udev - namedev configuration.

udev - namedev configuration.

[reg]

Ive probably missed something with the rapid evolution of udev, but
Im having a problem with the udev-008 that I just installed.

I have the configuration line:

    # USB Disk.
    LABEL, BUS="usb", vendor="IC25N020", NAME="usb_disk"

in namedev.config.  The disk in question has 4 partitions on it.

I used to see usb_disk or usb_disk1, but now Im only seeing
    
    sda
    sda1
    sda2
    sda3
    sda4

So its recognizing the disk and its partitions, but is not using the name
on the LABEL card.

What am I doing wrong?
I would expect
    usb_disk
    usb_disk1
    ...
    usb_disk4

---


                                        Reg.Clemens
                                        reg@dwf.com




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Re: udev - namedev configuration.

[Kay Sievers]

On Sun, Dec 14, 2003 at 09:51:55PM -0700, reg@dwf.com wrote:
> Ive probably missed something with the rapid evolution of udev, but
> Im having a problem with the udev-008 that I just installed.
> 
> I have the configuration line:
> 
>     # USB Disk.
>     LABEL, BUS="usb", vendor="IC25N020", NAME="usb_disk"

Is there a file named "vendor" for your disc in /sys?
If yes, what is in there?

You are missing the number replacement, otherwise only your disk
will be named and not the partitions:
NAME="usb_disk%n"


> in namedev.config.  The disk in question has 4 partitions on it.

There is no namedev.config in 008, it was renamed to
udev.config in 005 and later to udev.rules.


> I used to see usb_disk or usb_disk1, but now Im only seeing
>     
>     sda
>     sda1
>     sda2
>     sda3
>     sda4

Thats the default, no rule is matching.
Please make sure, as mentioned above if the kernel is exporting the file
"vendor" what you are trying to match against.

Please try:
REPLACE, KERNEL="sda*", NAME="usb_disk%n"
This works only for the first scsi-device, but we can see if udev is working.


> What am I doing wrong?

You can try "make DEBUG=true" an look at udev's debug in your syslog,
while connecting the disc.

thanks,
Kay



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Re: udev - namedev configuration.

[Greg KH]

On Sun, Dec 14, 2003 at 09:51:55PM -0700, reg@dwf.com wrote:
> Ive probably missed something with the rapid evolution of udev, but
> Im having a problem with the udev-008 that I just installed.
> 
> I have the configuration line:
> 
>     # USB Disk.
>     LABEL, BUS="usb", vendor="IC25N020", NAME="usb_disk"
> 
> in namedev.config.  The disk in question has 4 partitions on it.

Odds are you need to make 2 changes:
	- your device really is not on the "usb" bus, it's on the scsi
	  bus.  So you need to change the BUS="usb" to BUS="scsi".  We
	  now actually check that value.
	- you need to change the NAME rule to put the device partition
	  number in the name.  This is done with the "%n" modifier.

So the rule should probably be:
	LABEL, BUS="scsi", vendor="IC25N020", NAME="usb_disk%n"

Let us know if that works or not.

thanks,

greg k-h


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Re: udev - namedev configuration.

[reg]

> On Sun, Dec 14, 2003 at 09:51:55PM -0700, reg@dwf.com wrote:
> > Ive probably missed something with the rapid evolution of udev, but
> > Im having a problem with the udev-008 that I just installed.
> > 
> > I have the configuration line:
> > 
> >     # USB Disk.
> >     LABEL, BUS="usb", vendor="IC25N020", NAME="usb_disk"
> > 
> > in namedev.config.  The disk in question has 4 partitions on it.
> 
> Odds are you need to make 2 changes:
> 	- your device really is not on the "usb" bus, it's on the scsi
> 	  bus.  So you need to change the BUS="usb" to BUS="scsi".  We
> 	  now actually check that value.
> 	- you need to change the NAME rule to put the device partition
> 	  number in the name.  This is done with the "%n" modifier.
> 
> So the rule should probably be:
> 	LABEL, BUS="scsi", vendor="IC25N020", NAME="usb_disk%n"
> 
> Let us know if that works or not.
> 

Thanks, the "scsi" did it (I had alredy added the %n).

But tell me, I understand the hardware SCSI emulation that is going on here),
but how do you determine that this is a SCSI device, when there are
pointers up and over into PCI from both /sysfs/bus/usb/drivers and
/sysfs/bus/scsi/drivers for the same device?


-- 
                                        Reg.Clemens
                                        reg@dwf.com




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Re: udev - namedev configuration.

[Greg KH]

On Mon, Dec 15, 2003 at 05:53:54PM -0700, reg@dwf.com wrote:
> 
> But tell me, I understand the hardware SCSI emulation that is going on here),
> but how do you determine that this is a SCSI device, when there are
> pointers up and over into PCI from both /sysfs/bus/usb/drivers and
> /sysfs/bus/scsi/drivers for the same device?

What does the device link from the block device point to?  A scsi
device, right?  That's what we are caring about, not the individual
devices along the usb to scsi device chain.

thanks,

greg k-h


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