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db416a3f03
WaitForStatusTransition refused to return while snapshot.Locked, and its comment quoted the exact error it was meant to prevent. Locked reads the guest config's lock: property; the failure is the flock on /var/lock/qemu-server/lock-<vmid>.conf, which PVE exposes nowhere. The flock cannot be observed, so it is retried. GuestLockRetry reissues an operation for a bounded 45s while PVE reports failing to enter lock_config for a guest, which it raises before doing any work. Two seams, because the failure has two surfaces. PveHttpClient.SendAsync retries the request for operations PVE serialises in the API handler; it takes a request factory because an HttpRequestMessage cannot be resent. PveCmdletBase.InvokeGuestTask reissues the call and re-waits its task for operations serialised in the forked worker, where the POST returns 200 and only the task fails. WaitForStatusTransition routes through the latter, hence Func<PveTask>. The predicate is path-specific and anchored at the start of what PVE said: lock_file uses identical wording for storage, LVM and HA locks, and a qmclone that fails after allocating disks must not be reissued into "VM already exists". That requires the raw text, so it reads PveTaskFailedException.ExitStatus and PveApiException.ApiMessage. The Locked check stays — it is correct for the config lock — with a comment that says so. Closes #113