Hi,
Ever since updating to kernel 3.16, systemd-networkd very often fails
to get a DHCPv4 lease on a bond interface. This happens irregularly which makes
me suspect some kind of a race. The bond enslaves eth and wlan cards. Here is
the config:
------
/etc/systemd/network/bond0.netdev
[NetDev]
Name=bond0
Kind=bond/etc/systemd/network/bond0.network [Match] Name=bond0 [Network] Description=Bond interface DHCP=v4 [DHCPv4] UseDNS=false /etc/systemd/network/eth.network [Match] Name=eno1 [Network] Description=Wired interface Bond=bond0 /etc/systemd/network/wlan.network [Match] Name=wlp3s0 [Network] Description=Wireless interface Bond=bond0 $ cat /etc/modprobe.d/bonding.conf options bonding mode=active-backup options bonding primary=eno1 options bonding miimon=1000 ------ The wlan interface is managed by wpa_supplicant which is ordered "After=systemd-networkd.service". There is nothing suspicious in journald and by running networkd via cmdline with SYSTEMD_LOG_LEVEL=debug (I only see endless DISCOVER messages): ------ $ journalctl -u systemd-networkd.service -- Logs begin at Tue 2014-08-05 10:13:29 EDT, end at Tue 2014-08-05 11:05:07 EDT. -- Aug 05 10:13:29 borei systemd[1]: Starting Network Service... Aug 05 10:13:29 borei systemd-networkd[446]: bond0 : netdev ready Aug 05 10:13:29 borei systemd-networkd[446]: lo : gained carrier Aug 05 10:13:29 borei systemd-networkd[446]: bond0 : link configured Aug 05 10:13:29 borei systemd[1]: Started Network Service. Aug 05 10:13:29 borei systemd-networkd[446]: eno1 : link configured Aug 05 10:13:29 borei systemd-networkd[446]: wlp3s0 : link configured Aug 05 10:13:33 borei systemd-networkd[446]: wlp3s0 : gained carrier Aug 05 10:13:34 borei systemd-networkd[446]: bond0 : gained carrier ------ Interestingly, on the server side (dnsmasq) I see DISCOVER and OFFER messages for an IP address every 3 sec, but on the client no address is assigned to bond0. The bond itself is set up properly. And, of course, dhcpcd _is_ able to obtain a lease (I can also get a working network by assigning a static IP on the correct subnet): ------ $ journalctl -u [email protected] -- Logs begin at Tue 2014-08-05 10:13:29 EDT, end at Tue 2014-08-05 11:13:29 EDT. -- Aug 05 10:24:13 borei systemd[1]: Starting dhcpcd on bond0... Aug 05 10:24:13 borei dhcpcd[916]: version 6.4.3 starting Aug 05 10:24:13 borei dhcpcd[916]: all: IPv6 kernel autoconf disabled Aug 05 10:24:13 borei dhcpcd[916]: bond0: adding address fe80::18f7:74d:5764:92e9 Aug 05 10:24:13 borei dhcpcd[916]: if_addaddress6: Operation not supported Aug 05 10:24:13 borei dhcpcd[916]: error writing DUID: /etc/dhcpcd.duid: Read-only file system Aug 05 10:24:13 borei dhcpcd[916]: DUID 00:03:00:01:f0:1f:af:4d:36:99 Aug 05 10:24:13 borei dhcpcd[916]: bond0: IAID af:4d:36:99 Aug 05 10:24:14 borei dhcpcd[916]: bond0: rebinding lease of 10.0.0.21 Aug 05 10:24:19 borei dhcpcd[916]: bond0: leased 10.0.0.21 for 86400 seconds Aug 05 10:24:19 borei dhcpcd[916]: bond0: adding route to 10.0.0.0/24 Aug 05 10:24:19 borei dhcpcd[916]: bond0: adding default route via 10.0.0.1 Aug 05 10:24:19 borei dhcpcd[916]: forked to background, child pid 923 Aug 05 10:24:19 borei systemd[1]: Started dhcpcd on bond0. $ systemctl cat [email protected] # /usr/lib/systemd/system/[email protected] [Unit] Description=dhcpcd on %I Wants=network.target Before=network.target BindsTo=sys-subsystem-net-devices-%i.device After=sys-subsystem-net-devices-%i.device [Service] Type=forking PIDFile=/run/dhcpcd-%I.pid ExecStart=/usr/bin/dhcpcd -q -w %I ExecStop=/usr/bin/dhcpcd -x %I [Install] WantedBy=multi-user.target ------ I am a bit at a loss of how to debug this further... Any ideas? Thanks, -- Leonid Isaev GPG fingerprints: DA92 034D B4A8 EC51 7EA6 20DF 9291 EE8A 043C B8C4 C0DF 20D0 C075 C3F1 E1BE 775A A7AE F6CB 164B 5A6D
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