Rafael Weingärtner created CLOUDSTACK-10323:
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Summary: Change disk offering when volume is migrated to different
type of storage pool.
Key: CLOUDSTACK-10323
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-10323
Project: CloudStack
Issue Type: Improvement
Security Level: Public (Anyone can view this level - this is the default.)
Affects Versions: 4.12
Reporter: Rafael Weingärtner
Assignee: Rafael Weingärtner
Change disk offering when volume is migrated to different type of storage pool.
This is a continuation of work developed on PR #2425 (CLOUDSTACK-10240), which
provided root admins an override mechanism to move volumes between storage
systems types (local/shared) even when the disk offering would not allow such
operation. To complete the work, we will now provide a way for administrators
to enter a new disk offering that can reflect the new placement of the volume.
We will add an extra parameter to allow the root admin inform a new disk
offering for the volume. Therefore, when the volume is being migrated, it will
be possible to replace the disk offering to reflect the new placement of the
volume.
The API method will have the following parameters:
* storageid (required)
* volumeid (required)
* livemigrate(optional)
* newdiskofferingid (optional) – this is the new parameter
The expected behavior is the following:
* If “newdiskofferingid” is not provided the current behavior is maintained.
Override mechanism will also keep working as we have seen so far.
* If the “newdiskofferingid” is provided by the admin, we will execute the
following checks
** new disk offering mode (local/shared) must match the target storage mode. If
it does not match, an exception will be thrown and the operator will receive a
message indicating the problem.
** we will check if the new disk offering tags match the target storage tags.
If it does not match, an exception will be thrown and the operator will receive
a message indicating the problem.
** check if the target storage has the capacity for the new volume. If it does
not have enough space, then an exception is thrown and the operator will
receive a message indicating the problem.
** check if the size of the volume is the same as the size of the new disk
offering. If it is not the same, we will ALLOW the change of the service
offering, and a warning message will be logged.
We execute the change of the Disk offering as soon as the migration of the
volume finishes. Therefore, if an error happens during the migration and the
volume remains in the original storage system, the disk offering will keep
reflecting this situation
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