Bug 1855305

Summary:	Cannot hotplug disk reports libvirtError: Requested operation is not valid: Domain already contains a disk with that address
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Frank DeLorey <fdelorey>
Component:	ovirt-engine	Assignee:	Arik <ahadas>
Status:	CLOSED ERRATA	QA Contact:	Nisim Simsolo <nsimsolo>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	4.3.7	CC:	aenrique, ahadas, dfodor, emarcus, gchakkar, imomin, mavital, michal.skrivanek, mkalinin, mzamazal, nsimsolo, sbonazzo, shipatil, sigbjorn.lie, tnisan
Target Milestone:	ovirt-4.4.3
Target Release:	4.4.3
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ovirt-engine-4.4.3.3	Doc Type:	Bug Fix
Doc Text:	Previously, hot-plugging a disk to Virtual Machine sometimes failed if the disk was assigned an address that was already assigned to a host-passthrough disk device. In this release, conflicts are avoided by preventing an address that is assigned to host-passthrough disk device from being assigned to a disk that is hot-plugged to the Virtual Machine.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-11-24 13:09:25 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:

Comment 15 Arik 2020-09-06 07:21:16 UTC

Scenarios to test:

(A) Simple scenario:
1. Run a VM with a single passthrough SCSI disk.
2. Plug a non-passthrough SCSI disk
Expected result: the disk should be plugged successfully to the VM

(B) The reported scenario:
1. Run a VM with 5 non-passthrough SCSI disks and a single passthrough SCSI disk
2. Make sure that the non-passthrough disks are assigned with units 0-4 and the passthrough disk is assigned with unit=5
3. Unplugged the last disk
4. Plug the disk that was just unplugged
5. Make sure that the plugged disk is assigned again with unit=4
6. Plug another non-passthorough SCSI disk
7. Make sure that the disk that was just plugged is assigned with unit=6

Comment 18 Nisim Simsolo 2020-10-22 14:22:19 UTC

Verified:
ovirt-engine-4.4.3.7-0.22.el8ev
vdsm-4.40.34-1.el8ev.x86_64
libvirt-daemon-6.6.0-6.module+el8.3.0+8125+aefcf088.x86_64
qemu-kvm-5.1.0-13.module+el8.3.0+8382+afc3bbea.x86_64

Verification scenario:
as described in:
https://bugzilla.redhat.com/show_bug.cgi?id=1855305#c15

Comment 22 errata-xmlrpc 2020-11-24 13:09:25 UTC

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 (Low: Red Hat Virtualization security, bug fix, and enhancement update), 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/RHSA-2020:5179