Hi all, as you might know, I'm trying to revamp the eh_abort_handler implementation by sending command aborts directly whenever the timeout triggers, without entering SCSI EH. So, during testing where the remote port is disabled I've seen this: [ 864.734937] qla2xxx [0000:41:00.0]-8802:1: Aborting from RISC nexus=1:0:0 sp=ffff880225b0dd40 cmd=ffff8802248d76c0 [ 864.737274] qla2xxx [0000:41:00.0]-1800:1: Entered qla2x00_mailbox_command. [ 864.738720] qla2xxx [0000:41:00.0]-1806:1: Prepare to issue mbox cmd=0x54. [ 864.740268] qla2xxx [0000:41:00.0]-180f:1: Going to unlock irq & waiting for interrupts. jiffies=100022781. [ 864.740574] qla2xxx [0000:41:00.0]-1814:1: Cmd=54 completed. [ 864.740596] qla2xxx [0000:41:00.0]-3822:1: FCP command status: 0x5-0x0 (0x80000) nexus=1:0:0 portid=691400 oxid=0x38e cdb=28000000000000000800 len=0x1000 rsp_info=0x0 resid=0x0 fw_resid=0x0. [ 864.740608] qla2xxx [0000:41:00.0]-1821:1: Done qla2x00_mailbox_command. [ 864.740615] qla2xxx [0000:41:00.0]-8804:1: Abort command mbx success cmd=ffff8802248d76c0. [ 864.740631] qla2xxx [0000:41:00.0]-801c:1: Abort command issued nexus=1:0:0 -- 2002. Again, the port is disabled, so the TMF _cannot_ be received by the remote port, let alone processed. But still the command abort is processed correctly and the command is returned to the upper layers. So with the current thinking the command abort was successful, and EH would exit, as the remote port was assumed to be working. But most evidently the remote port is _still_ not reachable, so the TMF _should_ have returned 'FAILED'. At least that's what we expect. But it looks as if this expectation is slightly skewed, as most likely a successful ABORT TASK TMF just means that the command was terminated, not that the remote port itself was working. If _that_ should be the case it looks as if we _always_ should be issuing a RESET LUN TMF whenever command aborts have been processed. Would that be correct? Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) -- 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
