I have searched high and low and cannot find the answer. I read about how zfs uses a Device ID for identification, usually provided by the firmware of the device. So if an controller presents an (array) lun w/a unique device ID, what would happen if I onlined the pool, and suddenly that lun was twice the size? Or would the controller present a different ID because the array characteristics have changed? All the same data would be contained within the vdev, including pool metadata, just spread across more drives... It may be a dealbreaker, and I REALLY would like to use zfs. Can it be done?
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