Re: dac960 devices on boot-floppies
On Sat Dec 04, 1999 at 09:23:29AM +1300, Mark van Walraven wrote:
> On Thu, Dec 02, 1999 at 08:16:51AM -0700, Erik Andersen wrote:
> >
> > I put /proc/sys/dev/cdrom/info into the kernel for exactly this type of
>
> Neat. Will this be present in the Potato install kernel?
yup. I used to maintain the kernel CDROM drivers for a couple of years,
so this is not a Debian special hack. I put this into the kernel about
2.1.7x, and it has been there ever since. It is a normal and expected
part of the Uniform CDROM driver (which I made all the low-level cdrom
drivers go through for access to the VFS).
> > You can also check /proc/ide/hd?/media and if it says "cdrom", you
> > it is an ATAPI cdrom.
>
> Even better. However, I don't see /proc/ide on any of my systems ...
Hmm. What do you see for the following commands:
[andersen@slag andersen]$ uname -a
Linux slag 2.2.13 #10 Fri Nov 19 10:25:42 MST 1999 i686 unknown
[andersen@slag andersen]$ cat /proc/devices | grep ide
3 ide0
22 ide1
[andersen@slag andersen]$ cat /proc/ide/hdc/media
disk
I suspect you are either not using a nice new 2.2.x kernel, or
you have a SCSI only system.
> > it is an ATAPI cdrom. You can check /proc/scsi/scsi and if a device
> > claims it is "Type: CD-ROM" then it is. For a dac960, you can read
>
> Ah, wonderful! Presumably anything "Type: Direct-Access" is safe as
> an install target - can anyone with a SCSI tape or CD writer confirm?
[root@dillweed andersen]# modprobe ide-scsi sr_mod
[root@dillweed andersen]# dmesg | tail -n4
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
scsi : 1 host.
Vendor: PHILIPS Model: CDD3610 CD-R/RW Rev: 3.01
Type: CD-ROM ANSI SCSI revision: 02
I don't have a tape handy, but at least for CD-R/RW you are safe
with that assumption...
> > claims it is "Type: CD-ROM" then it is. For a dac960, you can read
> > /proc/rd/c0/current_status, and it'll tell you lots of interesting
>
> Unfortunately I don't have a dac960, and no longer have access to a
> smart2-equipped system. Would some kind person please email some live
> samples?
I have access to some dac960s at the ISP I used to run. I don't
have any CDROM drives (just disks), but this is what you see:
[andersen@www andersen]$ df
Filesystem Size Used Avail Use% Mounted on
/dev/hda3 5.7G 962M 4.4G 18% /
/dev/hda1 61M 3.5M 54M 6% /boot
/dev/rd/c0d0p1 17G 4.6G 11G 29% /home
[andersen@www andersen]$ ls /proc/rd/
c0/ status
[andersen@www andersen]$ cat /proc/rd/status
OK
[andersen@www andersen]$ ls /proc/rd/c0/
current_status initial_status user_command
[andersen@www andersen]$ cat /proc/rd/c0/current_status
***** DAC960 RAID Driver Version 2.2.4 of 23 August 1999 *****
Copyright 1998-1999 by Leonard N. Zubkoff <lnz@dandelion.com>
Configuring Mylex DAC960PG PCI RAID Controller
Firmware Version: 4.06-0-08, Channels: 1, Memory Size: 4MB
PCI Bus: 0, Device: 16, Function: 1, I/O Address: Unassigned
PCI Address: 0xFA8FE000 mapped at 0xD0800000, IRQ Channel: 10
Controller Queue Depth: 64, Maximum Blocks per Command: 128
Driver Queue Depth: 63, Maximum Scatter/Gather Segments: 33
Stripe Size: 64KB, Segment Size: 8KB, BIOS Geometry: 128/32
Physical Devices:
0:0 Vendor: IBM Model: DDRS-39130W Revision: S97B
Serial Number: QEJQ1513
Disk Status: Online, 17848320 blocks
0:1 Vendor: IBM Model: DDRS-39130W Revision: S97B
Serial Number: REFK6894
Disk Status: Online, 17848320 blocks
0:2 Vendor: IBM Model: DDRS-39130W Revision: S97B
Serial Number: REFM7918
Disk Status: Online, 17848320 blocks
Logical Drives:
/dev/rd/c0d0: RAID-5, Online, 35696640 blocks, Write Thru
No Rebuild or Consistency Check in Progress
[andersen@www andersen]$ cat /proc/rd/c0/initial_status
***** DAC960 RAID Driver Version 2.2.4 of 23 August 1999 *****
Copyright 1998-1999 by Leonard N. Zubkoff <lnz@dandelion.com>
Configuring Mylex DAC960PG PCI RAID Controller
Firmware Version: 4.06-0-08, Channels: 1, Memory Size: 4MB
PCI Bus: 0, Device: 16, Function: 1, I/O Address: Unassigned
PCI Address: 0xFA8FE000 mapped at 0xD0800000, IRQ Channel: 10
Controller Queue Depth: 64, Maximum Blocks per Command: 128
Driver Queue Depth: 63, Maximum Scatter/Gather Segments: 33
Stripe Size: 64KB, Segment Size: 8KB, BIOS Geometry: 128/32
Physical Devices:
0:0 Vendor: IBM Model: DDRS-39130W Revision: S97B
Serial Number: QEJQ1513
Disk Status: Online, 17848320 blocks
0:1 Vendor: IBM Model: DDRS-39130W Revision: S97B
Serial Number: REFK6894
Disk Status: Online, 17848320 blocks
0:2 Vendor: IBM Model: DDRS-39130W Revision: S97B
Serial Number: REFM7918
Disk Status: Online, 17848320 blocks
Logical Drives:
/dev/rd/c0d0: RAID-5, Online, 35696640 blocks, Write Thru
-Erik
--
Erik B. Andersen Web: http://www.xmission.com/~andersen/
email: andersee@debian.org
--This message was written using 73% post-consumer electrons--
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