Bug 1035453

Summary: limitation for maximum VirtIO-SCSI disks should be removed
Product: Red Hat Enterprise Virtualization Manager Reporter: Daniel Erez <derez>
Component: ovirt-engineAssignee: Daniel Erez <derez>
Status: CLOSED CURRENTRELEASE QA Contact: Raz Tamir <ratamir>
Severity: high Docs Contact:
Priority: unspecified    
Version: 3.3.0CC: acathrow, amureini, iheim, lpeer, Rhev-m-bugs, scohen, yeylon
Target Milestone: ---   
Target Release: 3.3.0   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: storage
Fixed In Version: is28 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-01-21 22:20:03 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Storage RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 857935, 1049022    

Description Daniel Erez 2013-11-27 19:57:28 UTC 
Description of problem:

Upon VM start, libvirt uses automatic address allocation for defining addresses   for each device (when not defined addresses explicitly).
As part of the automatic allocation, libvirt limits maximum units (disks)
for each controller [6 (narrow bus) / 15 (wide bus)].

In order to bypass this limitation, engine should set each device address explicitly (keeping unit value unique and consecutive in the VM devices).

More details and full discussion:
https://www.redhat.com/archives/libvir-list/2013-November/msg01113.html
Comment 1 Raz Tamir 2013-12-24 14:28:06 UTC 
verified is28:
1. created vm with 8 disks
2. run vm
Comment 2 Itamar Heim 2014-01-21 22:20:03 UTC 
Closing - RHEV 3.3 Released
Comment 3 Itamar Heim 2014-01-21 22:25:52 UTC 
Closing - RHEV 3.3 Released