On Fri, Jun 28, 2024 at 02:23:50PM -0700, Luis Chamberlain wrote: > We currently rely on the block device logical block size for the > offset alignment. While this *works* it doesn't work with performance > in mind. That's exactly what the minimum_io_size attribute is for. > > This would for example enhance performance for DIO on 4k IU drives which > have for example an LBA format of 512 bytes for both HDDs and NVMe. > Another use case is to ensure that DIO will be used with 16k IOs on > existing market 16k IU drives with an LBA format of 4k or 512 bytes. The minimum_io_size clearly is the minimum I/O size, not the minimal nice to have one. Changing this will break existing setups.
