> > So to sum up - 2 issues: > > > > 1) we believe the iSER + RW API correctly sizes the SQ, yet we're seeing SQ > > overflows. So the SQ sizing needs more investigation. > > > > 2) if the SQ is full, then the iSER/target code is supposed to resubmit. And > > apparently that isn't working. > > > > For #2, target-core expects -ENOMEM or -EAGAIN return from fabric driver > callbacks to signal internal queue-full retry logic. Otherwise, the > extra se_cmd->cmd_kref response SCF_ACK_KREF is leaked until session > shutdown and/or reinstatement occurs. > > AFAICT, Potunri's earlier hung task with v4.8.y + ABORT_TASK is likely > the earlier v4.1+ regression: > > https://github.com/torvalds/linux/commit/527268df31e57cf2b6d417198717c6d6afd > b1e3e > > That said, there is room for improvement in target-core queue-full error > signaling, and iscsi-target/iser-target callback error propagation. > > Sending out a series shortly to address these particular items. > Please have a look. > Hey Nicholas, Bharat is out until next week. He'll try this all out next week and report back. Thanks! Steve. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
