[BUG] How to provide a size when creating a datastore

[HaruChebrolu]

Describe the bug
I have a disk of size 200G, but I want to create a datastore using only 100G of it. For this, I can specify size while creating datastore. And I don't see an option to provide a size for datastore.create command

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[dougm]

Right, govc datastore.create does not provide that option. It uses QueryVmfsDatastoreCreateOptions for the VmfsDatastoreCreateSpec.
Enhancement PRs are welcome of course.
Code is here:

govmomi/govc/datastore/create.go

Line 273 in 1058315

options, err := ds.QueryVmfsDatastoreCreateOptions(ctx, disk.DevicePath)

[HaruChebrolu]

Thanks for your quick response @dougm
I am happy to contribute an enhancement PR. Just a question, inorder to add datastoreSize parameter, do I need to add it in VmfsdataStoreCreateSpec or QueryVmfsDatastoreCreateOptionsRequestType

[dougm]

Great. I suggest following the doc links above and expect it would be VmfsDatastoreCreateSpec input, but I don't know where. You could also try Developer Center -> Code Capture in vCenter, record the UI operation for your use-case and captured code may provide some hints. There might also be an existing example in another language, using pyvmomi or PowerShell, if so we can port what we need from such an example to Go.