scsi problem with usb

scsi problem with usb

[Manish RATHI]

Hi,
I am using linux 2.6.17 for my usb controller driver in host mode for mass storage emulation. Mass storage device is detected and I got following prints


/ # INQUIRY message sent

  Vendor: Generic   Model: Flash D           Rev:     

  Type:   Direct-Access                      ANSI SCSI revision: 00

SCSI device sdb: 1024 512-byte hdwr sectors (1 MB)

sdb: Write Protect is off

sdb: assuming drive cache: write through


SCSI device sdb: 1024 512-byte hdwr sectors (1 MB)


sdb: Write Protect is off

sdb: assuming drive cache: write through

sdb:<7>usb-storage: queuecommand called

unknown partition table

sd 1:0:0:0: Attached scsi removable disk sdb

sd 1:0:0:0: Attached scsi generic sg1 type 0

INQUIRY message sent

  Vendor: Generic   Model:  AUTORUN  Disk    Rev: 8.00

  Type:   Direct-Access                      ANSI SCSI revision: 02


SCSI device sdc: 1024 512-byte hdwr sectors (1 MB)

sdc: Write Protect is on

sdc: assuming drive cache: write through


SCSI device sdc: 1024 512-byte hdwr sectors (1 MB)


sdc: Write Protect is on

sdc: assuming drive cache: write through

 sdc:<7>usb-storage: queuecommand called



 sdc1 sdc4

sd 1:0:0:1: Attached scsi disk sdc

sd 1:0:0:1: Attached scsi generic sg2 type 0



crw-r--r--    1 root     root       5,   1 Jan  1 00:01 console

crw-r--r--    1 root     root      29,   0 May 11  2006 fb0

crw-r--r--    1 root     root      89,   0 May 11  2006 i2c-0

crw-r--r--    1 root     root      89,   1 May 11  2006 i2c-1

crw-r--r--    1 root     root       1,   1 May 11  2006 mem

crw-r--r--    1 root     root      90,   0 May 11  2006 mtd0

crw-r--r--    1 root     root       1,   3 May 11  2006 null

brw-r--r--    1 root     root       8,   0 Aug 14  2006 sda

brw-r--r--    1 root     root       8,   1 Aug 14  2006 sda1

brw-r--r--    1 root     root       8,   2 Aug 14  2006 sda2

brw-r--r--    1 root     root       8,  16 Aug 14  2006 sdb

brw-r--r--    1 root     root       8,  32 Aug 14  2006 sdc

crw-r--r--    1 root     root      21,   0 Aug 14  2006 sg0

crw-r--r--    1 root     root      21,   1 Aug 14  2006 sg1

crw-r--r--    1 root     root      21,   3 Jan  1 00:01 sg3

crw-r--r--    1 root     root     204,  64 May 11  2006 ttyAMA0

crw-r--r--    1 root     root     204,  65 May 11  2006 ttyAMA1



I mounted usbfs and able to see mass storage in /proc/bus/usb/devices

However when I try to mount by
Mount -t vfat /dev/sda /mnt/pendrive then
I get error "Mounting /dev/sda on /mems failed: No such device" I tried it on sdb and sdc as well but it's not mounted.

I also tried to run fdisk /dev/sda but same type of error appears.

Can any one tell me abt possible problem?

Regards
Manish

Re: scsi problem with usb

[Julian Calaby]

On 8/14/06, Manish RATHI <manish.rathi@st.com> wrote:
> However when I try to mount by
> Mount -t vfat /dev/sda /mnt/pendrive then
> I get error "Mounting /dev/sda on /mems failed: No such device" I tried it on sdb and sdc as well but it's not mounted.
>
> I also tried to run fdisk /dev/sda but same type of error appears.

Try mounting using "/dev/sda1", rather than "/dev/sda".

The device "sda" is the *entire* disk, "sda1" is the first partition
on it - this will contain your data.

Thanks,

-- 

Julian Calaby

Email: julian.calaby@gmail.com

RE: scsi problem with usb

[Manish RATHI]

Hi,
It doesn't work with /dev/sda1 or /dev/sda2, sda3, sdb, sdc1, sdb1


brw-r--r--    1 root     root       8,   0 Aug 14  2006 sda
brw-r--r--    1 root     root       8,   1 Aug 14  2006 sda1
brw-r--r--    1 root     root       8,   2 Aug 14  2006 sda2
brw-r--r--    1 root     root       8,  16 Aug 14  2006 sdb
brw-r--r--    1 root     root       8,  17 Aug 17  2006 sdb1
brw-r--r--    1 root     root       8,  18 Aug 17  2006 sdb2
brw-r--r--    1 root     root       8,  32 Aug 14  2006 sdc
brw-r--r--    1 root     root       8,  33 Aug 17  2006 sdc1
brw-r--r--    1 root     root       8,  34 Aug 17  2006 sdc2
brw-r--r--    1 root     root       8,  35 Aug 17  2006 sdc3
brw-r--r--    1 root     root       8,  36 Aug 17  2006 sdc4
crw-r--r--    1 root     root      21,   0 Aug 14  2006 sg0
crw-r--r--    1 root     root      21,   3 Aug 14  2006 sg3

I am able to run fdisk and mkdosfs on /dev/sdb but again mount fail with "No
such device"

Thanks
Regards
Manish

-----Original Message-----
From: Julian Calaby [mailto:julian.calaby@gmail.com] 
Sent: Friday, August 18, 2006 5:36 PM
To: Manish RATHI
Cc: linux-scsi@vger.kernel.org
Subject: Re: scsi problem with usb


On 8/14/06, Manish RATHI <manish.rathi@st.com> wrote:
> However when I try to mount by
> Mount -t vfat /dev/sda /mnt/pendrive then
> I get error "Mounting /dev/sda on /mems failed: No such device" I 
> tried it on sdb and sdc as well but it's not mounted.
>
> I also tried to run fdisk /dev/sda but same type of error appears.

Try mounting using "/dev/sda1", rather than "/dev/sda".

The device "sda" is the *entire* disk, "sda1" is the first partition on it -
this will contain your data.

Thanks,

-- 

Julian Calaby

Email: julian.calaby@gmail.com

Re: scsi problem with usb

[Julian Calaby]

On 8/18/06, Manish RATHI <manish.rathi@st.com> wrote:
> Hi,
> It doesn't work with /dev/sda1 or /dev/sda2, sda3, sdb, sdc1, sdb1
>
[snip]
>
> I am able to run fdisk and mkdosfs on /dev/sdb but again mount fail with "No
> such device"

Well, sorry I couldn't help more - this is now outside of my experience.

Thanks,

-- 

Julian Calaby

Email: julian.calaby@gmail.com