Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 1071988

Summary: Fatal error during migration within engine logs.
Product: [Retired] oVirt Reporter: Nikolai Sednev <nsednev>
Component: ovirt-engine-coreAssignee: bugs <bugs>
Status: CLOSED CANTFIX QA Contact: Pavel Stehlik <pstehlik>
Severity: low Docs Contact:
Priority: unspecified    
Version: 3.4CC: acathrow, amureini, gklein, iheim, michal.skrivanek, nsednev, yeylon
Target Milestone: ---   
Target Release: 3.4.1   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: virt
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-04-07 14:08:15 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
engine and vdsm logs. none

Description Nikolai Sednev 2014-03-03 16:05:43 UTC
Created attachment 870009 [details]
engine and vdsm logs.

Description of problem:
Fatal error during migration within engine logs.

Version-Release number of selected component (if applicable):

ovirt-engine-3.4.0-0.7.beta2.el6.noarch
qemu-kvm-rhev-0.12.1.2-2.415.el6_5.4.x86_64
libvirt-0.10.2-29.el6_5.3.x86_64
sanlock-2.8-1.el6.x86_64

How reproducible:
Always

Steps to Reproduce:
1.Assemble cluster of two hosts and one up and running VM.
2.Start live VM migration from host a to host b.
3.During migration of host a to b, while process still running, cut off the host b using iptables on host a, so host b will become unreachable.
4.Disable and enable several times iptables rule defined on host a.
5.Expect for fatal error on engine, within it's logs.

Actual results:
Fatal error happens, which is not informative and should be because of connectivity issue, as host b is unreachable.

Expected results:
Host b is unreachable, hence migration failed.

Additional info:
engine, vdsm logs.
Please check time in log around 2014-03-03 17:24:46.

Comment 1 Sandro Bonazzola 2014-03-04 09:29:11 UTC
This is an automated message.
Re-targeting all non-blocker bugs still open on 3.4.0 to 3.4.1.

Comment 2 Allon Mureinik 2014-03-26 10:08:58 UTC
This bug is about VM migration, not storage migration

Comment 3 Michal Skrivanek 2014-04-03 13:10:45 UTC
"5.Expect for fatal error on engine, within it's logs."

so you're looking at logs or are you concerned about the even log in UI?

Comment 4 Nikolai Sednev 2014-04-03 14:28:55 UTC
(In reply to Michal Skrivanek from comment #3)
> "5.Expect for fatal error on engine, within it's logs."
> 
> so you're looking at logs or are you concerned about the even log in UI?

I'm concerned about not informative error within WEBUI and the log "fatal error", which should not happen at all, if happens, should be precise.

Actual results:
Fatal error happens, which is not informative and should be because of connectivity issue, as host b is unreachable.

Expected results:
Host b is unreachable, hence migration failed.

Comment 5 Michal Skrivanek 2014-04-03 14:43:49 UTC
we can't reliably show much more details. We've discussed that before that it's not really doable, there are too many components where things go wrong. 

Moreover I'm not sure you attached the right logs, I see few migrations, succeeding.

Comment 6 Nikolai Sednev 2014-04-03 15:01:39 UTC
OK, If you think it's OK, then I don't have nothing to add on this.
If "fatal error" is OK with the customer... I'm not sure.
The logs provided received during described scenario flow, if something is missing, please assign on storage team for reproduction.

Comment 7 Michal Skrivanek 2014-04-07 14:08:15 UTC
it's just that we can't provide anything better...