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https://issues.apache.org/jira/browse/CLOUDSTACK-10290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16479225#comment-16479225
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ASF GitHub Bot commented on CLOUDSTACK-10290:
---------------------------------------------
rhtyd opened a new pull request #2651: CLOUDSTACK-10290: Introduce option to
have config drives on primary storage
URL: https://github.com/apache/cloudstack/pull/2651
This introduces a new global setting `vm.configdrive.primarypool.enabled` to
toggle creation/hosting of config drive iso files on primary storage, the
default will be `false` causing them to be hosted on secondary storage. The
support is limited from hypervisor resource side and in current implementation
limited to KVM. The next big change is that config drive is created at a
temporary location by management server and shipped to either KVM or SSVM agent
via cmd-answer pattern, the data of which is not logged in logs. This saves us
from adding `genisoimage` dependency on cloudstack-agent pkg.
The APIs to reset ssh public key, password and user-data (via update VM API)
requires that VM should be shutdown. Therefore, in the refactoring I removed
the case of updation of existing ISO. If there are objections I'll re-put the
strategy to detach+attach new config iso as a way of updation. In the
refactored implementation, the folder name is changed to lower-cased
`configdrive`. And during VM start, migration or shutdown/removal if primary
storage is enable for use, the KVM agent will handle cleanup tasks otherwise
SSVM agent will handle them.
## Types of changes
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- [ ] New feature (non-breaking change which adds functionality)
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] Enhancement (improves an existing feature and functionality)
- [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
## GitHub Issue/PRs
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> Config drive - only supported for secondary storage
> ---------------------------------------------------
>
> Key: CLOUDSTACK-10290
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-10290
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Affects Versions: 4.11.0.0
> Reporter: Rohit Yadav
> Assignee: Daan Hoogland
> Priority: Major
>
> Userdata disk looks like this:
> <disk type='file' device='cdrom'>
> <driver name='qemu' type='raw' cache='none'/>
> <source
> file='/mnt/eba12ff3-c3a6-394a-bf0f-23291f1f6266/configdrive.iso'/>
> <backingStore/>
> <target dev='hdd' bus='ide'/>
> <readonly/>
> <alias name='ide0-1-1'/>
> <address type='drive' controller='0' bus='1' target='0' unit='1'/>
> </disk>
> Mount is:
> root# df /mnt/eba12ff3-c3a6-394a-bf0f-23291f1f6266
> Filesystem 1K-blocks
> Used Available Use% Mounted on
> some-nfs-server.com:/nfs/secondary/ConfigDrive/i-2-24-VM 66391040 2973696
> 63417344 5% /mnt/eba12ff3-c3a6-394a-bf0f-23291f1f6266
>
> issue: where to find a primary storage for a VM that is not yet deployed. The
> configdrive is created before a storage is assigned. This order of execution
> must be reversed for this to work.
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