[Bug 1822585] Comment bridged from LTC Bugzilla

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Fri May 10 09:09:30 UTC 2019


------- Comment From kgraul at de.ibm.com 2019-05-10 05:08 EDT-------
I installed a new 19.04, which came with kernel -13. I ran the same tests as before, and did not see any problem. Please see my complete log below for a replay.

root at s8345042:~# uname . -a
Linux s8345042 5.0.0-13-generic #14-Ubuntu SMP Mon Apr 15 14:58:28 UTC 2019 s390x s390x s390x GNU/Linux

root at s8345042:~# cat /etc/os-release
NAME="Ubuntu"
VERSION="19.04 (Disco Dingo)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 19.04"
VERSION_ID="19.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=disco
UBUNTU_CODENAME=disco

root at s8345042:~# chzdev -e -a qeth e406
Configuring devices in the active configuration only
QETH device 0.0.e406:0.0.e407:0.0.e408 configured

root at s8345042:~# ip a
<snip>
3: ence406: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:70 brd ff:ff:ff:ff:ff:ff

journalctl -x output, first qeth, then systemd:
----------------------
May 10 10:50:37 s8345042 kernel: crw_info : CRW reports slct=0, oflw=0, chn=0, rsc=3, anc=1, erc=4, rsid=12
May 10 10:50:37 s8345042 kernel: crw_info : CRW reports slct=0, oflw=0, chn=0, rsc=3, anc=1, erc=4, rsid=13
May 10 10:50:37 s8345042 kernel: crw_info : CRW reports slct=0, oflw=0, chn=0, rsc=3, anc=1, erc=4, rsid=14
May 10 10:50:59 s8345042 kernel: qeth.e804c4: 0.0.e406: Priority Queueing not supported
May 10 10:50:59 s8345042 kernel: qdio: 0.0.e408 OSA on SC 14 using AI:1 QEBSM:1 PRI:1 TDD:1 SIGA: W A
May 10 10:50:59 s8345042 systemd-udevd[1115]: Using default interface naming scheme 'v240'.
May 10 10:50:59 s8345042 systemd-udevd[1115]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
May 10 10:50:59 s8345042 kernel: qeth.6adf49: 0.0.e406: The device represents a Bridge Capable Port
May 10 10:50:59 s8345042 kernel: qeth.cc0c57: 0.0.e406: MAC address 02:a2:2d:00:06:70 successfully registered on device eth0
May 10 10:50:59 s8345042 kernel: qeth 0.0.e406 ence406: renamed from eth0
May 10 10:50:59 s8345042 kernel: qeth.26d434: 0.0.e406: Device is a OSD Express card (level: 0774)
with link type OSD_10GIG.
May 10 10:50:59 s8345042 kernel: qeth.f02020: 0.0.e406: QDIO data connection isolation is deactivated
May 10 10:50:59 s8345042 systemd-networkd[327]: eth0: Interface name change detected, eth0 has been renamed to ence406.
May 10 10:50:59 s8345042 networkd-dispatcher[663]: WARNING:Unknown index 3 seen, reloading interface list
May 10 10:50:59 s8345042 systemd-udevd[1125]: Using default interface naming scheme 'v240'.

root at s8345042:~# lszdev qeth
TYPE  ID                          ON   PERS  NAMES
qeth  0.0.bdf0:0.0.bdf1:0.0.bdf2  yes  yes   enccw0.0.f5f0
qeth  0.0.e406:0.0.e407:0.0.e408  yes  no    ence406

root at s8345042:~# vmcp att e40c-e40e \*
E40C-E40E ATTACHED TO S8345042

root at s8345042:~# chzdev -a -e qeth e40c
Configuring devices in the active configuration only
QETH device 0.0.e40c:0.0.e40d:0.0.e40e configured

root at s8345042:~# ip a
<snip>
3: ence406: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:70 brd ff:ff:ff:ff:ff:ff
4: ence40c: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:71 brd ff:ff:ff:ff:ff:ff

root at s8345042:~# lszdev qeth
TYPE  ID                          ON   PERS  NAMES
qeth  0.0.bdf0:0.0.bdf1:0.0.bdf2  yes  yes   enccw0.0.f5f0
qeth  0.0.e406:0.0.e407:0.0.e408  yes  no    ence406
qeth  0.0.e40c:0.0.e40d:0.0.e40e  yes  no    ence40c

root at s8345042:~# ip link add dev ence406.201 link ence406 type vlan id
201

root at s8345042:~# ip a
<snip>
3: ence406: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:70 brd ff:ff:ff:ff:ff:ff
4: ence40c: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:71 brd ff:ff:ff:ff:ff:ff
5: ence406.201 at ence406: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:70 brd ff:ff:ff:ff:ff:ff

root at s8345042:~# vmcp att e421-e423 \*
E421-E423 ATTACHED TO S8345042

root at s8345042:~# chzdev -a -e qeth e421
Configuring devices in the active configuration only
QETH device 0.0.e421:0.0.e422:0.0.e423 configured

root at s8345042:~# ip a
<snip>
3: ence406: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:70 brd ff:ff:ff:ff:ff:ff
4: ence40c: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:71 brd ff:ff:ff:ff:ff:ff
5: ence406.201 at ence406: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:70 brd ff:ff:ff:ff:ff:ff
6: ence421: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:a2:2d:00:06:72 brd ff:ff:ff:ff:ff:ff

root at s8345042:~# lszdev qeth
TYPE  ID                          ON   PERS  NAMES
qeth  0.0.bdf0:0.0.bdf1:0.0.bdf2  yes  yes   enccw0.0.f5f0
qeth  0.0.e406:0.0.e407:0.0.e408  yes  no    ence406
qeth  0.0.e40c:0.0.e40d:0.0.e40e  yes  no    ence40c
qeth  0.0.e421:0.0.e422:0.0.e423  yes  no    ence421

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https://bugs.launchpad.net/bugs/1822585

Title:
  OSA/qeth inconsistent interface names

Status in Ubuntu on IBM z Systems:
  Confirmed
Status in s390-tools package in Ubuntu:
  New

Bug description:
  After doing an installation of an s390x system with disco where OSA
  devices are in use (means LPAR and z/VM) the device name of the
  default interface that is generated during the installation is file,
  for example:

  ubuntu at s1lp15:~$ lszdev qeth | grep yes
  qeth  0.0.c000:0.0.c001:0.0.c002  yes  yes   encc000

  If another device is created (e.g. with the help of: sudo chzdev -e
  c003), it name is no longer based on the address, but it get's an
  'eth?' name:

  ubuntu at s1lp15:~$ lszdev qeth | grep yes
  qeth  0.0.c000:0.0.c001:0.0.c002  yes  yes   encc000
  qeth  0.0.c003:0.0.c004:0.0.c005  yes  yes   eth0

  The coressponding 'ip a' line is:
  9: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
  (02:29:22 PM) jfh:     link/ether 5a:2e:d8:c6:c1:03 brd ff:ff:ff:ff:ff:ff

  After a 'sudo systemctl restart systemd-udev-trigger.service' it get's the correct name 'encc003':
  9: encc003: <BROADCAST,MULTICAST>

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