Re: SATA SCSI device numbering - I'm confuzed! - Help!
From: J.A. Magallon
Date: Wed Dec 21 2005 - 19:30:40 EST
Hi....
> >On Tue, 20 Dec 2005 23:18:32 -0800, Marc Perkel <marc@xxxxxxxxxx> wrote:
> >
> >
> >
> >>OK - this really has me stumped. I have a asus A8N-SLI premium
> >>motherboard. It has 4 SATA ports on it. The ports are numbered 1 to 4.
Sure ? As I read in the boot log, you have 8 ports. Look harder ;).
> >>So somehow I asumed that port 1 would be /dev/sda ... port 4 would be
> >>/dev/sdd - but when I boot up the order is very different and doesn't
> >>make a lot of sense. How can a person predict what drives will get what
> >>device names. Sure would be handy to be able to know that.
> >>
I will cut the relevant parts of your boot log:
> libata version 1.12 loaded.
> sata_nv version 0.8
> ACPI: PCI Interrupt 0000:00:07.0[A] -> Link [APSI] -> GSI 23 (level, low) -> IRQ 217
> ata1: SATA max UDMA/133 cmd 0x9F0 ctl 0xBF2 bmdma 0xD400 irq 217
> ata2: SATA max UDMA/133 cmd 0x970 ctl 0xB72 bmdma 0xD408 irq 217
> ata1: SATA link up 1.5 Gbps (SStatus 113)
> ata1: dev 0 configured for UDMA/133
> scsi0 : sata_nv
> ata2: SATA link down (SStatus 0)
> scsi1 : sata_nv
First PCI device found has 2 ata ports, one has a drive, nothing in the other.
Note, speed is 133.
> Vendor: ATA Model: Maxtor 6B200M0 Rev: BANC
> Type: Direct-Access ANSI SCSI revision: 05
> SCSI device sda: 398297088 512-byte hdwr sectors (203928 MB)
> Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Disk found at scsi0, ie, ata1.
> ACPI: PCI Interrupt 0000:00:08.0[A] -> Link [APSJ] -> GSI 22 (level, low) -> IRQ 225
> ata3: SATA link up 1.5 Gbps (SStatus 113)
> scsi2 : sata_nv
> ata4: SATA link up 1.5 Gbps (SStatus 113)
> scsi3 : sata_nv
Next PCI device, with two more ata ports.
> Vendor: ATA Model: Maxtor 7L300S0 Rev: BANC
> Type: Direct-Access ANSI SCSI revision: 05
> SCSI device sdb: 586114704 512-byte hdwr sectors (300091 MB)
> Attached scsi disk sdb at scsi2, channel 0, id 0, lun 0
300Gb disk on scsi2 (ata3).
> Vendor: ATA Model: Maxtor 7L300S0 Rev: BANC
> Type: Direct-Access ANSI SCSI revision: 05
> SCSI device sdc: 586114704 512-byte hdwr sectors (300091 MB)
> Attached scsi disk sdc at scsi3, channel 0, id 0, lun 0
300Gb disk on scsi3 (ata4).
(BTW, why the hell the ata ports are numbered from 1 ?, just to be
different to everyone ? )
> ACPI: PCI Interrupt 0000:05:0a.0[A] -> Link [APC4] -> GSI 19 (level, low) -> IRQ 233
> ata5: SATA max UDMA/100 cmd 0xFFFFC20000006080 ctl 0xFFFFC2000000608A bmdma 0xFFFFC20000006000 irq 233
> ata6: SATA max UDMA/100 cmd 0xFFFFC200000060C0 ctl 0xFFFFC200000060CA bmdma 0xFFFFC20000006008 irq 233
> ata7: SATA max UDMA/100 cmd 0xFFFFC20000006280 ctl 0xFFFFC2000000628A bmdma 0xFFFFC20000006200 irq 233
> ata8: SATA max UDMA/100 cmd 0xFFFFC200000062C0 ctl 0xFFFFC200000062CA bmdma 0xFFFFC20000006208 irq 233
> ata5: SATA link down (SStatus 0)
> scsi4 : sata_sil
> ata6: SATA link down (SStatus 0)
> scsi5 : sata_sil
> ata7: SATA link down (SStatus 0)
> scsi6 : sata_sil
> ata8: SATA link down (SStatus 0)
> scsi7 : sata_sil
One other PCI device, but this time with _4_ SATA ports.
And note again, this are just 100 MHz ports (this is not real speed, but a comparison
with traditional ATA).
And nothing hangs on them.
So you have
- one sata 'card', speed 133, with 2 ports, one disk on the first and nothing
on the second
- one other similar card, with 2 ports, and one disk on each
- a third card, with 4 slower SATA ports (100), and nothing hung.
(when I say 'card', I mean 'pci device')
So be sure about the labeling on your board, cay you post the results
of
lspci
lspci -n
lspci -v
(All this supposing I _can_ read kernel messages... and understan them)
Take a look at this:
http://www.tomshardware.com/2005/03/23/asus_a8n/index.html
specially
http://www.tomshardware.com/2005/03/23/asus_a8n/page3.html
at the bottom of the page. You'll see your 8 sata ports.
Hope this helps.
Really curious chipset...
--
J.A. Magallon <jamagallon()able!es> \ Software is like sex:
werewolf!able!es \ It's better when it's free
Mandriva Linux release 2006.1 (Cooker) for i586
Linux 2.6.14-jam5 (gcc 4.0.2 (4.0.2-1mdk for Mandriva Linux release 2006.1))
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