genegr opened a new pull request, #13059:
URL: https://github.com/apache/cloudstack/pull/13059

   ### Description
   
   Registering an adaptive-plugin-backed managed primary pool currently fails 
with `Capacity bytes not available from the storage provider, user provided 
capacity bytes must be specified` even when `capacityBytes=` is actually passed 
to `createStoragePool`, whenever the provider cannot report capacity at that 
moment (for example a FlashArray pod with no quota and no footprint yet, or a 
transient probe failure).
   
   Root cause lives in `AdaptiveDataStoreLifeCycleImpl.initialize()`: the 
user-supplied capacity was guarded behind `stats != null`, so any null stats 
caused a fall-through to the "no user capacity either" error branch even when 
the user *did* provide one.
   
   This change accepts the user-supplied value unconditionally and uses the 
provider stats only as an upper-bound sanity check when they are actually 
available. The "no user-provided capacity, no provider capacity" branch is 
preserved and still raises the same `InvalidParameterValueException`.
   
   ### Types of changes
   
   - [x] Bugfix (non-breaking change which fixes an issue)
   
   ### Feature/Enhancement Scale or Bug Severity
   
   Major for any deployment that uses the adaptive storage framework against a 
provider which cannot report capacity synchronously at pool-register time — 
registration will always fail regardless of what `capacityBytes` is passed.
   
   ### How Has This Been Tested?
   
   Validated end-to-end on a 4.23-SNAPSHOT lab:
   
   - Registered a FlashArray primary pool (`provider="Flash Array"`, 
`transport=nvme-tcp`) against an empty Purity pod with 
`capacitybytes=1099511627776` and `capacityiops=100000`. Before this change, 
the registration failed with the error above; after this change, the pool 
enters the `Up` state using the user-provided capacity.
   - Registered a pool against a pod that *does* report stats; the pool's 
capacity comes from the provider as before, and the upper-bound check still 
rejects a user-supplied `capacityBytes` that exceeds the provider's capacity.
   - Exercised a 20 GiB volume end-to-end (create, attach to a Rocky 9 VM, 
`mkfs.ext4` + SHA-256 write/verify, live-migrate between two KVM hosts with the 
data disk attached — no I/O gap across the migrate).
   


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