[Openstack-docs] [openstack/nova] DocImpact review request change I3d296fe0b4b9b976db02db90ad69fd299cd2096a
gerrit2 at review.openstack.org
gerrit2 at review.openstack.org
Mon Jan 21 12:46:20 UTC 2013
Hi, I'd like you to take a look at this patch for potential
DocImpact.
https://review.openstack.org/18042
Log:
commit b5ba3af91513f4530743af4faf738080f06c7c81
Author: David McNally <dave.mcnally at hp.com>
Date: Thu Dec 13 15:03:13 2012 +0000
Adding ability to specify the libvirt cache mode for disk devices
In past versions of Nova it was possible to explicitly configure
the cache mode of disks via the libvirt XML template. The curent approach
makes this a derived setting of either ânoneâ or âwritethroughâ based
on the support of O_DIRECT. Whilst this provides a good set of default
settings it removes the ability of the cloud provider to use other
modes such as âwritebackâ and âunsafeâ which are valuable in certain
configurations.
This change allows the cache mode to be specified on a per-disk type
basis. Leaving the specify_cachemode option set to False retains the
current behaviour.
DocImpact
bug 1086386
Change-Id: I3d296fe0b4b9b976db02db90ad69fd299cd2096a
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