Bug 2116529
| Summary: | [RHOS 17 beta known issue] For live-migration to execute with post copy need to enable vm.unprivileged_userfaultfd | ||
|---|---|---|---|
| Product: | Red Hat OpenStack | Reporter: | Artom Lifshitz <alifshit> |
| Component: | documentation | Assignee: | RHOS Documentation Team <rhos-docs> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | RHOS Documentation Team <rhos-docs> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 17.0 (Wallaby) | CC: | bdobreli, dasmith, eglynn, igallagh, jamsmith, jhakimra, kchamart, sbauza, sgordon, vromanso |
| Target Milestone: | beta | Keywords: | Regression, Triaged |
| Target Release: | 17.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Known Issue | |
| Doc Text: |
Live migration fails when executing the QEMU command `migrate-set-capabilities`. This is because the post-copy feature that is enabled by default is not supported.
+
Choose one of the following workaround options:
* Workaround Option 1: Set `vm.unprivileged_userfaultfd = 1` on Compute nodes to enable post-copy on the containerized libvirt:
** Make a new file: `$ touch /etc/sysctl.d/50-userfault.conf`.
** Add `vm.unprivileged_userfaultfd = 1` to `/etc/sysctl.d/50-userfault.conf`.
** Load the file: `$ sysctl -p /etc/sysctl.d/50-userfault.conf`.
* Workaround Option 2: Set the `sysctl` flag through director, by setting the `ExtraSysctlSettings` parameter.
* Workaround Option 3: Disable the post-copy feature completely, by setting the `NovaLiveMigrationPermitPostCopy` parameter to `false`.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-09-12 15:19:12 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: | |||
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Comment 7
Artom Lifshitz
2022-08-10 18:53:27 UTC
The release notes automation will pick up BZs with the right flags even if they're closed. With the doc text done and requires_doc_text set to +, we can close this. |