On Saturday 19 November 2005 02:32, Douglas Gilbert wrote: > Here are the test results for that patch. They indicate > that the READ_CAPACITY(16) is getting to the disk (which > doesn't support it since its capacity is 18 GB). So it seems promising. :) FYI, I had reports from users who said to be able to use a >2TB external storage array (different vendor) with that same 39160 Adaptec HBA. Here's part of their dmesg: scsi4 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36 <Adaptec 3960D Ultra160 SCSI adapter> aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs (scsi4:A:0): 160.000MB/s transfers (80.000MHz DT, offset 62, 16bit) Type: Direct-Access ANSI SCSI revision: 03 scsi4:A:0:0: Tagged Queuing enabled. Depth 4 SCSI device sdg: 2686132224 1024-byte hdwr sectors (2750599 MB) SCSI device sdg: drive cache: write back sdg: unknown partition table Attached scsi disk sdg at scsi4, channel 0, id 0, lun 0 The weird part is that the driver does not even seem to invoke READ CAPACITY(16) command, but directly succeed in getting device size. To sum up my experiences so far: --------------------|----------------|---------------|-------------------------- Ext. device (>2TB) | HBA | Driver | Result --------------------|----------------|---------------|-------------------------- Infortrend EonStore | Adaptec 39160 | aic7xxx | READ CAPACITY(16) fails A16U-G1410 | | | --------------------|----------------|---------------|-------------------------- Infortrend EonStore | LSI Logic U320 | mptbase | READ CAPACITY(16) A16U-G1410 | | | success --------------------|----------------|---------------|-------------------------- Proware | Adaptec 39160 | aic7xxx | Direct success --------------------|----------------|---------------|-------------------------- So it seems to come from both the external device and the aic7xxx driver,since the EonStore works with another HBA, and the aic7xxx works with another device... It seems quite strange to me, but I hope gurus here will have a rational explanation. :) Best 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
