Re: [openstack-dev] [Openstack-operators] [nova] Is verification of images in the image cache necessary?

2016-05-24 Thread Sean Dague
On 05/24/2016 11:54 AM, Dan Smith wrote: >> I like the idea of checking the md5 matches before each boot, as it >> mirrors the check we do after downloading from glance. Its possible >> thats very unlikely to spot anything that shouldn't already be worried >> about by something else. It may just be

Re: [openstack-dev] [Openstack-operators] [nova] Is verification of images in the image cache necessary?

2016-05-24 Thread Dan Smith
> I like the idea of checking the md5 matches before each boot, as it > mirrors the check we do after downloading from glance. Its possible > thats very unlikely to spot anything that shouldn't already be worried > about by something else. It may just be my love of symmetry that makes > me like tha

Re: [openstack-dev] [Openstack-operators] [nova] Is verification of images in the image cache necessary?

2016-05-24 Thread Matthew Booth
On Tue, May 24, 2016 at 1:15 PM, Fichter, Dane G. wrote: > Hi John and Matt, > > I actually have a spec and patch up for review addressing some of what > you’re referring to below. > > https://review.openstack.org/#/c/314222/ > https://review.openstack.org/#/c/312210/ > > I think you’re quite rig

Re: [openstack-dev] [Openstack-operators] [nova] Is verification of images in the image cache necessary?

2016-05-24 Thread Fichter, Dane G.
.openstack.org<mailto:openstack-operat...@lists.openstack.org>" mailto:openstack-operat...@lists.openstack.org>> Subject: Re: [openstack-dev] [Openstack-operators] [nova] Is verification of images in the image cache necessary? On Tue, May 24, 2016 at 11:06 AM, John Garbutt mailto:j.

Re: [openstack-dev] [Openstack-operators] [nova] Is verification of images in the image cache necessary?

2016-05-24 Thread Matthew Booth
On Tue, May 24, 2016 at 11:06 AM, John Garbutt wrote: > On 24 May 2016 at 10:16, Matthew Booth wrote: > > During its periodic task, ImageCacheManager does a checksum of every > image > > in the cache. It verifies this checksum against a previously stored > value, > > or creates that value if it

Re: [openstack-dev] [Openstack-operators] [nova] Is verification of images in the image cache necessary?

2016-05-24 Thread John Garbutt
On 24 May 2016 at 10:16, Matthew Booth wrote: > During its periodic task, ImageCacheManager does a checksum of every image > in the cache. It verifies this checksum against a previously stored value, > or creates that value if it doesn't already exist.[1] Based on this > information it generates a