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Bug 876555

Summary: [vdsm] VDSM failed to cope with deadlock in Libvirt (getVdsCaps fails on timeout and host is not functional)
Product: Red Hat Enterprise Virtualization Manager Reporter: vvyazmin <vvyazmin>
Component: vdsmAssignee: Barak <bazulay>
Status: CLOSED NOTABUG QA Contact: vvyazmin <vvyazmin>
Severity: urgent Docs Contact:
Priority: unspecified    
Version: unspecifiedCC: abaron, bazulay, dyasny, hateya, iheim, lpeer, ykaul
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: infra
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-03-01 10:51:28 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Infra RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
## Logs vdsm, rhevm none

Description vvyazmin@redhat.com 2012-11-14 13:06:15 UTC
Created attachment 644800 [details]
## Logs vdsm, rhevm

Description of problem: VDSM failed cope with deadlock in Libvirt

Version-Release number of selected component (if applicable):
RHEVM 3.1 - SI24.1

RHEVM: rhevm-3.1.0-28.el6ev.noarch
VDSM: vdsm-4.9.6-42.0.el6_3.x86_64
LIBVIRT: libvirt-0.9.10-21.el6_3.5.x86_64
QEMU & KVM: qemu-kvm-rhev-0.12.1.2-2.295.el6_3.5.x86_64
SANLOCK: sanlock-2.3-4.el6_3.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Create iSCSI DC with 2 hosts
2. Create VM with multiple disks on multiple storage domains
3. Run VM on HSM
4. Install OS (RHEL 6.3)
5. Install RHEV Agent (Guest Agent)
6. Create a snapshot
7. Snapshot --> Preview
8. Snapshot --> Commit
9. Snapshot --> Delete snapshot 
10. Power-on
 VM, OS stuck on boot
11. Failed Power OFF
12.  Failed power-on  a new created VM's in same DC
  
Actual results:
Libvirt enter in deadlock.
VDSM failed cope with deadlock in Libvirt

Expected results:
VDSM should handle with those senarios
VDSM should restart Libvert if Libvirt enter to deadlock.

Comment 2 RHEL Program Management 2012-12-14 08:50:55 UTC
This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.