This feature allows using templates and ISOs avoiding secondary storage as intermediate cache on KVM. The virtual machine deployment process is enhanced to supported bypassed registered templates and ISOs, delegating the work of downloading them to primary storage to the KVM agent instead of the SSVM agent.
Template and ISO registration:
- When hypervisor is KVM, a checkbox is displayed with 'Direct Download' label.
- API methods registerTemplate and registerISO are both extended with this new parameter directdownload.
- On template or ISO registration, no download job is sent to SSVM agent, CloudStack would only persist an entry on template_store_ref indicating that template or ISO has been marked as 'Direct Download' (bypassing Secondary Storage). These entries are persisted as:
template_id = Template or ISO id on vm_template table
store_id NULL
download_state = BYPASSED
state = Ready
(Note: these entries allow users to deploy virtual machine from registered templates or ISOs)
- An URL validation command is sent to a random KVM host to check if template/ISO location can be reached. Metalink are also supported by this feature. In case of a metalink, it is fetched and URL check is performed on each of its URLs.
- Checksum should be provided as indicated on #2246: {ALGORITHM}CHKSUMHASH
- After template or ISO is registered, it would be displayed in the UI
Virtual machine deployment:
When a 'Direct Download' template is selected for deployment, CloudStack would delegate template downloading to destination storage pool via destination host by a new pluggable download manager.
Download manager would handle template downloading depending on URL protocol. In case of HTTP, request headers can be set by the user via vm_template_details. Those details should be persisted as:
Key: HTTP_HEADER
Value: HEADERNAME:HEADERVALUE
In case of HTTPS, a new API method is added uploadTemplateDirectDownloadCertificate to allow user importing a client certificate into all KVM hosts' keystore before deployment.
After template or ISO is downloaded to primary storage, usual entry would be persisted on template_spool_ref indicating the mapping between template/ISO and storage pool.
The behavior is now consistent with template creation. This commit
also adds a unit test for this functionality to make sure that it will
always happen.
This reverts commit cd7218e241, reversing
changes made to f5a7395cc2.
Reason for Revert:
noredist build failed with the below error:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.2:compile (default-compile) on project cloud-plugin-hypervisor-vmware: Compilation failure
[ERROR] /home/jenkins/acs/workspace/build-master-noredist/plugins/hypervisors/vmware/src/com/cloud/hypervisor/guru/VMwareGuru.java:[484,12] error: non-static variable logger cannot be referenced from a static context
[ERROR] -> [Help 1]
even the normal build is broken as reported by @koushik-das on dev list
http://markmail.org/message/nngimssuzkj5gpbz
on restart of management server, template sync runs. It checks for
templates in ssvm using the uniquename. If it doesnt find any, cleans
the directory. In case of uploaded templates, these are getting saved
using name instead on uniquename and hence template sync cant find them
and does cleanup. Using uniquename in template.properties now.
on calling GetUploadParamsForTemplate, persisting the metadata to db
validating the account limits and incrementing the appropriate limits
encoded the metadata on management server using preshared key
Unable to register private template across all Zones - crosszones flag no longer works.
This was because the code skipped the loop after the first download initiation. Introduced a set so that if it is already downloaded to the same zone then skip it for private template.
Private templates would now get copied to only one of image storage chosen randamly as was the case earlier. Dont throw an exception for uploading volumes when there are multiple image stores, instead choose one of them randomly
Signed off by : nitin mehta<nitin.mehta@citrix.com>
Nicolas Vazquez
rashmidixit
jeff
cirstofolini
Rajani Karuturi
Rafael Weingartner
Rajani Karuturi
Sanjay Tripathi
Koushik Das
Laszlo Hornyak
Bharat Kumar
Min Chen
edison
Nitin Mehta
Prachi Damle
Marcus Sorensen
Alex Huang
lafferty
Harikrishna Patnala
Anthony Xu
Alena Prokharchyk
Prasanna Santhanam