Hi Mikulas, On Thu, Aug 22, 2024 at 10:33 AM Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote: > Regarding disk-reordering - the disk may reorder I/Os, but if there is no > crash, the disk must appear to be coherent. Therefore, if we write A, get > A's endio and then write B, the disk must read B from this location, it > can't read A. > > The reordering only becomes a problem, if the system crashes (in that > case, it is unknown if the disk will read A or B after a crash). I think > that the SCSI standard even allows reading garbage after a crash. This is the detail that I was looking for. Thank you! David
