Bug 658141
| Summary: | [libvirt] libvirt crash on multiple migration [Segmentation fault] | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | RHEL Program Management <pm-rhel> |
| Component: | libvirt | Assignee: | Daniel Veillard <veillard> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 6.1 | CC: | antillon.maurizio, bazulay, berrange, cpelland, dallan, danken, dyuan, eblake, hateya, iheim, jdenemar, kxiong, mgoldboi, mjenner, plyons, pm-eus, veillard, weizhan, xen-maint, yoyzhang |
| Target Milestone: | rc | Keywords: | TestBlocker, ZStream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-0.8.1-27.el6_0.1 | Doc Type: | Bug Fix |
| Doc Text: |
A race condition where an application could query block information on a virtual guest that had just been migrated away could occur when migrating a guest. As a result, the libvirt service crashed. The libvirt application now verifies that a guest exists before attempting to start any monitoring operations.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-04-14 16:18:34 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 638285 | ||
| Bug Blocks: | |||
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Description
RHEL Program Management
2010-11-29 14:01:36 UTC
Patches built into libvirt-0.8.1-27.el6_0.1 Haim, could you assist zhanghaiyan in verification? zhanghaiyan, please consider testing migration with much more than 8 guests (20?) doing concurrent bidirectional migration (A-->B while B-->A). This has exposed more issues in the past. Verified with
libvirt: libvirt-0.8.1-27.el6_0.3
kernel: kernel-2.6.32-71.16.1.el6
qemu-kvm: qemu-kvm-0.12.1.2-2.113.el6_0.6
in plain libvirt environment.
1. Config migration enviroment in source host A and target host B
# iptables -F
# mount 10.66.90.121:/vol/S3/libvirtmanual /mnt
2. Define&Start 8 guests
3. Migrate 8 guests to target host B
# for i in `virsh list |grep running |awk '{print $2}'`; do virsh migrate --live $i qemu+ssh://10.66.93.59/system; done
4. Migrate 8 guests back to source host A
Actual result:
Both step 3&4 migration successfully without error and all the guests works
well after migration
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0446.html
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
New Contents:
A race condition where an application could query block information on a virtual guest that had just been migrated away could occur when migrating a guest. As a result, the libvirt service crashed. The libvirt application now verifies that a guest exists before attempting to start any monitoring operations.
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