>>I want the template to be pulled down to primary storage each time a >>deployment starts.
I think this can be done using full clone vm deployment . In case of full clone template should get copied every time ,there is a global setting ³vmware.create.full.clone² which controls this attribute . Sadly it is only for vmware. Xen server do support this type of deployment http://support.citrix.com/proddocs/topic/xencenter-61/xs-xc-vms-copy.html , but not sure how to control it form CS. Thanks prashant On 1/23/15, 11:35 AM, "Sanjeev Neelarapu" <sanjeev.neelar...@citrix.com> wrote: >Hi Kyle, > >CS generally copies the template from secondary to primary if it does not >find an entry in the template_spool_ref table for that template. So if >you want CS to copy the template to primary every time you deploy a new >vm , you can have a script to deploy vms parallelly and to remove the db >entry before deploying each vm. > >Thanks, >Sanjeev >CloudPlatform Engineering >Citrix Systems, Inc. > >-----Original Message----- >From: Kyle Flavin [mailto:kyle.fla...@citrix.com] >Sent: Friday, January 23, 2015 6:18 AM >To: users@cloudstack.apache.org >Subject: RE: Clearing template cache on primary storage > >Thanks Somesh. > >-----Original Message----- >From: Somesh Naidu [mailto:somesh.na...@citrix.com] >Sent: Thursday, January 22, 2015 4:28 PM >To: users@cloudstack.apache.org >Subject: RE: Clearing template cache on primary storage > >Should be under /usr/share/cloudstack-common/scripts/storage/secondary/ > >You can double check Install Guide under section Prepare System VM >Tempate. > >Somesh >CloudPlatform Escalations >Citrix Systems, Inc. > > >-----Original Message----- >From: Kyle Flavin [mailto:kyle.fla...@citrix.com] >Sent: Thursday, January 22, 2015 7:00 PM >To: users@cloudstack.apache.org >Subject: RE: Clearing template cache on primary storage > >Thanks Somesh. Do you know offhand where I could find that script? That >sounds like a good place to start. > >-----Original Message----- >From: Somesh Naidu [mailto:somesh.na...@citrix.com] >Sent: Thursday, January 22, 2015 3:14 PM >To: users@cloudstack.apache.org >Subject: RE: Clearing template cache on primary storage > >> Is it possible to have multiple templates that are just pointers to the >>existing bits of the source template on secondary storage? >Not entirely impossible. I mean its' not going to be pointers, but if you >were looking to save time it takes to upload 20 copies, you could >manually setup the templates. This requires manual copy and DB updates. >You can get a hint of what's required by looking at the script used to >prepare the secondary storage for system templates. > >> However, this looks like it's just going to download the same VHD to >>secondary storage multiple times, creating multiple copies of the >>template on disk. >I thought that's what you were looking for. > >Copy template is definitely not what you are looking for, because, it is >copy from on secondary to another, doesn't involve primary storage. > >Somesh >CloudPlatform Escalations >Citrix Systems, Inc. > >-----Original Message----- >From: Kyle Flavin [mailto:kyle.fla...@citrix.com] >Sent: Thursday, January 22, 2015 6:06 PM >To: users@cloudstack.apache.org >Subject: RE: Clearing template cache on primary storage > >Hi Somesh, >Is it possible to have multiple templates that are just pointers to the >existing bits of the source template on secondary storage? > >I've tried the following two approaches. > >First, with Cloudmonkey, I tried to register a new template using >something like the following: >cloudmonkey register template displaytext="Windows Test Template 1" >format=VHD hypervisor=XenServer name="WindowsTestTemplate1" >ostypeid=<osid> url=http://<url_to_vhd> zoneid=<zoneid> > >However, this looks like it's just going to download the same VHD to >secondary storage multiple times, creating multiple copies of the >template on disk. > >Second, I tried making a copy of the template: >cloudmonkey copy template id=<templateid> destzoneid=<zoneid> > >However, this looks like it will only copy the template between two >different zones. It doesn't seem to allow me to copy the template to the >same zone, and give it a new name. > >I don't believe either solution gives me what I'm looking for, because I >want is to test the time it's taking the template to get from secondary >storage to primary when I do my deployment. Both of the possible >solution above seem to include the additional step of copying the full >VHD to secondary storage. If I could somehow register a new template, >and tell it to use the same bits on disk as the source template (no >additional copying of anything to secondary storage), I think that'd give >me what I want. But I'm not sure if that's possible. Am I looking at >this wrong? > >-----Original Message----- >From: Somesh Naidu [mailto:somesh.na...@citrix.com] >Sent: Thursday, January 22, 2015 6:51 AM >To: users@cloudstack.apache.org >Subject: RE: Clearing template cache on primary storage > >I do not believe there is any global config or API to achieve what you >want (force template download from secondary to primary storage for every >deployment on the same storage). > >An easy way to work around this would be to make 20 copies of the >template (basically register the same template 20 times with different >names) and force VM deployments to use a new template each time. > >Somesh >CloudPlatform Escalations >Citrix Systems, Inc. > >-----Original Message----- >From: Kyle Flavin [mailto:kyle.fla...@citrix.com] >Sent: Wednesday, January 21, 2015 4:53 PM >To: users@cloudstack.apache.org >Subject: Clearing template cache on primary storage > >Is it possible to clear template cache on primary storage prior to VM >deployment, via cloudmonkey or some other method? I'm doing some >performance tests on one of our Cloudstack clusters that is running >Xenserver. For testing purposes, I'd like to force the copy of the >template from secondary storage to primary storage, with each deployment >on this cluster. I'm kicking off the vm instance deployments in batches >of 20. I want the template to be pulled down to primary storage each >time a deployment starts. > >I've looked over the API and I don't see anything that quite matches what >I'm looking for. It looks like "prepareTemplate" will allow me to cache >the template on primary storage, but I'd like to "uncache" prior to >deploying a new instance: >https://cloudstack.apache.org/docs/api/apidocs-4.2/root_admin/prepareTempl >ate.html, and there doesn't appear to be an obvious way to do so. > >Thanks, >Kyle >
