Hello, I'm working on the HP Smart Array SCSI driver (hpsa) and I'm seeing the following failures: hpsa1: <0x3230> at PCI 0000:02:00.0 IRQ 76 using DAC scsi4 : hpsa scsi 4:0:0:0: Direct-Access HP LOGICAL VOLUME 5.20 PQ: 0 ANSI: 5 sd 4:0:0:0: Attached scsi generic sg4 type 0 sd 4:0:0:0: [sdd] READ CAPACITY(16) failed sd 4:0:0:0: [sdd] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK sd 4:0:0:0: [sdd] Sense not available. hpsa: cp ffff8800cf400000 has check condition: unknown type: Sense: 0x5, ASC: 0x20, ASCQ: 0x0, Returning result: 0x2, cmd=[a0 00 00 00 00 00 00 00 10 00] sd 4:0:0:0: [sdd] 213196320 512-byte hardware sectors: (109 GB/101 GiB) sd 4:0:0:0: [sdd] Write Protect is off sd 4:0:0:0: [sdd] Mode Sense: 6b 00 00 08 sd 4:0:0:0: [sdd] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA sd 4:0:0:0: [sdd] READ CAPACITY(16) failed sd 4:0:0:0: [sdd] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK sd 4:0:0:0: [sdd] Sense not available. sdd: sdd1 sd 4:0:0:0: [sdd] Attached SCSI disk scsi 4:1:0:0: RAID HP P400 5.20 PQ: 0 ANSI: 0 scsi 4:1:0:0: Attached scsi generic sg5 type 12 The illegal request is coming from smartd and probably doesn't mean anything in this context since SA doesn't support the SCSI Report LUNs command. The READ CAPACITY failures are what I'm concerned about. I can't seem to track down why that's failing. I've tried printing out the_result from sd but it's not printing out. I'm assuming that anytime I load the driver it goes thru sd. if (the_result) { sense_valid = scsi_sense_valid(&sshdr); if (sense_valid && sshdr.sense_key == ILLEGAL_REQUEST && (sshdr.asc == 0x20 || sshdr.asc == 0x24) && sshdr.ascq == 0x00) /* Invalid Command Operation Code or * Invalid Field in CDB, just retry * silently with RC10 */ return -EINVAL; } retries--; } while (the_result && retries); printk(KERN_WARNING "sd-mfm: the_result = %d\n", the_result); sd reports: sd 4:0:0:0: [sdd] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK >From the controllers serial port I see: [04/08 14:31:09]Ctlr SCSI Request, Illegal CDB Opcode=0x0 [04/08 14:37:28]Volume SCSI Request, Illegal CDB Opcode=0xa0 when the driver loads. I guess the TUR is coming from sd. But neither of these indicate why the READ CAPACITY (16) failed. I've also tried printing out the command status from the driver but it only shows a check condition with no sense. Any ideas? Or is there not enough info here? Thanks, mikem -- 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