> On Mar 4, 2016, at 3:55 PM, Uma Krishnan <ukrishn@xxxxxxxxxxxxxxxxxx> wrote: > > From: "Manoj N. Kumar" <manoj@xxxxxxxxxxxxxxxxxx> > > When switching to the internal LUN defined on the > IBM CXL flash adapter, there is an unnecessary > scan occurring on the second port. This scan leads > to the following extra lines in the log: > > Dec 17 10:09:00 tul83p1 kernel: [ 3708.561134] cxlflash 0008:00:00.0: cxlflash_queuecommand: (scp=c0000000fc1f0f00) 11/1/0/0 cdb=(A0000000-00000000-10000000-00000000) > Dec 17 10:09:00 tul83p1 kernel: [ 3708.561147] process_cmd_err: cmd failed afu_rc=32 scsi_rc=0 fc_rc=0 afu_extra=0xE, scsi_extra=0x0, fc_extra=0x0 > > By definition, both of the internal LUNs are on the first port/channel. > > When the lun_mode is switched to internal LUN the > same value for host->max_channel is retained. This > causes an unnecessary scan over the second port/channel. > > This fix alters the host->max_channel to 0 (1 port), if internal > LUNs are configured and switches it back to 1 (2 ports) while > going back to external LUNs. > > Signed-off-by: Manoj N. Kumar <manoj@xxxxxxxxxxxxxxxxxx> Acked-by: Matthew R. Ochs <mrochs@xxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
