Just a heads up for this bug. We are waiting it to show up on 14.04.3.
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https://bugs.launchpad.net/bugs/1513980
Title:
Ubuntu 14.04.03 did not detect Link down on Houston CU network adapter
ports when cable pulled
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Vivid:
In Progress
Status in linux source package in Wily:
Fix Released
Status in linux source package in Xenial:
Fix Released
Bug description:
Problem Description:
====================
I installed Houston CU (feature code 2CC1) PCIe2 10GbE SFP+ CU 4-port
Converged Network Adapter in slot P1-C2 of tul117fp1 system. The
system is configured as PowerNV and running Ubuntu 14.04.03
- I configured 2 copper ports of the adapter and running network
stress on it for several hours. I then pulled cable and waited for
sometime.
- The OS did not detect the link down. Even though the TX/RX traffic
stopped on the ports.
- Kernel log and dmesg did not have any entry to indicate link down
after cable pulled.
0007:00:00.0 PCI bridge: IBM Device 03dc
0007:01:00.0 Ethernet controller: Emulex Corporation OneConnect NIC (Lancer)
(rev 10)
0007:01:00.1 Ethernet controller: Emulex Corporation OneConnect NIC (Lancer)
(rev 10)
0007:01:00.2 Ethernet controller: Emulex Corporation OneConnect NIC (Lancer)
(rev 10)
0007:01:00.3 Ethernet controller: Emulex Corporation OneConnect NIC (Lancer)
(rev 10)
0007:01:00.4 Fibre Channel: Emulex Corporation OneConnect FCoE Initiator
(Lancer) (rev 10)
0007:01:00.5 Fibre Channel: Emulex Corporation OneConnect FCoE Initiator
(Lancer) (rev 10)
- ifconfig -a cmd still show link up
eth43 Link encap:Ethernet HWaddr 00:90:fa:6e:e0:f2
inet addr:103.1.1.15 Bcast:103.1.1.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:7543074880 errors:1 dropped:9 overruns:0 frame:1
TX packets:5926170683 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8997647070924 (8.9 TB) TX bytes:7177651764733 (7.1 TB)
eth44 Link encap:Ethernet HWaddr 00:90:fa:6e:e0:f3
inet addr:103.1.2.15 Bcast:103.1.2.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:5926170613 errors:1 dropped:0 overruns:0 frame:1
TX packets:7543089239 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7488707854629 (7.4 TB) TX bytes:8619256135370 (8.6 TB)
Paul, looking at the source code for the driver in Ubuntu 14.04.3 the
driver doesn't log any messages after an update to the link status.
The following commit upstream adds this functionality:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=18824894dbec3eb2202fc92d52a0c8bd27c8a63f
I'll create a test kernel with this patch applied and will attach it
here so you can test this commit
- I installed Ubuntu patched kernel
- I setup and re-ran the test on Houston adapter. I verified that with
the patch link Up/Down events now get logged properly when cable
pulls.
I verified the patch and it fixed the problem
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