Bug 887910 - Change default block device to be IDE
Summary: Change default block device to be IDE
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: openstack-nova
Version: 1.0 (Essex)
Hardware: Unspecified
OS: Unspecified
high
medium
Target Milestone: rc
: 2.1
Assignee: RHOS Maint
QA Contact: Yaniv Kaul
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-12-17 15:31 UTC by Perry Myers
Modified: 2023-09-18 10:03 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of: 865345
Environment:
Last Closed: 2012-12-17 17:14:35 UTC
Target Upstream Version:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Launchpad 904480 0 None None None Never
Red Hat Issue Tracker OSP-28813 0 None None None 2023-09-18 09:59:50 UTC

Description Perry Myers 2012-12-17 15:31:52 UTC 
The default block device type for RHOS Folsom is presently virtio.  We either need to:

1. Limit support for Windows guest images to those that have already had virtio-
   block drivers pre-installed by some other guest provisioning software
2. Change the defaults so that the more compatible block device is used (IDE)
3. Accelerate changes recommended in bug # 865345 which attempt to use a 
   combination of libosinfo/libguestfs to determine the optimal selection for 
   NIC/disk drivers
Comment 1 Daniel Berrangé 2012-12-17 17:14:35 UTC 
FYI, current Nova code is hardcoded to virtio for KVM/QEMU guests. From libvirt/driver.py:

            if CONF.libvirt_type == "uml":
                default_disk_bus = "uml"
            elif CONF.libvirt_type == "xen":
                default_disk_bus = "xen"
            else:
                default_disk_bus = "virtio"

Per discussion on the mailing list, we're sticking with this, and will accelerate impl of per-image hardware config params
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