Re: udev problems

["Michal Čihař" <michal@cihar.com>]

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On Sunday 07 of March 2004 15:05, Kay Sievers wrote:
> Whats in dmesg? I have the following for my cheap 4slot-reader:

[connect reader]

USB Mass Storage device found at 21
usb 1-2: USB disconnect, address 21
usb 1-2: new full speed USB device using address 22
scsi34 : SCSI emulation for USB Mass Storage devices
  Vendor: Apacer    Model: Mega Steno        Rev: 1.03
  Type:   Direct-Access                      ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi34, channel 0, id 0, lun 0
  Vendor: Apacer    Model: Mega Steno        Rev: 1.03
  Type:   Direct-Access                      ANSI SCSI revision: 02
Attached scsi removable disk sdb at scsi34, channel 0, id 0, lun 1
  Vendor: Apacer    Model: Mega Steno        Rev: 1.03
  Type:   Direct-Access                      ANSI SCSI revision: 02
Attached scsi removable disk sdc at scsi34, channel 0, id 0, lun 2
WARNING: USB Mass Storage data integrity not assured

[now I read from /dev/sda]

USB Mass Storage device found at 22
SCSI device sda: 15680 512-byte hdwr sectors (8 MB)
sda: assuming Write Enabled
sda: assuming drive cache: write through
SCSI device sda: 15680 512-byte hdwr sectors (8 MB)
sda: assuming Write Enabled
sda: assuming drive cache: write through
 sda: sda1

> sdb: Spinning up disk....ready

This doesn't happen to me. Related kernel code is in drivers/scsi/sd.c:

                /*
                 * If manual intervention is required, or this is an
                 * absent USB storage device, a spinup is meaningless.
                 */
                if (SRpnt->sr_sense_buffer[2] = NOT_READY &&
                    SRpnt->sr_sense_buffer[12] = 4 /* not ready */ &&
                    SRpnt->sr_sense_buffer[13] = 3) {
                        break;          /* manual intervention required */

                /*
                 * Issue command to spin up drive when not ready
                 */
                } else if (SRpnt->sr_sense_buffer[2] = NOT_READY) {
                        unsigned long time1;
                        if (!spintime) {
                                printk(KERN_NOTICE "%s: Spinning up disk...",
                                       diskname);
                }

- -- 
Regards
	Michal Èihaø
	http://cihar.com
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