Ubuntu on IBM z Systems

  1. Bug #1892367
  2. Comment #18

Comment 18 for bug 1892367

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

------- Comment From <email address hidden> 2021-03-03 03:55 EDT-------
Tested the latest ubuntu21.04

root@m35lp41:~# cat /proc/version
Linux version 5.10.0-14-generic (buildd@bos02-s390x-005) (gcc (Ubuntu 10.2.1-6ubuntu2) 10.2.1 20210121, GNU ld (GNU Binutils for Ubuntu) 2.36) #15-Ubuntu SMP Fri Jan 29 15:04:37 UTC 2021
root@m35lp41:~# ls /sys/devices/qeth/0.0.bd00/buffer_count
/sys/devices/qeth/0.0.bd00/buffer_count
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-5.10.0-14-generic

Using config file '/etc/zipl.conf'
Building bootmap in '/boot'
Adding IPL section 'ubuntu' (default)
Preparing boot device: dasda (af8a).
Done.
root@m35lp41:~#
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
<email address hidden>'s password:
Welcome to Ubuntu Hirsute Hippo (development branch) (GNU/Linux 5.10.0-14-generic s390x)

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

System information as of Wed Mar 3 08:23:18 AM UTC 2021

System load: 0.16 Memory usage: 2% Processes: 204
Usage of /: 7.5% of 20.18GB Swap usage: 0% Users logged in: 0

=> There were exceptions while processing one or more plugins. See
/var/log/landscape/sysinfo.log for more information.

22 updates can be installed immediately.
0 of these updates are security updates.
To see these additional updates run: apt list --upgradable

Last login: Wed Mar 3 08:14:55 2021 from 172.18.0.1
root@m35lp41:~#
root@m35lp41:~# cat /sys/devices/qeth/0.0.bd00/buffer_count
128

Looks good to me.