Bug 1450072
| Summary: | Libvirt provides a confusing error message on a mediated device hotplug | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Erik Skultety <eskultet> |
| Component: | libvirt | Assignee: | Erik Skultety <eskultet> |
| Status: | CLOSED ERRATA | QA Contact: | zhe peng <zpeng> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | 7.3 | CC: | dyuan, rbalakri, xuzhang |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-3.2.0-5.el7 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-08-02 00:08:25 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: | |||
Fixed upstream by:
commit f4829df9aeb54d246ee9a816921a78e268ba7701
Refs: [master], {origin/master}, {origin/HEAD}, v3.3.0-27-gf4829df9a
Author: Erik Skultety <eskultet>
AuthorDate: Thu May 11 15:26:47 2017 +0200
Commit: Erik Skultety <eskultet>
CommitDate: Thu May 11 16:43:11 2017 +0200
qemu: Provide a much clearer message on device hot-plug
Adjust the current message to make it clear, that it is the hotplug
operation that is unsupported with the given host device type.
https://bugzilla.redhat.com/show_bug.cgi?id=1450072
Signed-off-by: Erik Skultety <eskultet>
verify with build: libvirt-3.2.0-9.virtcov.el7.x86_64 step: hotplug: # virsh attach-device rhel7 mdev.xml error: Failed to attach device from mdev.xml error: unsupported configuration: hotplug is not supported for hostdev subsys type 'mdev' hotunplug: 1.start a guest with mdev. 2.hotunplug # virsh detach-device rhel7 mdev.xml error: Failed to detach device from mdev.xml error: unsupported configuration: hot unplug is not supported for hostdev subsys type 'mdev' move 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-2017:1846 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-2017:1846 |
Description of problem: When a mediated device is to be hot-plugged to a VM, libvirt returns the following error: error: Failed to attach device from mdev.xml error: unsupported configuration: hostdev subsys type 'mdev' not supported From the message itself, it's not clear whether emitting it is the bug, or just the hot-plug is unsupported. And it this case it should be the latter, since hot-plug is unsupported at the moment. Version-Release number of selected component (if applicable): libvirt-3.2.0 How reproducible: 100% Steps to Reproduce: 1. prepare an mdev device to be attached $ cat mdev.xml <hostdev mode='subsystem' type='mdev' model='vfio-pci'> <source> <address uuid='9c131fd0-cecb-4f99-98e2-c2f7e2de6e11'/> </source> </hostdev> 2. start a VM 3. perform virsh attach-device myvm mdev.xml Actual results: error: unsupported configuration: hostdev subsys type 'mdev' not supported Expected results: Make it clear, that hot-(un)plugging an mdev device is currently an unsupported operation. Additional info: