------- Comment From y...@cn.ibm.com 2020-03-12 22:51 EDT------- We are running it on z15. We have other distros running on this env with FBA. We don't see that issue.
Here is an additional info I just found out. If I switch the kernel back to 4.4.0-174-generic, I don't see those errors anymore. (In reply to comment #7) > I tried to re-create the situation over here. > > I have a z/VM 6.4: > q cplevel > z/VM Version 6 Release 4.0, service level 1901 (64-bit) > Generated at 06/14/19 14:15:49 UTC > > and there is a VM guest running from the time I did 18.04.4 regression > testing, hence it's up since quite some time: > buntu@zbox:~$ uptime > 05:16:47 up 36 days, 22:17, 1 user, load average: 0.00, 0.00, 0.00 > but has an older kernel: > ubuntu@zbox:~$ lsb_release -a > No LSB modules are available. > Distributor ID: Ubuntu > Description: Ubuntu 18.04.4 LTS > Release: 18.04 > Codename: bionic > ubuntu@zbox:~$ uname -a > Linux zbox 4.15.0-76-generic #86-Ubuntu SMP Fri Jan 17 17:23:44 UTC 2020 > s390x s390x s390x GNU/Linux > ubuntu@zbox:~$ > > It has 4 FBA devices: > $ lszdev | grep yes > dasd-eckd 0.0.0200 yes yes dasda > dasd-fba 0.0.0101 yes yes dasdc > dasd-fba 0.0.0102 yes yes dasdb > dasd-fba 0.0.0103 yes yes dasdd > dasd-fba 0.0.0104 yes yes dasde > qeth 0.0.0600:0.0.0601:0.0.0602 yes yes enc600 > generic-ccw 0.0.0009 yes yes > > I had a look at the logs (dmesg,syslog) and couldn't find any problems with > FBA devices: > ubuntu@zbox:~$ dmesg -xT -l emerg,alert,crit,err > ubuntu@zbox:~$ grep 'error\|fail\|crash\|warn\|crit' /var/log/syslog > Mar 12 06:57:46 zbox systemd-resolved[371]: Server returned error NXDOMAIN, > mitigating potential DNS violation DVE-2018-0001, retrying transaction with > reduced feature level UDP. > Mar 12 09:21:16 zbox systemd-resolved[371]: Server returned error NXDOMAIN, > mitigating potential DNS violation DVE-2018-0001, retrying transaction with > reduced feature level UDP. > ubuntu@zbox:~$ > > So I upgraded the system to the latest package and kernel level: > ubuntu@zbox:~$ sudo apt -y -q update && sudo apt -y -q full-upgrade && sudo > apt autoremove --purge > ubuntu@zbox:~$ lsb_release -r > Release: 18.04 > ubuntu@zbox:~$ uname -a > Linux zbox 4.15.0-88-generic #88-Ubuntu SMP Tue Feb 11 20:11:02 UTC 2020 > s390x s390x s390x GNU/Linux > ubuntu@zbox:~$ > ubuntu@zbox:~$ dmesg -xT -l emerg,alert,crit,err > > And I still cannot find any FBA issues: > ubuntu@zbox:~$ grep 'error\|fail\|crash\|warn\|crit' /var/log/syslog > Mar 12 06:57:46 zbox systemd-resolved[371]: Server returned error NXDOMAIN, > mitigating potential DNS violation DVE-2018-0001, retrying transaction with > reduced feature level UDP. > Mar 12 09:21:16 zbox systemd-resolved[371]: Server returned error NXDOMAIN, > mitigating potential DNS violation DVE-2018-0001, retrying transaction with > reduced feature level UDP. > ubuntu@zbox:~$ > > You mentioned that things might happen under load, so I created and copied > files with dd, and ran bonnie++ to create some more disk utilization and > even ran partially stress-ng in parallel, > but still cannot recreate the FBA issue. > > In other words I was not able to recreate the problem. I work on a z13 with > a DS8870. > What about your system? Did you double checked that there are no issues in > the environment and the FBA definition? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1867118 Title: dasd_fba io error and kernel panic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1867118/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
