2009-05-27 09:56:36     Device node creation problem

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2009-05-27 09:56:36     Device node creation problem

Hari Prasad (INDIA)

Message: 74650   

 

Hi,

 

When I plug my USB, sometimes device node gets created while sometimes its not created. Following is a log showing such a non-creation scenario:

 

root: /> usb 1-1: new high speed USB device using musb_hdrc and address 4

 

usb 1-1: configuration #1 chosen from 1 choice

 

scsi2 : SCSI emulation for USB Mass Storage devices

 

scsi 2:0:0:0: Direct-Access     Memorex  TD Classic 003B  PMAP PQ: 0 ANSI: 0 CCS

 

sd 2:0:0:0: [sda] 4016128 512-byte hardware sectors: (2.05 GB/1.91 GiB)

 

sd 2:0:0:0: [sda] Write Protect is off

 

sd 2:0:0:0: [sda] Assuming drive cache: write through

 

sd 2:0:0:0: [sda] 4016128 512-byte hardware sectors: (2.05 GB/1.91 GiB)

 

sd 2:0:0:0: [sda] Write Protect is off

 

sd 2:0:0:0: [sda] Assuming drive cache: write through

 

sda:<7>usb-storage: queuecommand called

 

sda1

 

sd 2:0:0:0: [sda] Attached SCSI removable disk

 

 

 

root: />

 

root: /> ls /dev/

 

bfin-otp            ram6                tty27               tty51

 

console             ram7                tty28               tty52

 

cpu_dma_latency     ram8                tty29               tty53

 

fb0                 ram9                tty3                tty54

 

full                random              tty30               tty55

 

kmsg                rtc0                tty31               tty56

 

log                 tty                 tty32               tty57

 

mem                 tty0                tty33               tty58

 

mtdblock0           tty1                tty34               tty59

 

mtdblock1           tty10               tty35               tty6

 

network_latency     tty11               tty36               tty60

 

network_throughput  tty12               tty37               tty61

 

null                tty13               tty38               tty62

 

ptmx                tty14               tty39               tty63

 

pts                 tty15               tty4                tty7

 

ram0                tty16               tty40               tty8

 

ram1                tty17               tty41               tty9

 

ram10               tty18               tty42               ttyBF0

 

ram11               tty19               tty43               urandom

 

ram12               tty2                tty44               usbdev1.1

 

ram13               tty20               tty45               usbdev1.1_ep00

 

ram14               tty21               tty46               usbdev1.1_ep81

 

ram15               tty22               tty47               vcs

 

ram2                tty23               tty48               vcsa

 

ram3                tty24               tty49               watchdog

 

ram4                tty25               tty5                zero

 

ram5                tty26               tty50

 

While the USB connect output shows the entry  sda1, there is no such entry in /dev. What could be the problem?

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2009-05-27 14:30:32     Re: Device node creation problem

Mike Frysinger (UNITED STATES)

Message: 74658   

 

try running `mdev -s`

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