At least one snapshot has to be active to create a new snapshot for this VM

[kruge002]

When trying to create a snapshot for a VMware VM we sometimes see the following error message: "At least one snapshot has to be active to create a new snapshot for this VM". The error is raised in the following code fragment:

if !snapshots.blank? && snapshots.first.get_current_snapshot.nil?
  unsupported_reason_add(:snapshot_create, _("At least one snapshot has to be active to create a new snapshot for this VM"))
end

Creating a new snapshot should be possible independent of another snapshot having the “currentSnapshot” property set.

Reference:
http://talk.manageiq.org/t/at-least-one-snapshot-has-to-be-active-to-create-a-new-snapshot-for-this-vm/4590
https://github.com/ManageIQ/manageiq/blob/master/app/models/vm_or_template/operations/snapshot.rb
https://github.com/ManageIQ/manageiq/blob/master/app/models/snapshot.rb
https://code.vmware.com/apis/358/vsphere/doc/vim.vm.SnapshotInfo.html#currentSnapshot

[agrare]

@gmcculloug I know it was a long time ago but do you happen to remember why this was added?

[gmcculloug]

@agrare I do not recall off the top of my head. I will spend a little more time digging into the history.

[gmcculloug]

@agrare @kruge002 I traced the message At least one snapshot has to be active to create a new snapshot for this VM back to May of 2008 but it is unclear why it was originally added.