[Openstack-docs] [openstack/nova] DocImpact review request change I041b5524f8a0ea59e89ece0202f0503abf2f9d8e
gerrit2 at review.openstack.org
gerrit2 at review.openstack.org
Tue Jan 15 19:41:46 UTC 2013
Hi, I'd like you to take a look at this patch for potential
DocImpact.
https://review.openstack.org/19408
Log:
commit b481dd1cbc64455ff382fc04c3d7455cacefa93d
Author: John Bresnahan <jbresnah at redhat.com>
Date: Thu Jan 10 07:19:28 2013 -1000
Directly copy a file URL from glance.
That patch allows nova to use shutil to copy a file directly from the
glance store. For this to work glance needs to enable direct_url
descriptions in the image metadata. This is done by setting
show_image_direct_url to True in glance-api.conf. The path used to back
glance also must match the path used to back nova instance storage. This
should be a large performance increase for the cases where both glance
and nova instance storage are backed by a shared file system like gluster
or ceph.
A new option has been added to nova: allowed_direct_url_schemes
This option is set to a list of schemes that can be directly accessed.
For this first simple patch only file:// is valid, and the
implementation is simple and inline. In the future it would be better
to make this into propagation modules which are dynamically loaded
according to the scheme.
DocImpact
Implements: blueprint direct-file-copy
Change-Id: I041b5524f8a0ea59e89ece0202f0503abf2f9d8e
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