On Thu, Aug 07, 2025 at 02:56:30PM +0900, Damien Le Moal wrote: > + This option is mandatory to support zoned block devices. For these > + devices, the realtime subvolume must be backed by a zoned block > + device and a regular block device used as the main device (for > + metadata). If the zoned block device is a host-managed SMR hard-disk > + containing conventional zones at the beginning of its address space, > + XFS will use the disk conventional zones as the main device and the > + remaining sequential write required zones as the backing storage for > + the realtime subvolume. Looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>