Date: Tue, 28 Jul 2015 13:01:37 -0400 From: Dan Langille <dan@langille.org> To: freebsd-scsi@freebsd.org Subject: dmesg output not as expected Message-ID: <5A302DC6-C3EF-4DB1-8AD1-A0314C048A28@langille.org>
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I wish to move a tape library from one system to another. Today I moved = the cable from one system to another and ran 'camcontrol rescan all'. For sa0, why do I see 80MB/s on the old system vs 40MB/s on the new = system? Is this card related? Slot related? Similarly, ch0 goes from 20MB/s to 3.3MB/s....=20 I was hoping for a speed boost. :) Some of the camcontrol devlist output includes: <COMPAQ SuperDLT1 5F5F> at scbus14 target 1 lun 0 = (pass11,sa0) <COMPAQ MSL5000 Series 0520> at scbus14 target 3 lun 0 = (pass12,ch0) This is on the existing system: I *think* this system holds a Symbios Ultra2 32-bit PCI SCSI Adapter = SYM8951U Jul 23 13:24:19 knew kernel: sym0: <895> port 0xe000-0xe0ff mem = 0xfebeec00-0xfebeecff,0xfebef000-0xfebeffff irq 22 at device 2.0 on pci4 Jul 23 13:24:19 knew kernel: sym0: No NVRAM, ID 7, Fast-40, LVD, parity = checking Jul 23 13:24:19 knew kernel: sa0 at sym0 bus 0 scbus7 target 1 lun 0 Jul 23 13:24:19 knew kernel: sa0: <COMPAQ SuperDLT1 5F5F> Removable = Sequential Access SCSI-2 device=20 Jul 23 13:24:19 knew kernel: sa0: Serial Number CXB46H0716 =20 Jul 23 13:24:19 knew kernel: sa0: 80.000MB/s transfers (40.000MHz, = offset 31, 16bit) Jul 23 13:24:19 knew kernel: ch0 at sym0 bus 0 scbus7 target 3 lun 0 Jul 23 13:24:19 knew kernel: ch0: <COMPAQ MSL5000 Series 0520> Removable = Changer SCSI-2 device=20 Jul 23 13:24:19 knew kernel: ch0: Serial Number 3G22JJP38S46 Jul 23 13:24:19 knew kernel: ch0: 20.000MB/s transfers (10.000MHz, = offset 15, 16bit) Jul 23 13:24:19 knew kernel: ch0: 25 slots, 1 drive, 1 picker, 1 portal Jul 23 13:24:19 knew kernel: ch0: quirks=3D0x2<NO_DVCID> This is the same tape drive on another system: LSI Logic Ultra320 (LSI20320IE) SCSI PCI-E mpt0: <LSILogic 1030 Ultra4 Adapter> port 0x8000-0x80ff mem = 0xfb220000-0xfb23ffff,0xfb200000-0xfb21ffff irq 19 at device 8.0 on = pci15 mpt0: MPI Version=3D1.2.14.0 Jul 28 16:36:31 varm kernel: sa0 at mpt0 bus 0 scbus14 target 1 lun 0 Jul 28 16:36:31 varm kernel: sa0: <COMPAQ SuperDLT1 5F5F> Removable = Sequential Access SCSI-2 device Jul 28 16:36:31 varm kernel: sa0: Serial Number CXB46H0716 =20 Jul 28 16:36:31 varm kernel: sa0: 40.000MB/s transfers (40.000MHz DT, = offset 6) Jul 28 16:37:03 varm kernel: ch0 at mpt0 bus 0 scbus14 target 3 lun 0 Jul 28 16:37:03 varm kernel: ch0: <COMPAQ MSL5000 Series 0520> Removable = Changer SCSI-2 device Jul 28 16:37:03 varm kernel: ch0: Serial Number 3G22JJP38S46 Jul 28 16:37:03 varm kernel: ch0: 3.300MB/s transfers Jul 28 16:37:03 varm kernel: ch0: 25 slots, 1 drive, 1 picker, 1 portal Jul 28 16:37:03 varm kernel: ch0: quirks=3D0x2<NO_DVCID> Thank you. =E2=80=94=20 Dan Langille http://langille.org/
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