd start (or
restart) to silently fail (silently in that I saw nothing reported
in e.g. /var/log/messages).  I diagnosed the problem by set -x at the top
of the script and noted failure at the line:

[ -f /var/lib/dhcp/dhcpd.leases ] || exit 0

When I touched the file and restarted again, everything went perfectly.

Note that this is awfully hard to reproduce for me personally without
re-upgrading my server, so I'll skip the next steps.  I will say that the
server was working perfectly immediately before and (once I touched
/var/lib/dhcp/dhcpd.leases) immediately after the upgrade, so it is almost
certain that removing the old dhcpd rpm removed the lease and installing
the new one failed to touch/preserve/recreate it.

Reproducible: Didn't try
Steps to Reproduce:
1. Can only reproduce by re-upgrading system, but circumstances make it
fairly certain that it is a bug in the upgrade process.

This is a simple one to fix.  Add a "touch /var/lib/dhcp/dhcpd.leases"
to the %post of the rpm.  This is harmless -- it preserves what is there
for a functional upgrade and creates the file for a new or distribution
revision upgrade.

A second suggestion might be to put SOMETHING a bit more constructive in
/etc/rc.d/init.d/dhcpd -- perhaps something like:

[ -f /usr/sbin/dhcpd ] || echo "dhcpd not installed";exit 0
[ -f /etc/dhcpd.conf ] || echo "/etc/dhcpd.conf not installed";exit 0
[ -f /var/lib/dhcp/dhcpd.leases ] || touch /var/lib/dhcp/dhcpd.leases

since there is really no reason to punt if the leases file doesn't exist --
just create it and go.  Or at least announce what's wrong if you're going
to punt.

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