problem mounting a partition on a usb drive

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* problem mounting a partition on a usb drive
@ 2006-01-27 12:33 Bahadir Balban
  2006-01-27 12:58 ` Gentoopower
  0 siblings, 1 reply; 3+ messages in thread
From: Bahadir Balban @ 2006-01-27 12:33 UTC (permalink / raw)
  To: linux-ide

Hi,

I am trying to mount a usb flash disk on a platform that needs it's
usb controller and driver tested. The drive mounts on a Gentoo-2.6.11
host machine without problems:

% mount -t vfat /dev/sdc1 /mnt/usbflash

On the testing embedded linux platform (linux 2.6.9) however, it fails:
% mount -t vfat /dev/sda1 /mnt/usbflash
mount: /dev/sda1 is not a valid block device

trying /dev/sda does not help either:
% mount -t vfat /dev/sda /mnt/usbdisk
FAT: invalid media value (0xb9)
VFS: Can't find a valid FAT filesystem on dev sda.
mount: wrong fs type, bad option, bad superblock on /dev/sda, or too
many mounted file systems

On both kernels vfat partitions are enabled. I was suspecting that the
usb transactions might have been faulty on the testing platform, and
therefore not returning the right data. But,
%  dd if=/dev/sdc count=1 | hexdump -C

gives the same output on both the working platform and test platforms.
Outputs given below.

If the outputs are the same, what what's the problem on one of the
machines? If the vfat partition table below is not valid, why would it
mount successfully on one of the machines?

Many thanks,
Bahadir


Output on GentooLinux-2.6.11, with working usb controller and driver,
and successful mount:
% dd if=/dev/sdc count=1 | hexdump -C

1+0 records in
1+0 records out
00000000  33 c0 8e d0 bc 00 7c fb  50 07 50 1f fc be 1b 7c  |3.....|.P.P....||
00000010  bf 1b 06 50 57 b9 e5 01  f3 a4 cb be be 07 b1 04  |...PW...........|
00000020  38 2c 7c 09 75 15 83 c6  10 e2 f5 cd 18 8b 14 8b  |8,|.u...........|
00000030  ee 83 c6 10 49 74 16 38  2c 74 f6 be 10 07 4e ac  |....It.8,t....N.|
00000040  3c 00 74 fa bb 07 00 b4  0e cd 10 eb f2 89 46 25  |<.t...........F%|
00000050  96 8a 46 04 b4 06 3c 0e  74 11 b4 0b 3c 0c 74 05  |..F...<.t...<.t.|
00000060  3a c4 75 2b 40 c6 46 25  06 75 24 bb aa 55 50 b4  |:.u+@.F%.u$..UP.|
00000070  41 cd 13 58 72 16 81 fb  55 aa 75 10 f6 c1 01 74  |A..Xr...U.u....t|
00000080  0b 8a e0 88 56 24 c7 06  a1 06 eb 1e 88 66 04 bf  |....V$.......f..|
00000090  0a 00 b8 01 02 8b dc 33  c9 83 ff 05 7f 03 8b 4e  |.......3.......N|
000000a0  25 03 4e 02 cd 13 72 29  be 46 07 81 3e fe 7d 55  |%.N...r).F..>.}U|
000000b0  aa 74 5a 83 ef 05 7f da  85 f6 75 83 be 27 07 eb  |.tZ.......u..'..|
000000c0  8a 98 91 52 99 03 46 08  13 56 0a e8 12 00 5a eb  |...R..F..V....Z.|
000000d0  d5 4f 74 e4 33 c0 cd 13  eb b8 00 00 00 00 00 00  |.Ot.3...........|
000000e0  56 33 f6 56 56 52 50 06  53 51 be 10 00 56 8b f4  |V3.VVRP.SQ...V..|
000000f0  50 52 b8 00 42 8a 56 24  cd 13 5a 58 8d 64 10 72  |PR..B.V$..ZX.d.r|
00000100  0a 40 75 01 42 80 c7 02  e2 f7 f8 5e c3 eb 74 49  |.@u.B......^..tI|
00000110  6e 76 61 6c 69 64 20 70  61 72 74 69 74 69 6f 6e  |nvalid partition|
00000120  20 74 61 62 6c 65 00 45  72 72 6f 72 20 6c 6f 61  | table.Error loa|
00000130  64 69 6e 67 20 6f 70 65  72 61 74 69 6e 67 20 73  |ding operating s|
00000140  79 73 74 65 6d 00 4d 69  73 73 69 6e 67 20 6f 70  |ystem.Missing op|
00000150  65 72 61 74 69 6e 67 20  73 79 73 74 65 6d 00 00  |erating system..|
00000160  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000180  00 00 00 8b fc 1e 57 8b  f5 cb 00 00 00 00 00 00  |......W.........|
00000190  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000001b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 80 01  |................|
000001c0  01 00 04 05 3f a7 3f 00  00 00 d1 f7 00 00 00 00  |....?.?.........|
000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|


Output on embedded linux platform - its usb driver/controller are
subject to testing:
% dd if=/dev/sda count=1 | hexdump

1+0 records in
1+0 records out
00000000: 33 C0 8E D0 BC 00 7C FB 50 07 50 1F FC BE 1B 7C  3@.P<.|{P.P.|>.|
00000010: BF 1B 06 50 57 B9 E5 01 F3 A4 CB BE BE 07 B1 04  ?..PW9e.s$K>>.1.
00000020: 38 2C 7C 09 75 15 83 C6 10 E2 F5 CD 18 8B 14 8B  8,|.u..F.buM....
00000030: EE 83 C6 10 49 74 16 38 2C 74 F6 BE 10 07 4E AC  n.F.It.8,tv>..N,
00000040: 3C 00 74 FA BB 07 00 B4 0E CD 10 EB F2 89 46 25  <.tz;..4.M.kr.F%
00000050: 96 8A 46 04 B4 06 3C 0E 74 11 B4 0B 3C 0C 74 05  ..F.4.<.t.4.<.t.
00000060: 3A C4 75 2B 40 C6 46 25 06 75 24 BB AA 55 50 B4  :Du+@FF%.u$;*UP4
00000070: 41 CD 13 58 72 16 81 FB 55 AA 75 10 F6 C1 01 74  AM.Xr..{U*u.vA.t
00000080: 0B 8A E0 88 56 24 C7 06 A1 06 EB 1E 88 66 04 BF  ..`.V$G.!.k..f.?
00000090: 0A 00 B8 01 02 8B DC 33 C9 83 FF 05 7F 03 8B 4E  ..8...\3I......N
000000A0: 25 03 4E 02 CD 13 72 29 BE 46 07 81 3E FE 7D 55  %.N.M.r)>F..>~}U
000000B0: AA 74 5A 83 EF 05 7F DA 85 F6 75 83 BE 27 07 EB  *tZ.o..Z.vu.>'.k
000000C0: 8A 98 91 52 99 03 46 08 13 56 0A E8 12 00 5A EB  ...R..F..V.h..Zk
000000D0: D5 4F 74 E4 33 C0 CD 13 EB B8 00 00 00 00 00 00  UOtd3@M.k8......
000000E0: 56 33 F6 56 56 52 50 06 53 51 BE 10 00 56 8B F4  V3vVVRP.SQ>..V.t
000000F0: 50 52 B8 00 42 8A 56 24 CD 13 5A 58 8D 64 10 72  PR8.B.V$M.ZX.d.r
00000100: 0A 40 75 01 42 80 C7 02 E2 F7 F8 5E C3 EB 74 49  .@u.B.G.bwx^CktI
00000110: 6E 76 61 6C 69 64 20 70 61 72 74 69 74 69 6F 6E  nvalid partition
00000120: 20 74 61 62 6C 65 00 45 72 72 6F 72 20 6C 6F 61   table.Error loa
00000130: 64 69 6E 67 20 6F 70 65 72 61 74 69 6E 67 20 73  ding operating s
00000140: 79 73 74 65 6D 00 4D 69 73 73 69 6E 67 20 6F 70  ystem.Missing op
00000150: 65 72 61 74 69 6E 67 20 73 79 73 74 65 6D 00 00  erating system..
00000160: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000170: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000180: 00 00 00 8B FC 1E 57 8B F5 CB 00 00 00 00 00 00  ....|.W.uK......
00000190: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 01  ................
000001C0: 01 00 04 05 3F A7 3F 00 00 00 D1 F7 00 00 00 00  ....?'?...Qw....
000001D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 AA  ..............U*

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: problem mounting a partition on a usb drive
  2006-01-27 12:33 problem mounting a partition on a usb drive Bahadir Balban
@ 2006-01-27 12:58 ` Gentoopower
  2006-01-27 14:56   ` Bahadir Balban
  0 siblings, 1 reply; 3+ messages in thread
From: Gentoopower @ 2006-01-27 12:58 UTC (permalink / raw)
  To: Bahadir Balban; +Cc: linux-ide

Can we see your kernel config.

I suspect there is no support compiled in for usb storage devices.


Bahadir Balban wrote:
> Hi,
>
> I am trying to mount a usb flash disk on a platform that needs it's
> usb controller and driver tested. The drive mounts on a Gentoo-2.6.11
> host machine without problems:
>
> % mount -t vfat /dev/sdc1 /mnt/usbflash
>
> On the testing embedded linux platform (linux 2.6.9) however, it fails:
> % mount -t vfat /dev/sda1 /mnt/usbflash
> mount: /dev/sda1 is not a valid block device
>
> trying /dev/sda does not help either:
> % mount -t vfat /dev/sda /mnt/usbdisk
> FAT: invalid media value (0xb9)
> VFS: Can't find a valid FAT filesystem on dev sda.
> mount: wrong fs type, bad option, bad superblock on /dev/sda, or too
> many mounted file systems
>
> On both kernels vfat partitions are enabled. I was suspecting that the
> usb transactions might have been faulty on the testing platform, and
> therefore not returning the right data. But,
> %  dd if=/dev/sdc count=1 | hexdump -C
>
> gives the same output on both the working platform and test platforms.
> Outputs given below.
>
> If the outputs are the same, what what's the problem on one of the
> machines? If the vfat partition table below is not valid, why would it
> mount successfully on one of the machines?
>
> Many thanks,
> Bahadir
>
>
> Output on GentooLinux-2.6.11, with working usb controller and driver,
> and successful mount:
> % dd if=/dev/sdc count=1 | hexdump -C
>
> 1+0 records in
> 1+0 records out
> 00000000  33 c0 8e d0 bc 00 7c fb  50 07 50 1f fc be 1b 7c  |3.....|.P.P....||
> 00000010  bf 1b 06 50 57 b9 e5 01  f3 a4 cb be be 07 b1 04  |...PW...........|
> 00000020  38 2c 7c 09 75 15 83 c6  10 e2 f5 cd 18 8b 14 8b  |8,|.u...........|
> 00000030  ee 83 c6 10 49 74 16 38  2c 74 f6 be 10 07 4e ac  |....It.8,t....N.|
> 00000040  3c 00 74 fa bb 07 00 b4  0e cd 10 eb f2 89 46 25  |<.t...........F%|
> 00000050  96 8a 46 04 b4 06 3c 0e  74 11 b4 0b 3c 0c 74 05  |..F...<.t...<.t.|
> 00000060  3a c4 75 2b 40 c6 46 25  06 75 24 bb aa 55 50 b4  |:.u+@.F%.u$..UP.|
> 00000070  41 cd 13 58 72 16 81 fb  55 aa 75 10 f6 c1 01 74  |A..Xr...U.u....t|
> 00000080  0b 8a e0 88 56 24 c7 06  a1 06 eb 1e 88 66 04 bf  |....V$.......f..|
> 00000090  0a 00 b8 01 02 8b dc 33  c9 83 ff 05 7f 03 8b 4e  |.......3.......N|
> 000000a0  25 03 4e 02 cd 13 72 29  be 46 07 81 3e fe 7d 55  |%.N...r).F..>.}U|
> 000000b0  aa 74 5a 83 ef 05 7f da  85 f6 75 83 be 27 07 eb  |.tZ.......u..'..|
> 000000c0  8a 98 91 52 99 03 46 08  13 56 0a e8 12 00 5a eb  |...R..F..V....Z.|
> 000000d0  d5 4f 74 e4 33 c0 cd 13  eb b8 00 00 00 00 00 00  |.Ot.3...........|
> 000000e0  56 33 f6 56 56 52 50 06  53 51 be 10 00 56 8b f4  |V3.VVRP.SQ...V..|
> 000000f0  50 52 b8 00 42 8a 56 24  cd 13 5a 58 8d 64 10 72  |PR..B.V$..ZX.d.r|
> 00000100  0a 40 75 01 42 80 c7 02  e2 f7 f8 5e c3 eb 74 49  |.@u.B......^..tI|
> 00000110  6e 76 61 6c 69 64 20 70  61 72 74 69 74 69 6f 6e  |nvalid partition|
> 00000120  20 74 61 62 6c 65 00 45  72 72 6f 72 20 6c 6f 61  | table.Error loa|
> 00000130  64 69 6e 67 20 6f 70 65  72 61 74 69 6e 67 20 73  |ding operating s|
> 00000140  79 73 74 65 6d 00 4d 69  73 73 69 6e 67 20 6f 70  |ystem.Missing op|
> 00000150  65 72 61 74 69 6e 67 20  73 79 73 74 65 6d 00 00  |erating system..|
> 00000160  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
> *
> 00000180  00 00 00 8b fc 1e 57 8b  f5 cb 00 00 00 00 00 00  |......W.........|
> 00000190  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
> *
> 000001b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 80 01  |................|
> 000001c0  01 00 04 05 3f a7 3f 00  00 00 d1 f7 00 00 00 00  |....?.?.........|
> 000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
> *
> 000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
>
>
> Output on embedded linux platform - its usb driver/controller are
> subject to testing:
> % dd if=/dev/sda count=1 | hexdump
>
> 1+0 records in
> 1+0 records out
> 00000000: 33 C0 8E D0 BC 00 7C FB 50 07 50 1F FC BE 1B 7C  3@.P<.|{P.P.|>.|
> 00000010: BF 1B 06 50 57 B9 E5 01 F3 A4 CB BE BE 07 B1 04  ?..PW9e.s$K>>.1.
> 00000020: 38 2C 7C 09 75 15 83 C6 10 E2 F5 CD 18 8B 14 8B  8,|.u..F.buM....
> 00000030: EE 83 C6 10 49 74 16 38 2C 74 F6 BE 10 07 4E AC  n.F.It.8,tv>..N,
> 00000040: 3C 00 74 FA BB 07 00 B4 0E CD 10 EB F2 89 46 25  <.tz;..4.M.kr.F%
> 00000050: 96 8A 46 04 B4 06 3C 0E 74 11 B4 0B 3C 0C 74 05  ..F.4.<.t.4.<.t.
> 00000060: 3A C4 75 2B 40 C6 46 25 06 75 24 BB AA 55 50 B4  :Du+@FF%.u$;*UP4
> 00000070: 41 CD 13 58 72 16 81 FB 55 AA 75 10 F6 C1 01 74  AM.Xr..{U*u.vA.t
> 00000080: 0B 8A E0 88 56 24 C7 06 A1 06 EB 1E 88 66 04 BF  ..`.V$G.!.k..f.?
> 00000090: 0A 00 B8 01 02 8B DC 33 C9 83 FF 05 7F 03 8B 4E  ..8...\3I......N
> 000000A0: 25 03 4E 02 CD 13 72 29 BE 46 07 81 3E FE 7D 55  %.N.M.r)>F..>~}U
> 000000B0: AA 74 5A 83 EF 05 7F DA 85 F6 75 83 BE 27 07 EB  *tZ.o..Z.vu.>'.k
> 000000C0: 8A 98 91 52 99 03 46 08 13 56 0A E8 12 00 5A EB  ...R..F..V.h..Zk
> 000000D0: D5 4F 74 E4 33 C0 CD 13 EB B8 00 00 00 00 00 00  UOtd3@M.k8......
> 000000E0: 56 33 F6 56 56 52 50 06 53 51 BE 10 00 56 8B F4  V3vVVRP.SQ>..V.t
> 000000F0: 50 52 B8 00 42 8A 56 24 CD 13 5A 58 8D 64 10 72  PR8.B.V$M.ZX.d.r
> 00000100: 0A 40 75 01 42 80 C7 02 E2 F7 F8 5E C3 EB 74 49  .@u.B.G.bwx^CktI
> 00000110: 6E 76 61 6C 69 64 20 70 61 72 74 69 74 69 6F 6E  nvalid partition
> 00000120: 20 74 61 62 6C 65 00 45 72 72 6F 72 20 6C 6F 61   table.Error loa
> 00000130: 64 69 6E 67 20 6F 70 65 72 61 74 69 6E 67 20 73  ding operating s
> 00000140: 79 73 74 65 6D 00 4D 69 73 73 69 6E 67 20 6F 70  ystem.Missing op
> 00000150: 65 72 61 74 69 6E 67 20 73 79 73 74 65 6D 00 00  erating system..
> 00000160: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
> 00000170: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
> 00000180: 00 00 00 8B FC 1E 57 8B F5 CB 00 00 00 00 00 00  ....|.W.uK......
> 00000190: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
> 000001A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
> 000001B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 01  ................
> 000001C0: 01 00 04 05 3F A7 3F 00 00 00 D1 F7 00 00 00 00  ....?'?...Qw....
> 000001D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
> 000001E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
> 000001F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 AA  ..............U*
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^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: problem mounting a partition on a usb drive
  2006-01-27 12:58 ` Gentoopower
@ 2006-01-27 14:56   ` Bahadir Balban
  0 siblings, 0 replies; 3+ messages in thread
From: Bahadir Balban @ 2006-01-27 14:56 UTC (permalink / raw)
  To: Gentoopower; +Cc: linux-ide

On 1/27/06, Gentoopower <gentoopower@yahoo.de> wrote:
> Can we see your kernel config.
>
> I suspect there is no support compiled in for usb storage devices.

Hi,

I don't think this is the problem, because you need usb-storage class
transactions on the bus in order to read the disk. But still, here are
the relevant bits from 2.6.9 .config:

CONFIG_BLK_DEV_SD=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_CHR_DEV_SG=y
CONFIG_USB_STORAGE=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y

My debug method would be to insert printk's to the bit of code in the
kernel that reads the partition tables and compare the results on both
kernels. Can you think of any better ways? How do you normally debug
IDE drives?

Many thanks,
Bahadir

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2006-01-27 14:56 UTC | newest]

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2006-01-27 12:33 problem mounting a partition on a usb drive Bahadir Balban
2006-01-27 12:58 ` Gentoopower
2006-01-27 14:56   ` Bahadir Balban

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