On Monday 21 November 2005 05:53, you wrote: > I don't think slave_configure is the right place to be modifying > a scsi_host attribute. How about this patch instead? Only compile > tested. Patch applied on 2.6.15-rc2, and gives no better result: # sg_readcap -16 -vv /dev/sdb read capacity (16) cdb: 9e 10 00 00 00 00 00 00 00 00 00 00 00 20 00 00 READ CAPACITY 16 command error: Host_status=0x0b [DID_SOFT_ERROR] dmesg output: -------------------------------------------------------------------------- ACPI: PCI Interrupt 0000:05:04.0[A] -> GSI 106 (level, low) -> IRQ 25 scsi3 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0 <Adaptec 3960D Ultra160 SCSI adapter> aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs Vendor: IFT Model: A16U-G1410 Rev: 342J Type: Direct-Access ANSI SCSI revision: 05 scsi3:A:4:0: Tagged Queuing enabled. Depth 32 target3:0:4: Beginning Domain Validation target3:0:4: wide asynchronous. target3:0:4: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 127) target3:0:4: Ending Domain Validation sdc : very big device. try to use READ CAPACITY(16). (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 3 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 2 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 3 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 2 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 3 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 2 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 3 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 2 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 3 - Abort Tag Completed. sdc : READ CAPACITY(16) failed. sdc : status=0, message=00, host=7, driver=00 sdc : use 0xffffffff as device size SCSI device sdc: 4294967296 512-byte hdwr sectors (2199023 MB) SCSI device sdc: drive cache: write back sdc : very big device. try to use READ CAPACITY(16). (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 2 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 3 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 2 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 3 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 2 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 3 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 2 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 3 - Abort Tag Completed. (scsi3:A:4:0): No or incomplete CDB sent to device. (scsi3:A:4:0): Protocol violation in Message-in phase. Attempting to abort. (scsi3:A:4:0): Abort Tag Message Sent (scsi3:A:4:0): SCB 2 - Abort Tag Completed. sdc : READ CAPACITY(16) failed. sdc : status=0, message=00, host=7, driver=00 sdc : use 0xffffffff as device size SCSI device sdc: 4294967296 512-byte hdwr sectors (2199023 MB) SCSI device sdc: drive cache: write back sdc: sdc1 sd 3:0:4:0: Attached scsi disk sdc sd 3:0:4:0: Attached scsi generic sg3 type 0 -------------------------------------------------------------------------- Does this mean the HBA has an hardware limit? Thanks and regards, -- Kilian CAVALOTTI Administrateur réseaux et systèmes UPMC / CNRS - LIP6 (C870) 8, rue du Capitaine Scott Tel. : 01 44 27 88 54 75015 Paris - France Fax. : 01 44 27 70 00 - : 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