Ubuntu on IBM z Systems

  1. Bug #1892367
  2. Comment #29

Comment 29 for bug 1892367

Revision history for this message
bugproxy (bugproxy) wrote : Comment bridged from LTC Bugzilla

------- Comment From <email address hidden> 2021-03-31 02:13 EDT-------
Tested on focal.
---------------

dpkg -l | grep s390-tools
ii s390-tools 2.12.0-0ubuntu3.3 s390x fundamental utilities for Linux on z Systems
ii s390-tools-signed 2.12.0-0ubuntu3.3 s390x Signed zipl stage3.bin
root@m35lp41:~#
root@m35lp41:~#
root@m35lp41:~# cat /proc/version
Linux version 5.4.0-70-generic (buildd@bos02-s390x-010) (gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)) #78-Ubuntu SMP Fri Mar 19 13:25:37 UTC 2021
root@m35lp41:~# cat /sys/devices/qeth/0.0.bd00/buffer_count
64
root@m35lp41:~# chzdev qeth bd00 -p layer2=1 buffer_count=128
Configuring devices in the persistent configuration only
QETH device 0.0.bd00:0.0.bd01:0.0.bd02 configured
Note: The initial RAM-disk must be updated for these changes to take effect:
- QETH device 0.0.bd00:0.0.bd01:0.0.bd02
update-initramfs: Generating /boot/initrd.img-5.4.0-70-generic
Using config file '/etc/zipl.conf'
Building bootmap in '/boot'
Adding IPL section 'ubuntu' (default)
Preparing boot device: dasda (af8a).
Done.
root@m35lp41:~# cat /sys/devices/qeth/0.0.bd00/buffer_count
64
root@m35lp41:~# reboot
----
Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-70-generic s390x)

* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage

System information as of Wed 31 Mar 2021 06:12:05 AM UTC

System load: 0.38 Processes: 212
Usage of /: 6.7% of 20.18GB Users logged in: 0
Memory usage: 2% IPv4 address for encbd00: 172.18.60.41
Swap usage: 0%

0 updates can be installed immediately.
0 of these updates are security updates.

**************************************************************
* *
* The system was installed using *
* TESSIA *
* Task Execution Supporter and System Installation Assistant *
* *
* Open source repo: https://gitlab.com/tessia-project *
* (GitHub mirror: https://github.com/tessia-project) *
* *
* Documentation is located here: *
* https://gitlab.com/tessia-project/tessia/-/tree/master/doc *
* *
* To create custom templates for auto installation see: *
* > tess autotemplate add --help *
* *
**************************************************************

Last login: Wed Mar 31 06:07:43 2021 from 172.18.0.1
root@m35lp41:~#
root@m35lp41:~#
root@m35lp41:~# cat /sys/devices/qeth/0.0.bd00/buffer_count
128
---

And looks good.
Thank you for the fix.

------- Comment From <email address hidden> 2021-03-31 02:44 EDT-------
Tested on Groovy
----------------

root@m35lp41:~# dpkg -l | grep s390-tools
ii s390-tools 2.14.0-1ubuntu1.2 s390x fundamental utilities for Linux on z Systems
ii s390-tools-signed 2.14.0-1ubuntu1.2 s390x Signed zipl stage3.bin
root@m35lp41:~#
root@m35lp41:~# cat /proc/version
Linux version 5.8.0-48-generic (buildd@bos02-s390x-020) (gcc (Ubuntu 10.2.0-13ubuntu1) 10.2.0, GNU ld (GNU Binutils for Ubuntu) 2.35.1) #54-Ubuntu SMP Fri Mar 19 14:18:31 UTC 2021
root@m35lp41:~# cat /sys/devices/qeth/0.0.bd00/buffer_count
64
root@m35lp41:~# chzdev qeth bd00 -p layer2=1 buffer_count=128
Configuring devices in the persistent configuration only
QETH device 0.0.bd00:0.0.bd01:0.0.bd02 configured
Note: The initial RAM-disk must be updated for these changes to take effect:
- QETH device 0.0.bd00:0.0.bd01:0.0.bd02
update-initramfs: Generating /boot/initrd.img-5.8.0-48-generic
Using config file '/etc/zipl.conf'
Building bootmap in '/boot'
Adding IPL section 'ubuntu' (default)
Preparing boot device: dasda (af8a).
Done.
root@m35lp41:~# cat /sys/devices/qeth/0.0.bd00/buffer_count
64
root@m35lp41:~# reboot
packet_write_wait: Connection to UNKNOWN port 65535: Broken pipe
[vineeth.vijayan@oc6887364776 ~]$ ssh m35lp41.lnxne.boe
channel 0: open failed: connect failed: Connection refused
stdio forwarding failed
ssh_exchange_identification: Connection closed by remote host
[vineeth.vijayan@oc6887364776 ~]$ ssh m35lp41.lnxne.boe
channel 0: open failed: connect failed: Connection refused
stdio forwarding failed
ssh_exchange_identification: Connection closed by remote host
[vineeth.vijayan@oc6887364776 ~]$ ssh m35lp41.lnxne.boe
<email address hidden>'s password:
Welcome to Ubuntu 20.10 (GNU/Linux 5.8.0-48-generic s390x)

* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage

System information as of Wed Mar 31 06:43:14 AM UTC 2021

System load: 0.31 Processes: 207
Usage of /: 6.9% of 20.18GB Users logged in: 0
Memory usage: 2% IPv4 address for encbd00: 172.18.60.41
Swap usage: 0%

0 updates can be installed immediately.
0 of these updates are security updates.

**************************************************************
* *
* The system was installed using *
* TESSIA *
* Task Execution Supporter and System Installation Assistant *
* *
* Open source repo: https://gitlab.com/tessia-project *
* (GitHub mirror: https://github.com/tessia-project) *
* *
* Documentation is located here: *
* https://gitlab.com/tessia-project/tessia/-/tree/master/doc *
* *
* To create custom templates for auto installation see: *
* > tess autotemplate add --help *
* *
**************************************************************

Last login: Wed Mar 31 06:38:45 2021 from 172.18.0.1
root@m35lp41:~#
root@m35lp41:~# cat /sys/devices/qeth/0.0.bd00/buffer_count
128
----

And the result looks good to me.
Thank you.