Re: [gentoo-user] confused udev?

[Jorge Almeida <jalmeida@math.ist.utl.pt>]

On Thu, 17 Nov 2005, Dirk Heinrichs wrote:

> Am Donnerstag, 17. November 2005 13:43 schrieb ext Jorge Almeida:
> 
> > 	CONFIG_USB_STORAGE=y
> > 	(...)
> 
> Did you also enable the sub options?
No, since none appeared to have much to do with my devices.
> 
> 
> > 	usb 1-7: new high speed USB device using ehci_hcd and address 4
> > 	usb 1-7: device descriptor read/64, error -71
> > 	scsi1 : SCSI emulation for USB Mass Storage devices
> > 	usb-storage: device found at 4
> > 	usb-storage: waiting for device to settle before scanning
> > 	usb 1-7: reset high speed USB device using ehci_hcd and address 4
> > 	  Vendor: PLEXTOR   Model: PlexFlash-2       Rev: 5.02
> > 	    Type:   Direct-Access                      ANSI SCSI revision: 00
> > 	    usb 1-7: reset high speed USB device using ehci_hcd and address 4
> > 	    usb 1-7: reset high speed USB device using ehci_hcd and address 4
> > 	    usb 1-7: reset high speed USB device using ehci_hcd and address 4
> > 	    usb 1-7: reset high speed USB device using ehci_hcd and address 4
> > 	    usb 1-7: reset high speed USB device using ehci_hcd and address 4
> > 	    usb 1-7: reset high speed USB device using ehci_hcd and address 4
> > 	    sdb: Write Protect is on
> > 	    sdb: Mode Sense: 45 00 80 08
> > 	    sdb: assuming drive cache: write through
> > 	    Attached scsi removable disk sdb at scsi1, channel 0, id 0, lun 0
> > 	    usb-storage: device scan complete
> 
> I'm a bit confused about all those resets.
> 
> OK, here's the interesting part:
> 
> >0:0:0:0': BUS=="scsi"
> >     ID=="0:0:0:0"
> >     DRIVER=="sd"
> >     SYSFS{device_blocked}=="0"
> >     SYSFS{iocounterbits}=="32"
> >     SYSFS{iodone_cnt}=="0x1642"
> >     SYSFS{ioerr_cnt}=="0x0"
> >     SYSFS{iorequest_cnt}=="0x1642"
> >     SYSFS{max_sectors}=="240"
> >     SYSFS{model}=="L250R0          "
> >     SYSFS{queue_depth}=="1"
> >     SYSFS{queue_type}=="none"
> >     SYSFS{rev}=="BAH4"
> >     SYSFS{scsi_level}=="3"
> >     SYSFS{state}=="running"
> >     SYSFS{timeout}=="30"
> >     SYSFS{type}=="0"
> >     SYSFS{vendor}=="Maxtor 6"
> 
> That would give the following rule (all in one line):
> 
> BUS=="usb", KERNEL=="sd*", SYSFS{model}=="L250R0          ", 
> SYSFS{vendor}=="Maxtor 6", NAME="usb/disk%n"

Is it really BUS=="usb" rather than BUS=="scsi"?
> 
> Note the spaces in the model part, don't know wether the wildcard "*" works 
> here, too. Feel free to change the name part to whatever you like :-)
> 
> >
> > After plugging the memstick:
> >
> > 	$ udevinfo -a -p $(udevinfo -q path -n /dev/sdb)
> > 	no record for 'sdb' in database
> > 	udevinfo: option requires an argument -- p
> > 	Usage: udevinfo [-anpqrVh]
> > 	  (etc)
> 
> Hmm, this is strange. Did you check if /dev/sdb is really there? I currently 

/dev/sdb and /dev/sdb1 exist, but don't seem to be much help.
	$ ls /dev|grep sdb
	sdb
	sdb1
	sdb10
	sdb11
	sdb12
	sdb13
	sdb14
	sdb15
	sdb2
	sdb3
	sdb4
	sdb5
	sdb6
	sdb7
	sdb8
	sdb9
	
$ mount -t vfat /dev/sdb1 /mnt/pen
mount: /dev/sdb1: can't read superblock

> have no idea what could be wrong. If not already done, could you recompile 
> your kernel with all sub options of CONFIG_USB_STORAGE and see if this 
> makes any difference with the stick?
> 
Will try it...
> Bye...
> 
> 	Dirk
> 
Thanks,

Jorge 
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