On Thu, Feb 03, 2022 at 01:50:06PM -0500, Mikulas Patocka wrote: > On Tue, 1 Feb 2022, Bart Van Assche wrote: > > Only supporting copying between contiguous LBA ranges seems restrictive to me. > > I expect garbage collection by filesystems for UFS devices to perform better > > if multiple LBA ranges are submitted as a single SCSI XCOPY command. > > NVMe has a possibility to copy multiple source ranges into one destination > range. But I think that leveraging this capability would just make the > code excessively complex. The point is to defrag discontiguous blocks into a single range. The capability loses a major value proposition without multiple sources.
