Bug 1312879

Summary: cannot refresh host devices of a host when device is assigned to multiple VMs
Product: [oVirt] ovirt-engine Reporter: Martin Polednik <mpoledni>
Component: BLL.VirtAssignee: Martin Betak <mbetak>
Status: CLOSED CURRENTRELEASE QA Contact: Nisim Simsolo <nsimsolo>
Severity: medium Docs Contact:
Priority: high    
Version: 4.0.0CC: bugs, mgoldboi, michal.skrivanek, nsimsolo, sbonazzo, tjelinek
Target Milestone: ovirt-3.6.5Flags: tjelinek: ovirt-3.6.z?
rule-engine: planning_ack?
tjelinek: devel_ack+
rule-engine: testing_ack+
Target Release: 3.6.5   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-04-21 14:38:25 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Virt RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
server.log
none
engine.log none

Description Martin Polednik 2016-02-29 12:38:44 UTC
Created attachment 1131523 [details]
server.log

Description of problem:
The refresh host capabilities button should refresh host devices. If a single host device (tested with USB) is assigned to multiple VMs, host device capabilities are not refreshed.


Version-Release number of selected component (if applicable):
ovirt-engine-4.0.0-0.0.master.20160222171138.git904ab61.fc23.noarch

How reproducible:
Always

Steps to Reproduce:
1. Assign a host device to >1 VM (USB mouse was used in this case),
2. remove the device from host,
3. refresh host capabilities.

Actual results:
The device list should be refreshed to reflect current host configuration.

Expected results:
The device list is *not* updated at all, including a device that was physically removed from the host.

Comment 1 Martin Polednik 2016-02-29 12:44:36 UTC
Removing the devices from VMs seems to act as a workaround. Also found occurence of #1306333.

Comment 2 Martin Polednik 2016-02-29 12:45:41 UTC
Created attachment 1131525 [details]
engine.log

Comment 3 Nisim Simsolo 2016-04-11 14:30:38 UTC
Verified on: 
rhevm-3.6.5-0.1.el6
qemu-kvm-rhev-2.3.0-31.el7_2.10.x86_64
libvirt-client-1.2.17-13.el7_2.4.x86_64
vdsm-4.17.25-0.el7ev.noarch
sanlock-3.2.4-2.el7_2.x86_64

Verification scenario: 
1. Plug USB device, refresh host capabilities and verify USB device is listed in host --> host devices sub tab.
2. Attach same USB device to 2 VMs.
3. Move host to maintenance (maintenance because hotplug/unplug is not supported yet).
4. unplug the device and activate host.
5. Verify USB device detached from both VMs and is not listed in the host --> host devices sub tab.

Note: in several cases, bug https://bugzilla.redhat.com/show_bug.cgi?id=1306333 can affect refresh host capabilities, and till this bug will be fixed, a restart of host libvirtd service can workaround this issue.