Bug 1514930
| Summary: | The doc of the matrix about configuration file handling in migration is not correct. | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Lili Zhu <lizhu> | ||||
| Component: | libvirt | Assignee: | Jiri Denemark <jdenemar> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Lili Zhu <lizhu> | ||||
| Severity: | low | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 7.5 | CC: | dyuan, lmiksik, rbalakri, xuzhang, zpeng | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | libvirt-3.9.0-6.el7 | Doc Type: | If docs needed, set a value | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2018-04-10 11:00:58 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: |
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Patch sent upstream for review: https://www.redhat.com/archives/libvir-list/2017-December/msg00281.html Fixed upstream by
commit 2c01e4febcd161226ce707892d8e53f4e66f708f
Refs: v3.10.0-39-g2c01e4febc
Author: Jiri Denemark <jdenemar>
AuthorDate: Fri Dec 8 10:31:38 2017 +0100
Commit: Jiri Denemark <jdenemar>
CommitDate: Fri Dec 8 15:50:52 2017 +0100
migration.html: Clarify configuration file handling docs
Migration never removes any configuration files on the destination host.
Thus when the domain is already defined on the destination, it will stay
persistent even after migration without --persist.
https://bugzilla.redhat.com/show_bug.cgi?id=1514930
Signed-off-by: Jiri Denemark <jdenemar>
Verified this bug with libvirt-3.9.0-6.el7.x86_64
Now the issues in the bug description have been modified.
For the new added description, taking Row 5 and Row 7 for example,
Transient N Y N N Persistent N Y
(unchanged dest config)
Transient N Y N Y Persistent N Y
(replaced with source)
verification procedures are as follows:
For Row 5:
1. on source host, prepare a transient guest
# virsh list --transient
Id Name State
----------------------------------------------------
6 mig15 running
# virsh dumpxml mig15
...
<video>
<model type=**'cirrus'** vram='16384' heads='1' primary='yes'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
...
2. on dest host, prepare a guest with configuration file
# virsh list --all
Id Name State
----------------------------------------------------
- mig15 shut off
# virsh dumpxml mig15
<video>
<model type=**'qxl'** ram='65536' vram='16384' vgamem='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
3. migrate the guest to dest host
# virsh migrate mig15 --live qemu+ssh://10.66.4.117/system
4.check the guest status
# virsh list --persistent
Id Name State
----------------------------------------------------
9 mig15 running
# virsh dumpxml mig15 --inactive
<video>
<model type=**'qxl'** ram='65536' vram='16384' vgamem='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
As you can see, the config file of guest on target is not been changed after migration. Row 6, 13, 14 are the same with the case of Row 5.
For Row 7:
Step 1-3 are the same with the ones in the verification procedures of Row 5. After migration, check the status on dest host
# virsh dumpxml mig15 --inactive
...
<video>
<model type=**'cirrus'** vram='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
...
Now the config file of guest on target has been replaced with the source config file. Row 8, 15, 16 are the same with the case of Row 7.
As the results match with the expectation, move it to verified.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2018:0704 |
Created attachment 1355176 [details] The matrix about configuration file handling in migration Description of problem: Version-Release number of selected component (if applicable): libvirt-3.9.0-2.el7.x86_64 Steps to Reproduce: Now Row 5 and Row 6 of the matrix about configuration file handling in all possible state and flag combinations are as follows(refer to the attached file): Transient N Y N N Transient N N Transient N Y Y N Transient N N Expected results: Before migration, if the Dest config is Y, then after migration, the target type is persistent, and the Dest config is Y. It should be: Transient N Y N N Persistent N Y Transient N Y Y N Persistent N Y