On Tue, 2023-09-05 at 18:15 -0500, Mike Christie wrote: > This has read_capacity_10 have scsi-ml retry errors instead of > driving > them itself. > > There are two behavior changes: > 1. We no longer retry when scsi_execute_cmd returns < 0, but we > should be > ok. We don't need to retry for failures like the queue being removed, > and > for the case where there are no tags/reqs the block layer > waits/retries > for us. For possible memory allocation failures from blk_rq_map_kern > we > use GFP_NOIO, so retrying will probably not help. > 2. For device reset UAs, we would retry > READ_CAPACITY_RETRIES_ON_RESET > times, then once those are used up we would hit the main do loops > retry > counter and get 3 more retries. We now only get > READ_CAPACITY_RETRIES_ON_RESET retries. > > Signed-off-by: Mike Christie <michael.christie@xxxxxxxxxx> > Reviewed-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Martin Wilck <mwilck@xxxxxxxx>
