Bug 1525182
| Summary: | Should rebuild QEMU capabilities on KVM hosts if kernel version changes | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Paolo Bonzini <pbonzini> |
| Component: | libvirt | Assignee: | Jiri Denemark <jdenemar> |
| Status: | CLOSED ERRATA | QA Contact: | Luyao Huang <lhuang> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.5 | CC: | dyuan, lmen, lmiksik, mtessun, pbonzini, rbalakri, xuzhang, yalzhang, zpeng |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-3.9.0-9.el7 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-04-10 11:02:08 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: | |||
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Description
Paolo Bonzini
2017-12-12 17:46:36 UTC
Patch sent upstream for review: https://www.redhat.com/archives/libvir-list/2018-January/msg00657.html The patch is now pushed upstream as
commit 52b7d910b6b0ceeff50866774adba6efab55b2c0
Refs: v4.0.0-6-g52b7d910b6
Author: Jiri Denemark <jdenemar>
AuthorDate: Mon Jan 22 11:37:04 2018 +0100
Commit: Jiri Denemark <jdenemar>
CommitDate: Mon Jan 22 14:11:58 2018 +0100
qemu: Refresh caps cache after booting a different kernel
Whenever a different kernel is booted, some capabilities related to KVM
(such as CPUID bits) may change. We need to refresh the cache to see the
changes.
Signed-off-by: Jiri Denemark <jdenemar>
Reviewed-by: Daniel P. Berrange <berrange>
Verify this bug with libvirt-3.9.0-9.el7.x86_64: 1. check caps file timestamp: # ll /var/cache/libvirt/qemu/capabilities/3c76bc41d59c0c7314b1ae8e63f4f765d2cf16abaeea081b3ca1f5d8732f7bb1.xml -rw-------. 1 root root 51770 Jan 23 21:11 /var/cache/libvirt/qemu/capabilities/3c76bc41d59c0c7314b1ae8e63f4f765d2cf16abaeea081b3ca1f5d8732f7bb1.xml 2. check the kernel version in caps file: # cat /var/cache/libvirt/qemu/capabilities/3c76bc41d59c0c7314b1ae8e63f4f765d2cf16abaeea081b3ca1f5d8732f7bb1.xml ... <kernelVersion>3.10.0-837.el7.x86_64 #1 SMP Tue Jan 23 13:31:59 UTC 2018</kernelVersion> ... 3. install a new kernel and reboot: 4. check the caps file timestamp: # ll /var/cache/libvirt/qemu/capabilities/3c76bc41d59c0c7314b1ae8e63f4f765d2cf16abaeea081b3ca1f5d8732f7bb1.xml -rw-------. 1 root root 51770 Jan 23 21:28 /var/cache/libvirt/qemu/capabilities/3c76bc41d59c0c7314b1ae8e63f4f765d2cf16abaeea081b3ca1f5d8732f7bb1.xml 5. check the kernel version in caps file: <kernelVersion>3.10.0-831.el7.x86_64 #1 SMP Wed Jan 17 15:59:59 EST 2018</kernelVersion> 6. restart libvirtd and recheck the caps file timestamp: # service libvirtd restart Redirecting to /bin/systemctl restart libvirtd.service # ll /var/cache/libvirt/qemu/capabilities/3c76bc41d59c0c7314b1ae8e63f4f765d2cf16abaeea081b3ca1f5d8732f7bb1.xml -rw-------. 1 root root 51770 Jan 23 21:28 /var/cache/libvirt/qemu/capabilities/3c76bc41d59c0c7314b1ae8e63f4f765d2cf16abaeea081b3ca1f5d8732f7bb1.xml 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 |