Hi all.
I'm striving to get to work a IDE-to-USB extern box for HDD, CD-RW,
CDROM.. under Linux (SuSE 8.0)
I bought the "QTEC mobile storage 755C USB2 CD/RW CASE 5.25"
Of course it doesn't Officially support Linux and in the reference site
(www.qtec.info) there's no clue on
linux compatibility experiments..
My notebook has no support for USB2... but the device should work on
USB1.0+
I will explain in detail all that I did (even unuseful infomations,
maybe) so that you can
understand my situation.
Here's what I have (from /proc/bus/usb/devices)
USB UHCI Root Hub
Serial Number: fcc0
Speed: 12Mb/s (full)
Number of Ports: 2
Bandwidth allocated: 0 / 900 (0%)
Total number of interrupt requests: 0
Total number of isochronous requests: 0
USB Version: 1.00
Device Class: 09(hub )
Device Subclass: 00
Device Protocol: 00
Maximum Default Endpoint Size: 8
Number of Configurations: 1
Config Number: 1
Number of Interfaces: 1
Attributes: 40
MaxPower Needed: 0mA
Interface Number: 0
Name: hub
Alternate Number: 0
Class: 09(hub )
Sub Class: 0
Protocol: 0
Number of Endpoints: 1
Endpoint Address: 81
Direction: in
Attribute: 3
Type: Int.
Max Packet Size: 8
Interval: 255ms
As i thought that it should be the easier case, I started making
experiments with a IDE CDROM 8x.
Here's what I did, and the correspondig kernel messages:
(device unplugged)
hyperion:~ # modprobe usb-storage
hyperion:~ # modprobe usbcore
hyperion:~ # modprobe usbdevfs
hyperion:~ # dmesg
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
USB Mass Storage support registered.
hyperion:~ #
now i plug the device (i put the CDROM in MASTER and there's a Redhat
Linux 7.0 original CD on):
(beep)
hyperion:~ # dmesg
hub.c: USB new device connect on bus1/1, assigned device number 2
scsi0 : SCSI emulation for USB Mass Storage devices
Vendor: EagleTec Model: External Hard Di Rev: 0002
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
sda : unsupported sector size 2352.
SCSI device sda: 0 2352-byte hdwr sectors (0 MB)
usb-uhci.c: interrupt, status 3, frame# 725
sda: test WP failed, assume Write Enabled
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
hyperion:~ #
well, now i'm actually not sure on what to do.
So, i try to mount /dev/sda in /mnt/box
hyperion:~ # mount /dev/sda /mnt/box
mount: /dev/sda is not a valid block device
of course dmesg doesn't give me any clue.
what happens if i try to mount without having a CD inserted ?
hyperion:~ # mount /dev/sda /mnt/box
mount: No medium found
hyperion:~ #
interesting the kernel message:
hyperion:~ # dmesg
Device not ready. Make sure there is a disc in the drive.
VFS: Disk change detected on device sd(8,0)
usb-uhci.c: interrupt, status 3, frame# 289
sda : READ CAPACITY failed.
sda : status = 1, message = 00, host = 0, driver = 08
Current sd00:00: sns = 70 2
ASC=3a ASCQ= 0
Raw sense data:0x70 0x00 0x02 0x00 0x00 0x00 0x00 0x0a 0x00 0x00 0x00
0x00 0x3a 0x00 0x00 0x00 0x00 0x00
sda : block size assumed to be 512 bytes, disk size 1GB.
sda: I/O error: dev 08:00, sector 0
I/O error: dev 08:00, sector 0
unable to read partition table
Device not ready. Make sure there is a disc in the drive.
VFS: Disk change detected on device sd(8,0)
sda : READ CAPACITY failed.
sda : status = 1, message = 00, host = 0, driver = 08
Current sd00:00: sns = 70 2
ASC=3a ASCQ= 0
Raw sense data:0x70 0x00 0x02 0x00 0x00 0x00 0x00 0x0a 0x00 0x00 0x00
0x00 0x3a 0x00 0x00 0x00 0x00 0x00
sda : block size assumed to be 512 bytes, disk size 1GB.
sda: I/O error: dev 08:00, sector 0
I/O error: dev 08:00, sector 0
unable to read partition table
hyperion:~ #
my adventure with the CDROM stops with:
(cd reinserted)
hyperion:~ # eject -s /dev/sda
(it ejects the cd)
hyperion:~ # dmesg
VFS: Disk change detected on device sd(8,0)
sda : unsupported sector size 2352.
SCSI device sda: 0 2352-byte hdwr sectors (0 MB)
usb-uhci.c: interrupt, status 3, frame# 1555
sda: test WP failed, assume Write Enabled
sda : READ CAPACITY failed.
sda : status = 1, message = 00, host = 0, driver = 08
Current sd00:00: sns = 70 2
ASC=3a ASCQ= 0
Raw sense data:0x70 0x00 0x02 0x00 0x00 0x00 0x00 0x0a 0x00 0x00 0x00
0x00 0x3a 0x00 0x00 0x00 0x00 0x00
sda : block size assumed to be 512 bytes, disk size 1GB.
sda: test WP failed, assume Write Enabled
sda: I/O error: dev 08:00, sector 0
I/O error: dev 08:00, sector 0
unable to read partition table
Device not ready. Make sure there is a disc in the drive.
hyperion:~ #
Any advice on how to proceed ?
QUESTION: "have you tried with different CD?"
ANSWER: of course
(inserted a CD from a Magazine)
hyperion:~ # mount /dev/sda /mnt/box
/dev/sda: Input/output error
Segmentation fault
hyperion:~ # dmesg
VFS: Disk change detected on device sd(8,0)
sda : unsupported sector size 2352.
SCSI device sda: 0 2352-byte hdwr sectors (0 MB)
usb-uhci.c: interrupt, status 3, frame# 1807
sda: test WP failed, assume Write Enabled
I/O error: dev 08:00, sector 0
invalid operand: 0000
CPU: 0
EIP: 0010:[<c0136b86>] Not tainted
EFLAGS: 00210202
eax: 0000092f ebx: 00000000 ecx: 00000930 edx: c62c9000
esi: 00000800 edi: 00000800 ebp: 00000000 esp: c16dfd14
ds: 0018 es: 0018 ss: 0018
Process mount (pid: 1600, stackpage=c16df000)
Stack: 00000000 00000800 c16de000 00000930 00000000 c0134e5a 00000800
00000000
00000930 c16dfdac c191e400 c191e548 c16dfe78 0800fdf4 c0135056
00000800
00000000 00000930 c16dfe78 c367b9d6 00000800 00000000 00000930
c191e400
Call Trace: [<c0134e5a>] [<c0135056>] [<c367b9d6>] [<c01e315e>]
[<c01dd5df>]
[<c01dd8b1>] [<c01dd2ea>] [<c01df782>] [<c01dfe2f>] [<c44d5f3f>]
[<c44d63a0>]
[<c0137e18>] [<c44d6400>] [<c0146cc3>] [<c013828e>] [<c44d6400>]
[<c0147ac8>]
[<c0147e62>] [<c0147cd0>] [<c0147f00>] [<c0106db3>]
Code: 0f 0b 8b 44 24 20 05 00 fe ff ff 3d 00 0e 00 00 76 02 0f 0b
hyperion:~ #
voil�! and, i guess the CD has nothing to do with this problem. It just
gives different output every time
i mount.
If I try to remount it, it waits forever.
and, more, when I eject it..
hyperion:~ # eject -s /dev/sda
eject: unable to eject, last error: Device or resource busy
(it ejects)
hyperion:~ # dmesg
Device busy for revalidation (usage=2)
hyperion:~ #
QUESTION: "have you tried the device on other supported OS?"
ANSWER: "sure. On windows XP the CDROM is available perfectly as soon as
it is plugged"
...
well here is the report of my effort with a QUANTUM FIREBALL 8GB HD from
another PC
on which there are several partitions and Operative Sistems (also LILO
on the MBR).
1) I tried the HD (MASTER) on Windows XP and it doesn't recognize it. I
guess it's because it's a mixture of
filesistems and Operative systems. I don't use windows and I don't
know how it handles these things.
If you say that experiments worth the try, then I'll try with
different, correctly windows-formatted HD.
2) (rebooted the system from the previous try)
as usually I load usb-storage
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
USB Mass Storage support registered.
and i plug
(no beep)
hyperion:~ # dmesg
hub.c: USB new device connect on bus1/1, assigned device number 2
scsi0 : SCSI emulation for USB Mass Storage devices
Vendor: EagleTec Model: External Hard Di Rev: 0002
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
SCSI device sda: 16514064 512-byte hdwr sectors (8455 MB)
hyperion:~ #
well it seems to have recognize the size of the HD
so.. what to do?
let us look what happens few seconds later: (dmesg)
usb_control/bulk_msg: timeout
hyperion:~ #
i really don't know what it means.
I mount:
hyperion:~ # mount /dev/sda /mnt/box
(....it waits till the end of the world)
QUESTION: "hahaha are you tring to mount a HD with 8 partitions and
different FS ? hahaha.."
ANSWER: "well I'm actually not used to mount. what should I do?"
QUESTION: "why don't you fdisk and format the disk?"
ANSWER: "well.. i try with a different, less valuable HD"
with a 1.2 GB QUANTUM HD that I just bought at the flea market.
It is not reliable, I know.
(reboot)
(load the usb-storage module)
(plug the device)
(no beep)
hyperion:~ # dmesg
hub.c: USB new device connect on bus1/1, assigned device number 2
scsi0 : SCSI emulation for USB Mass Storage devices
Vendor: EagleTec Model: External Hard Di Rev: 0002
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
SCSI device sda: 2503872 512-byte hdwr sectors (1282 MB)
hyperion:~ #
as usual
usb_control/bulk_msg: timeout
hyperion:~ #
hyperion:~ # fdisk /dev/sda
(waits forever)
....what do you suggest?
Thanks in advance for any support.
Davide Venturelli
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