[Petter Reinholdtsen]
> It would be nice if /lib/udev/write_net_rules could be changed to log
> a message to syslog when 70-persistent-net.rules is updated, to be
> able to figure out when it happen. I in the places I suspect are
> related to this issue, add similar instrumentation in the hw-detect
> code.
Anyone around to help out with this issue?
While waiting for ideas how to find the source of the duplicate
entries, I added the following workaround to debian-edu-config,
rewriting the 70-persistent-net.rules file to remove duplicate if
anyone are present in the pre-pkgsel step. It solve the problem for
us for now, but I suspect a generic fix should be added to the code
inserting the duplicate entries.
diff --git a/share/debian-edu-config/d-i/pre-pkgsel
b/share/debian-edu-config/d-i/pre-pkgsel
index c298731..34d47a9 100644
--- a/share/debian-edu-config/d-i/pre-pkgsel
+++ b/share/debian-edu-config/d-i/pre-pkgsel
@@ -209,6 +209,13 @@ EOF
echo "$MAILNAME" > /target/etc/mailname
fi
+ # Workaround for bug in d-i/udev, causing duplicate entries in
+ # /etc/udev/rules.d/70-persistent-net.rules in both d-i and
+ # /target/. See bug $765577 for the details.
+ if in-target /usr/share/debian-edu-config/tools/workaround-udev-bug-765577
; then
+ error "disabled duplicate udev rule (bug #765577)"
+ fi
+
# Make sure that the interfaces are there for the cfengine run if
# network isn't already configured
if route | grep -q default ; then
diff --git a/share/debian-edu-config/tools/workaround-udev-bug-765577
b/share/debian-edu-config/tools/workar
new file mode 100755
index 0000000..7054c58
--- /dev/null
+++ b/share/debian-edu-config/tools/workaround-udev-bug-765577
@@ -0,0 +1,71 @@
+#!/usr/bin/perl
+#
+# Implement workaround for bug #765577 by removing duplicate entries
+# from the persistent network interface name rule before rebooting for
+# the first time, to make sure eth0 is present on the machines with
+# fixed network setup in /etc/network/interfaces
+
+use strict;
+use warnings;
+use Getopt::Std;
+
+my $bugurl = "https://bugs.debian.org/765577";;
+
+my $rulefile = "/etc/udev/rules.d/70-persistent-net.rules";
+my $newfile = "$rulefile.new";
+
+my $debug = 0;
+my %linecache;
+my $modified = 0;
+my %opts;
+
+sub usage {
+ my $retval = shift;
+ print <<EOF;
+Usage: $0: [-dn]
+Fix
+ -d enable debugging
+ -n do not modify $rulefile
+EOF
+ exit($retval) if $retval;
+}
+
+getopts("dn", \%opts) || usage(1);
+
+open(my $rh, '<', $rulefile) || die "error: unable to read from $rulefile";
+my $wh;
+if (!$opts{'n'}) {
+ open($wh, '>', "$newfile") || die "error: unable to write to $newfile";
+}
+my $shortline;
+while (my $line = <$rh>) {
+ $shortline = $line;
+ $shortline =~ s/, NAME="[^"]+"//;
+ print STDERR "shortline: '$shortline'\n" if $opts{'d'};
+ if ($shortline !~ m/^\s*$/
+ && $shortline =~ m/^SUBSYSTEM=/
+ && exists $linecache{$shortline}) {
+ # Seen the same line before, skip it.
+ print STDERR "skipping line\n" if $opts{'d'};
+ $modified = 1;
+ if (!$opts{'n'}) {
+ print $wh "# Duplicate entry disabled, workaround for
$bugurl\n#$line";
+ }
+ next;
+ }
+ $linecache{$shortline} = 1;
+ if (!$opts{'n'}) {
+ print $wh $line;
+ }
+}
+close($rh);
+if (!$opts{'n'}) {
+ close($wh);
+ if ($modified) {
+ rename("$newfile", "$rulefile") || die "error: unable to rename
$newfile to $rulefile";
+ } else {
+ unlink $newfile;
+ }
+} else {
+}
+exit ! $modified;
--
Happy hacking
Petter Reinholdtsen
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