Hi All, i’d like to propose implenetation for soft-hba property for scsi layer with timing updates.
Problem: we have hw hba like LSI, where we are using direct connetion of drives to HBA with low latency. We have iSCSI drives with sd module usage where we try to use timing related to HW HBA. but, latency to denwork drives are different with direct connected local drives. I have impleneted my idea to split sd_soft_io_time for hw nad soft drives: https://bitbucket.org/dilos/dilos-illumos/commits/b82c668f9e837864afca983809c4d4a28f5051b0 https://bitbucket.org/dilos/dilos-illumos/commits/4d805e127dc4211671ad70c2e026014e6de4a991 and i’m using it with iscsi and aoe drives. right now we can use /etc/system vriable sd_soft_io_time for soft drives and it is not impacts for real hw drives. it is example of my idea and if it is can be interest to others i can try contribute it ot you can try port it to illumos tree. i have no time try to setup and use original build env and can provide reports based on DilOS, but i hope change sin sd module based on smartos changes and can be usable/applicable for illumos. Best regards, -Igor ------------------------------------------ openzfs-developer Archives: https://openzfs.topicbox.com/groups/developer/discussions/Ta14496565d3bc26c-M30b74fb75652c97ec3059901 Powered by Topicbox: https://topicbox.com
