Bug 1339281
| Summary: | Enable CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Vitaly Kuznetsov <vkuznets> |
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
| Status: | CLOSED RAWHIDE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | rawhide | CC: | gansalmon, hannsj_uhl, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-05-26 19:13:24 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: | |||
I've enabled this in today's rawhide. It should be available tomorrow. |
Currently all newly hot-plugged memory remains in 'offline' state and manual actions are required to bring it online. Some other distributions like RHEL carry special udev rule with them: SUBSYSTEM=="memory", ACTION=="add", ATTR{state}=="offline", ATTR{state}="online" but this is not ideal and the rule is missing in Fedora. To make things work automagically CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE option was introduced. I'd like to have it enabled in Fedora. For additional info please see kernel commits 31bc3858ea3ebcc3157b3f5f0e624c5962f5a7a6, 8604d9e534a3e662600e288bcfd1a5acd2763d28, and 86dd995d63241039e0ad9123f9b424013c611510.