openstack/nova
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OpenStack Compute (Nova)
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Thomas Goirand e6ce9557f8 qemu-img do not use cache=none if no O_DIRECT support 
If /var/lib/nova/instances is mounted on a filesystem like tmpfs that
doesn't have support for O_DIRECT, "qemu-img convert" currently crashes
because it's unconditionally using the "-t none" flag.

This patch therefore:
- moves the _supports_direct_io() function out of the libvirt driver,
from nova/virt/libvirt/driver.py to nova/utils.py and makes it public.
- uses that function to decide to use -t none or -t writethrough when
converting images with qemu-img.

Closes-Bug: #1734784

Co-Authored-By: melanie witt <melwittt@gmail.com>

Change-Id: Ifb47de00abf3f83442ca5264fbc24885df924a19
2017-11-29 22:33:39 +00:00
api-guide/source Merge "Api-guide: Address TODOs in user_concepts section" 2017-11-26 15:55:34 +00:00
api-ref/source Merge "api-ref: fix the type on the block_device_mapping_v2 parameter" 2017-11-23 00:07:30 +00:00
contrib trivial: Remove "vif" script 2017-08-07 16:00:10 +01:00
devstack Blacklist test_extend_attached_volume from cells v1 job 2017-10-05 17:31:05 -04:00
doc Merge "Update document related to host aggregate" 2017-11-28 15:26:28 +00:00
etc/nova Move contrail vif plugging to privsep. 2017-11-02 12:09:27 +11:00
gate move gate hooks to gate/ 2017-01-04 11:05:16 +00:00
nova qemu-img do not use cache=none if no O_DIRECT support 2017-11-29 22:33:39 +00:00
placement-api-ref/source Merge "[placement] Symmetric GET and PUT /allocations/{consumer_uuid}" 2017-11-28 11:09:03 +00:00
releasenotes Merge "Add instance action record for attach/detach/swap volumes" 2017-11-28 15:32:13 +00:00
tools xenapi: cached images should be cleaned up by time 2017-10-23 16:29:16 +00:00
.coveragerc Remove nova/openstack/* from .coveragerc 2016-10-12 16:20:49 -04:00
.gitignore Fix test runner config issues with os-testr 1.0.0 2017-09-13 17:11:57 -04:00
.gitreview Add .gitreview config file for gerrit. 2011-10-24 15:07:19 -04:00
.mailmap Add mailmap entry 2014-05-07 12:14:26 -07:00
.stestr.conf Fix test runner config issues with os-testr 1.0.0 2017-09-13 17:11:57 -04:00
.testr.conf [placement] Adjust the name of the gabbi tests 2016-09-20 19:14:44 +00:00
babel.cfg Get rid of distutils.extra. 2012-02-08 19:30:39 -08:00
bindep.txt Update bindep.txt for doc builds 2017-11-21 21:01:09 +01:00
CONTRIBUTING.rst Workflow documentation is now in infra-manual 2014-12-05 03:30:37 +00:00
HACKING.rst doc: fix link to creating unit tests in contributor guide 2017-11-14 11:22:43 -05:00
LICENSE initial commit 2010-05-27 23:05:26 -07:00
MAINTAINERS Fix broken URLs 2017-09-07 15:42:31 +02:00
README.rst doc: Rework README to reflect new doc URLs 2017-08-03 16:06:08 -04:00
requirements.txt Updated from global requirements 2017-11-25 18:22:04 +00:00
setup.cfg Move the idmapshift binary into privsep. 2017-10-24 18:50:23 +11:00
setup.py Updated from global requirements 2017-03-02 11:50:48 +00:00
test-requirements.txt Updated from global requirements 2017-11-16 11:16:21 +00:00
tests-functional-py3.txt Remove invalid URL in gabbi tests 2017-01-17 21:10:45 +00:00
tests-py3.txt Skip unit tests for SSL + py3 2017-03-02 14:30:16 +08:00
tox.ini Make setenv consistent for unit, func, and api-samples 2017-10-05 21:45:46 +00:00

README.rst

Team and repository tags

image

OpenStack Nova

OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of compute technologies, including: libvirt (KVM, Xen, LXC and more), Hyper-V, VMware, XenServer, OpenStack Ironic and PowerVM.

Use the following resources to learn more.

API

To learn how to use Nova's API, consult the documentation available online at:

For more information on OpenStack APIs, SDKs and CLIs in general, refer to:

Operators

To learn how to deploy and configure OpenStack Nova, consult the documentation available online at:

In the unfortunate event that bugs are discovered, they should be reported to the appropriate bug tracker. If you obtained the software from a 3rd party operating system vendor, it is often wise to use their own bug tracker for reporting problems. In all other cases use the master OpenStack bug tracker, available at:

Developers

For information on how to contribute to Nova, please see the contents of the CONTRIBUTING.rst.

Any new code must follow the development guidelines detailed in the HACKING.rst file, and pass all unit tests.

Further developer focused documentation is available at:

Other Information

During each Summit and Project Team Gathering, we agree on what the whole community wants to focus on for the upcoming release. The plans for nova can be found at: