Christophe Saout wrote:
I don't think that will happen. The values are already the allowed maximum values. Or am I wrong?
I don't think they are the max values. SCSI will override them depending on the HBA settings.
Build a DM device from devices on a qla2300 or scsi_debug, and compare the request sizes and merges between accessing the DM device and accessing the SCSI device direclty.
If the table isn't backed by a real device (like if it only contains an error target) the resulting queue will use those "unrealstic" values that exceed the system-wide limits. And a hardsect size of 0 bytes...
If you do not have a device, should you set sane IO restrictions in the target accroding to your target implementation limits.
