[ovirt-devel] Re: [VDSM] all test passed, build failed with "tar: journal/b087148aba6d49b9bbef488e52a48752/system.journal: file changed as we read it"

On Sun, Dec 16, 2018 at 3:31 PM Barak Korren <bkorren(a)redhat.com&gt; wrote: > > > On Sun, 16 Dec 2018 at 14:44, Edward Haas <edwardh(a)redhat.com&gt; wrote: > >> >> >> On Sun, Dec 16, 2018 at 2:40 PM Nir Soffer <nsoffer(a)redhat.com&gt; wrote: >> >>> On Sun, Dec 16, 2018 at 2:21 PM Nir Soffer <nsoffer(a)redhat.com&gt; wrote: >>> >>>> On Sun, Dec 2, 2018 at 8:18 AM Edward Haas <edwardh(a)redhat.com&gt; wrote: >>>> >>>>> >>>>> >>>>> On Sat, Dec 1, 2018 at 11:10 PM Nir Soffer <nsoffer(a)redhat.com&gt; >>>>> wrote: >>>>> >>>>>> On Thu, Nov 29, 2018 at 11:21 AM Edward Haas <edwardh(a)redhat.com&gt; >>>>>> wrote: >>>>>> >>>>>>> >>>>>>> >>>>>>> On Thu, Nov 29, 2018 at 10:41 AM Edward Haas <edwardh(a)redhat.com&gt; >>>>>>> wrote: >>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> On Wed, Nov 28, 2018 at 8:12 PM Nir Soffer <nsoffer(a)redhat.com&gt; >>>>>>>> wrote: >>>>>>>> >>>>>>>>> We have this failure that pops randomly: >>>>>>>>> >>>>>>>>> 1. All tests pass >>>>>>>>> >>>>>>>>> *00:13:13.284* ___________________________________ summary ____________________________________*00:13:13.285* tests: commands succeeded*00:13:13.286* storage-py27: commands succeeded*00:13:13.286* storage-py36: commands succeeded*00:13:13.286* lib-py27: commands succeeded*00:13:13.287* lib-py36: commands succeeded*00:13:13.288* network-py27: commands succeeded*00:13:13.290* network-py36: commands succeeded*00:13:13.291* virt-py27: commands succeeded*00:13:13.292* virt-py36: commands succeeded*00:13:13.293* congratulations :) >>>>>>>>> >>>>>>>>> >>>>>>>>> 2. But we fail to collect logs at the end >>>>>>>>> >>>>>>>>> *00:14:35.992* ##########################################################*00:14:35.995* ## Wed Nov 28 17:39:50 UTC 2018 Finished env: fc28:fedora-28-x86_64*00:14:35.996* ## took 764 seconds*00:14:35.997* ## rc = 1*00:14:35.997* ##########################################################*00:14:36.009* ##! ERROR vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*00:14:36.010* ##! Last 20 log entries: /tmp/mock_logs.Lcop4ZOq/script/stdout_stderr.log*00:14:36.011* ##!*00:14:36.012* journal/b087148aba6d49b9bbef488e52a48752/system.journal*00:14:36.013* tar: journal/b087148aba6d49b9bbef488e52a48752/system.journal: file changed as we read it*00:14:36.014* journal/b087148aba6d49b9bbef488e52a48752/user-1000.journal*00:14:36.015* lastlog*00:14:36.015* libvirt/*00:14:36.015* libvirt/lxc/*00:14:36.015* libvirt/libxl/*00:14:36.016* libvirt/qemu/*00:14:36.016* libvirt/qemu/LiveOS-f920001d-be4e-47ea-ac26-72480fd5be87.log*00:14:36.017* libvirt/uml/*00:14:36.017* ovirt-guest-agent/*00:14:36.017* ovirt-guest-agent/ovirt-guest-agent.log*00:14:36.017* README*00:14:36.018* samba/*00:14:36.018* samba/old/*00:14:36.018* sssd/*00:14:36.018* tallylog*00:14:36.018* wtmp*00:14:36.018* Took 678 seconds*00:14:36.018* ===================================*00:14:36.019* ##!*00:14:36.019* ##! ERROR ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*00:14:36.019* ##!######################################################## >>>>>>>>> >>>>>>>>> >>>>>>>>> This looks like an issue with vdsm check-patch.sh: >>>>>>>>> >>>>>>>>> function collect_logs { >>>>>>>>> res=$? >>>>>>>>> [ "$res" -ne 0 ] && echo "*** err: $res" >>>>>>>>> cd /var/log >>>>>>>>> tar -cvzf "$EXPORT_DIR/mock_varlogs.tar.gz" * >>>>>>>>> cd /var/host_log >>>>>>>>> tar -cvzf "$EXPORT_DIR/host_varlogs.tar.gz" * >>>>>>>>> } >>>>>>>>> >>>>>>>>> trap collect_logs EXIT >>>>>>>>> >>>>>>>>> Seems that tar fail to collect log if the log is modified while >>>>>>>>> copied, which makes sense. >>>>>>>>> >>>>>>>>> We can ignore errors in tar, since log collection should not fail >>>>>>>>> the build, but I think >>>>>>>>> a better solution is to avoid collecting any logs since vdsm >>>>>>>>> writes its own logs during >>>>>>>>> tests - all the info must be in vdsm log. >>>>>>>>> >>>>>>>>> Here is the list of collected logs: >>>>>>>>> >>>>>>>>> *00:13:47.280* + tar -cvzf /home/jenkins/workspace/vdsm_master_check-patch-fc28-x86_64/vdsm/exported-artifacts/mock_varlogs.tar.gz btmp dnf.librepo.log dnf.log dnf.rpm.log faillog glusterfs hawkey.log journal lastlog libvirt openvswitch README tallylog vdsm_tests.log wtmp yum.log*00:13:47.285* btmp*00:13:47.285* dnf.librepo.log*00:13:47.299* dnf.log*00:13:47.309* dnf.rpm.log*00:13:47.310* faillog*00:13:47.311* glusterfs/*00:13:47.312* hawkey.log*00:13:47.313* journal/*00:13:47.313* lastlog*00:13:47.315* libvirt/*00:13:47.315* libvirt/qemu/*00:13:47.316* openvswitch/*00:13:47.317* openvswitch/ovs-vswitchd.log*00:13:47.318* openvswitch/ovsdb-server.log*00:13:47.319* README*00:13:47.320* tallylog*00:13:47.321* vdsm_tests.log*00:13:47.342* wtmp*00:13:47.343* yum.log*00:13:47.349* + cd /var/host_log*00:13:47.350* + tar -cvzf /home/jenkins/workspace/vdsm_master_check-patch-fc28-x86_64/vdsm/exported-artifacts/host_varlogs.tar.gz anaconda audit boot.log btmp chrony cloud-init.log cloud-init-output.log cron dnf.librepo.log dnf.log dnf.rpm.log firewalld glusterfs hawkey.log journal lastlog libvirt ovirt-guest-agent README samba sssd tallylog wtmp*00:13:47.356* anaconda/*00:13:47.356* anaconda/ifcfg.log*00:13:47.357* anaconda/ks-script-l5qnynnj.log*00:13:47.358* anaconda/storage.log*00:13:47.359* anaconda/program.log*00:13:47.395* anaconda/ks-script-b5_08tmo.log*00:13:47.396* anaconda/ks-script-6uks8bp3.log*00:13:47.397* anaconda/hawkey.log*00:13:47.398* anaconda/syslog*00:13:47.406* anaconda/journal.log*00:13:47.449* anaconda/dnf.librepo.log*00:13:47.458* anaconda/packaging.log*00:13:47.465* anaconda/dbus.log*00:13:47.466* anaconda/anaconda.log*00:13:47.467* anaconda/ks-script-slrcz39_.log*00:13:47.503* audit/*00:13:47.504* audit/audit.log.3*00:13:47.657* audit/audit.log.2*00:13:47.814* audit/audit.log.1*00:13:47.981* audit/audit.log*00:13:48.008* audit/audit.log.4*00:13:48.155* boot.log*00:13:48.156* btmp*00:13:48.157* chrony/*00:13:48.159* cloud-init.log*00:13:48.159* cloud-init-output.log*00:13:48.161* cron*00:13:48.162* dnf.librepo.log*00:13:49.930* dnf.log*00:13:51.335* dnf.rpm.log*00:13:51.421* firewalld*00:13:51.423* glusterfs/*00:13:51.424* hawkey.log*00:13:51.704* journal/*00:13:51.708* journal/b087148aba6d49b9bbef488e52a48752/*00:13:51.709* journal/b087148aba6d49b9bbef488e52a48752/system.journal*00:13:55.817* tar: journal/b087148aba6d49b9bbef488e52a48752/system.journal: file changed as we read it*00:13:55.819* journal/b087148aba6d49b9bbef488e52a48752/user-1000.journal*00:13:55.915* lastlog*00:13:55.923* libvirt/*00:13:55.924* libvirt/lxc/*00:13:55.926* libvirt/libxl/*00:13:55.927* libvirt/qemu/*00:13:55.928* libvirt/qemu/LiveOS-f920001d-be4e-47ea-ac26-72480fd5be87.log*00:13:55.929* libvirt/uml/*00:13:55.930* ovirt-guest-agent/*00:13:55.930* ovirt-guest-agent/ovirt-guest-agent.log*00:13:55.932* README*00:13:55.933* samba/*00:13:55.933* samba/old/*00:13:55.935* sssd/*00:13:55.935* tallylog*00:13:55.935* wtmp >>>>>>>>> >>>>>>>>> >>>>>>>>> Most if not all are lot relevant to vdsm tests, and should not be >>>>>>>>> collected. >>>>>>>>> >>>>>>>>> This was added in: >>>>>>>>> >>>>>>>>> commit 9c9c17297433e5a5a49aa19cde10b206e7db61e9 >>>>>>>>> Author: Edward Haas <edwardh(a)redhat.com&gt; >>>>>>>>> Date: Tue Apr 17 10:53:11 2018 +0300 >>>>>>>>> >>>>>>>>> automation: Collect logs even when check-patch fails >>>>>>>>> >>>>>>>>> Change-Id: Idfe07ce6fc55473b1db1d7f16754f559cc5c345a >>>>>>>>> Signed-off-by: Edward Haas <edwardh(a)redhat.com&gt; >>>>>>>>> >>>>>>>>> Reviewed in: >>>>>>>>> https://gerrit.ovirt.org/c/90370 >>>>>>>>> >>>>>>>>> Edward, can you explain why do we need to collect logs during >>>>>>>>> check-patch, >>>>>>>>> and why do we need to collect all the logs in the system? >>>>>>>>> >>>>>>>> >>>>>>>> check-patch are running unit and integrations tests. >>>>>>>> The integration tests are touching the OS and other packages (like >>>>>>>> openvswitch). >>>>>>>> It was added so we can debug why tests failed. >>>>>>>> >>>>>>>> I guess we can now separate the unit and integration tests, but it >>>>>>>> will not solve >>>>>>>> the problem presented here. >>>>>>>> Failing to collect the logs silently sounds a good enough solution >>>>>>>> to me. >>>>>>>> >>>>>>> >>>>>>> Barak suggested to just exclude the journal: >>>>>>> https://gerrit.ovirt.org/#/c/95850/ >>>>>>> >>>>>> >>>>>> This is fixed now, thanks! >>>>>> >>>>> >>>> Not fixed yet, we still fail collecting /var/host_log: >>>> >>>> + cd /var/host_log >>>> >>>> + tar --exclude 'journal/*' -czf >>>> /home/jenkins/workspace/vdsm_standard-check-patch/vdsm/exported-artifacts/mock_varlogs.tar.gz >>>> btmp faillog glusterfs grubby_prune_debug lastlog libvirt openvswitch swtpm >>>> tallylog vdsm_tests.log wtmp yum.log >>>> + cd /var/host_log >>>> + tar -czf >>>> /home/jenkins/workspace/vdsm_standard-check-patch/vdsm/exported-artifacts/host_varlogs.tar.gz >>>> anaconda audit boot.log boot.log-20181210 boot.log-20181211 >>>> boot.log-20181212 boot.log-20181213 boot.log-20181214 boot.log-20181215 >>>> boot.log-20181216 btmp btmp-20181201 cron cron-20181126 cron-20181202 >>>> cron-20181210 cron-20181216 dmesg dmesg.old firewalld glusterfs grubby >>>> grubby_prune_debug httpd journal lastlog libvirt maillog maillog-20181126 >>>> maillog-20181202 maillog-20181210 maillog-20181216 messages ntpstats >>>> ovirt-engine ovirt-guest-agent ovirt-imageio-proxy ppp puppet qemu-ga >>>> secure spooler spooler-20181126 spooler-20181202 spooler-20181210 >>>> spooler-20181216 tallylog tuned wpa_supplicant.log wtmp yum.log >>>> yum.log-20170101 yum.log-20180101 >>>> tar: journal/d2b3276bfc6c7a4e95ce6b2b9b5d0f20/system.journal: file >>>> changed as we read it >>>> >>>> >>>> https://jenkins.ovirt.org/blue/rest/organizations/jenkins/pipelines/vdsm_... >>>> >>>> Copying the binary logs from journal is not the way to copy logs. >>>> >>>> If we need the host journal, it should be collected by CI infra using >>>> journalctl. >>>> >>> >> But these are collected by the CI, not us. We just take what was already >> collected. >> Gal, Barak, can you explain this? >> > > As you can see in the code Nir patched, We don't collect it, you do. > We collected what was already collected by CI. Who is collecting those logs into host_log?

> > >> >> >>> This should fix the issue: >>> https://gerrit.ovirt.org/c/96244/ >>> >>> >>>> >>>> Nir >>>> >>>>> >>>>> >>>>>> Any reason why we exclude journal only for /var/log, and do collect >>>>>> the binary journal >>>>>> from /var/host_log? I guess it can fail in the same way. >>>>>> >>>>> >>>>> As far as I know, /vatests/integration/vlan_test.pyr/host_log is >>>>> collected by the CI and placed (copy) there. >>>>> It does not collect everything, therefore we added the second one. >>>>> >>>>> >>>>>> If we collect logs for integration tests, the most important log is >>>>>> the journal, and now >>>>>> we skip it. >>>>>> >>>>> >>>>> I think it appears in /var/host_log. >>>>> >>>>> >>>>>> >>>>>> We can get the journal in a reliable way like this: >>>>>> >>>>>> journalctl --since build-date > /tmp/journal.log >>>>>> >>>>>> Nir >>>>>> >>>>>>> > > -- > Barak Korren > RHV DevOps team , RHCE, RHCi > Red Hat EMEA > redhat.com | TRIED. TESTED. TRUSTED. | redhat.com/trusted >