StorageElementMapping request

[tonyadolph]

Hi Björn

As discussed, I have attached a python script that mimics most of the apply and destroy functionality of terraform providers. I created it in python as my golang skills at the moment are limited.

I hope that this will help in creating StorageElementMapping functionality.

If you take a look at the function createVmDiskMapping(s,baseUri,racNodeObj,asmDisks): You'll see the difference between the vmd mapping and storageElement mapping is only in the dataobject, either "storageElementId": storageElementId, or "virtualDiskId": virtualDiskId, is populated. The tricky bit is getting the the storageElementId.

For that see getDiskObjByWwid(s,baseUri,diskWwid):

if not asmDisk["obj"] or asmDisk["diskType"] == "PHYSICAL_DISK":
                # get the disk obj
                if asmDisk["diskType"].upper() == "PHYSICAL_DISK":
                    diskWwid = asmDisk["wwid"]
                    if not diskWwid:
                        raise Exception ("{asmDiskName} is set as Physical but the wwid is null".format(asmDiskName=asmDisk["name"]))
                    asmDiskObj=getDiskObjByWwid(s,baseUri,diskWwid)
                elif asmDisk["diskType"].upper() == "VIRTUAL_DISK":
                    raise Exception ("{asmDiskName} is set as Virtual but the id is null - did you skip disk creation?".format(asmDiskName=asmDisk["name"]))
                else:
                    raise Exception ("Unsupported diskType {diskType}".format(diskType=asmDisk["diskType"]))
            else:
                asmDiskObj  = asmDisk["obj"]
                asmDiskName = asmDisk["name"]

and

if asmDisk["diskType"].upper() == "PHYSICAL_DISK":
                storageElementId = asmDiskObj['id']
            else:
                virtualDiskId = asmDiskObj['id']

I hope that my python script clear. createRACnodes.zip

See the config file asmDisks section where the WWID of the external disk aka StorageElement ,"asmDisks":[ { "name": "ASM_DISK1" ,"diskType": "PHYSICAL_DISK" ,"size": 5 ,"shareable": true ,"sparse": "No" ,"description": "ASM RAC Shared Disk TonyA testing" ,"obj": null ,"wwid": "600601600ec03600cb545b949352e811" }, I've added two config files, one for Virtual Disks, one for Physical.

createRAC.zip

Rgds Tony

[dbgeek]

Hi Tonny

I think I will create a resourceOvmSeM (storageElement resource) that have attributes like

• vmid
• wwid
• name
• description

My OVM at home have died so will try to do some coding in the black that you can test and my HW setup only support virtdualDisk...

[tonyadolph]

I started but stalled due to lack of golang experience. But I planned the same, but would have a storageElementId too. The object that gets passed to VmDiskMapping in my python version looks like this:

obj = {
            "userData": [],
            "locked": False,
            "description": "mapping for {racNode}".format(racNode=racNodeName),
            "generation": 1,
            "storageElementId": storageElementId,
            "vmId": racNodeObj['id'],
            "diskWriteMode": "READ_WRITE",
            "readOnly": False,
            "emulatedBlockDevice": False,
            "virtualDiskId": virtualDiskId,
            "resourceGroupIds": [],
            "diskTarget": diskTarget,
            "id": None,
            "name": "Mapping for disk Id ({diskId})".format(diskId=diskId)
        }

where storageElementIdand virtualDiskIdare mutually exclusive.

I look forward to seeing your implementation. And I'll be happy to test it.