2.a.30-rc7: fat filesystem misdetected as amiga

2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

Hi!
I have a disk on key with 2 partitions:
free hidden partition and after this a fat16
partition.

An attempt to mount it under linux 2.6.30-rc7 results in these messages:

usb 1-3: new high speed USB device using ehci_hcd and address 7
usb 1-3: New USB device found, idVendor=090c, idProduct=6000
usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-3: Product: USB2.0 Card Reader  
usb 1-3: Manufacturer: Generic       ,   . 
usb 1-3: SerialNumber: 0000001       
usb 1-3: configuration #1 chosen from 1 choice
Initializing USB Mass Storage driver...
scsi2 : SCSI emulation for USB Mass Storage devices
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usb-storage: device found at 7
usb-storage: waiting for device to settle before scanning
usb-storage: device scan complete
scsi 2:0:0:0: Direct-Access     Generic                   6000 PQ: 0 ANSI: 0 CCS
sd 2:0:0:0: Attached scsi generic sg2 type 0
sd 2:0:0:0: [sdb] 990976 512-byte hardware sectors: (507 MB/483 MiB)
sd 2:0:0:0: [sdb] Write Protect is off
sd 2:0:0:0: [sdb] Mode Sense: 4b 00 00 08
sd 2:0:0:0: [sdb] Assuming drive cache: write through
sd 2:0:0:0: [sdb] Assuming drive cache: write through
 sdb:<6>sd 2:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 2:0:0:0: [sdb] Sense Key : Illegal Request [current] 
sd 2:0:0:0: [sdb] Add. Sense: Logical block address out of range
end_request: I/O error, dev sdb, sector 0
Buffer I/O error on device sdb, logical block 0
Dev sdb: unable to read RDB block 0
 unable to read partition table
sd 2:0:0:0: [sdb] Attached SCSI removable disk
usb 1-3: USB disconnect, address 7

parted seems to display both partitions just fine,
and that other OS does not seem to have any trouble
accessing the disk.

The message 'unable to read RDB block' seems to come from
fs/partitions/amiga.c which looks pretty weird.

Any idea what info would be helpful in debugging this?
Just to clarify, this is not a regression - older linux versions
as far back as 2.6.24 seem to behave the same way.


-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[OGAWA Hirofumi]

"Michael S. Tsirkin" <mst@redhat.com> writes:

> An attempt to mount it under linux 2.6.30-rc7 results in these messages:
>
> usb 1-3: new high speed USB device using ehci_hcd and address 7
> usb 1-3: New USB device found, idVendor=090c, idProduct=6000
> usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> usb 1-3: Product: USB2.0 Card Reader  
> usb 1-3: Manufacturer: Generic       ,   . 
> usb 1-3: SerialNumber: 0000001       
> usb 1-3: configuration #1 chosen from 1 choice
> Initializing USB Mass Storage driver...
> scsi2 : SCSI emulation for USB Mass Storage devices
> usbcore: registered new interface driver usb-storage
> USB Mass Storage support registered.
> usb-storage: device found at 7
> usb-storage: waiting for device to settle before scanning
> usb-storage: device scan complete
> scsi 2:0:0:0: Direct-Access     Generic                   6000 PQ: 0 ANSI: 0 CCS
> sd 2:0:0:0: Attached scsi generic sg2 type 0
> sd 2:0:0:0: [sdb] 990976 512-byte hardware sectors: (507 MB/483 MiB)
> sd 2:0:0:0: [sdb] Write Protect is off
> sd 2:0:0:0: [sdb] Mode Sense: 4b 00 00 08
> sd 2:0:0:0: [sdb] Assuming drive cache: write through
> sd 2:0:0:0: [sdb] Assuming drive cache: write through
>  sdb:<6>sd 2:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> sd 2:0:0:0: [sdb] Sense Key : Illegal Request [current] 
> sd 2:0:0:0: [sdb] Add. Sense: Logical block address out of range
> end_request: I/O error, dev sdb, sector 0
> Buffer I/O error on device sdb, logical block 0
> Dev sdb: unable to read RDB block 0
>  unable to read partition table
> sd 2:0:0:0: [sdb] Attached SCSI removable disk
> usb 1-3: USB disconnect, address 7
>
> parted seems to display both partitions just fine,
> and that other OS does not seem to have any trouble
> accessing the disk.
>
> The message 'unable to read RDB block' seems to come from
> fs/partitions/amiga.c which looks pretty weird.
>
> Any idea what info would be helpful in debugging this?
> Just to clarify, this is not a regression - older linux versions
> as far back as 2.6.24 seem to behave the same way.

It seems I/O error happened while checking the partition types (sector 0).
I guess usb people may have knowledge of this. CC to linux-usb.

Thanks.
-- 
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Alan Stern]

On Mon, 25 May 2009, OGAWA Hirofumi wrote:

> "Michael S. Tsirkin" <mst@redhat.com> writes:
> 
> > An attempt to mount it under linux 2.6.30-rc7 results in these messages:
> >
> > usb 1-3: new high speed USB device using ehci_hcd and address 7
> > usb 1-3: New USB device found, idVendor=090c, idProduct=6000
> > usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> > usb 1-3: Product: USB2.0 Card Reader  
> > usb 1-3: Manufacturer: Generic       ,   . 
> > usb 1-3: SerialNumber: 0000001       
> > usb 1-3: configuration #1 chosen from 1 choice
> > Initializing USB Mass Storage driver...
> > scsi2 : SCSI emulation for USB Mass Storage devices
> > usbcore: registered new interface driver usb-storage
> > USB Mass Storage support registered.
> > usb-storage: device found at 7
> > usb-storage: waiting for device to settle before scanning
> > usb-storage: device scan complete
> > scsi 2:0:0:0: Direct-Access     Generic                   6000 PQ: 0 ANSI: 0 CCS
> > sd 2:0:0:0: Attached scsi generic sg2 type 0
> > sd 2:0:0:0: [sdb] 990976 512-byte hardware sectors: (507 MB/483 MiB)
> > sd 2:0:0:0: [sdb] Write Protect is off
> > sd 2:0:0:0: [sdb] Mode Sense: 4b 00 00 08
> > sd 2:0:0:0: [sdb] Assuming drive cache: write through
> > sd 2:0:0:0: [sdb] Assuming drive cache: write through
> >  sdb:<6>sd 2:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> > sd 2:0:0:0: [sdb] Sense Key : Illegal Request [current] 
> > sd 2:0:0:0: [sdb] Add. Sense: Logical block address out of range
> > end_request: I/O error, dev sdb, sector 0
> > Buffer I/O error on device sdb, logical block 0
> > Dev sdb: unable to read RDB block 0
> >  unable to read partition table
> > sd 2:0:0:0: [sdb] Attached SCSI removable disk
> > usb 1-3: USB disconnect, address 7
> >
> > parted seems to display both partitions just fine,
> > and that other OS does not seem to have any trouble
> > accessing the disk.
> >
> > The message 'unable to read RDB block' seems to come from
> > fs/partitions/amiga.c which looks pretty weird.
> >
> > Any idea what info would be helpful in debugging this?
> > Just to clarify, this is not a regression - older linux versions
> > as far back as 2.6.24 seem to behave the same way.
> 
> It seems I/O error happened while checking the partition types (sector 0).
> I guess usb people may have knowledge of this. CC to linux-usb.

It's hard to imagine why a device would claim that sector 0 was out of 
range!

Try collecting a usbmon trace of these events (instructions in 
Documentation/usb/usbmon.txt).

Alan Stern

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Mon, May 25, 2009 at 11:32:31AM -0400, Alan Stern wrote:
> On Mon, 25 May 2009, OGAWA Hirofumi wrote:
> 
> > "Michael S. Tsirkin" <mst@redhat.com> writes:
> > 
> > > An attempt to mount it under linux 2.6.30-rc7 results in these messages:
> > >
> > > usb 1-3: new high speed USB device using ehci_hcd and address 7
> > > usb 1-3: New USB device found, idVendor=090c, idProduct=6000
> > > usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> > > usb 1-3: Product: USB2.0 Card Reader  
> > > usb 1-3: Manufacturer: Generic       ,   . 
> > > usb 1-3: SerialNumber: 0000001       
> > > usb 1-3: configuration #1 chosen from 1 choice
> > > Initializing USB Mass Storage driver...
> > > scsi2 : SCSI emulation for USB Mass Storage devices
> > > usbcore: registered new interface driver usb-storage
> > > USB Mass Storage support registered.
> > > usb-storage: device found at 7
> > > usb-storage: waiting for device to settle before scanning
> > > usb-storage: device scan complete
> > > scsi 2:0:0:0: Direct-Access     Generic                   6000 PQ: 0 ANSI: 0 CCS
> > > sd 2:0:0:0: Attached scsi generic sg2 type 0
> > > sd 2:0:0:0: [sdb] 990976 512-byte hardware sectors: (507 MB/483 MiB)
> > > sd 2:0:0:0: [sdb] Write Protect is off
> > > sd 2:0:0:0: [sdb] Mode Sense: 4b 00 00 08
> > > sd 2:0:0:0: [sdb] Assuming drive cache: write through
> > > sd 2:0:0:0: [sdb] Assuming drive cache: write through
> > >  sdb:<6>sd 2:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> > > sd 2:0:0:0: [sdb] Sense Key : Illegal Request [current] 
> > > sd 2:0:0:0: [sdb] Add. Sense: Logical block address out of range
> > > end_request: I/O error, dev sdb, sector 0
> > > Buffer I/O error on device sdb, logical block 0
> > > Dev sdb: unable to read RDB block 0
> > >  unable to read partition table
> > > sd 2:0:0:0: [sdb] Attached SCSI removable disk
> > > usb 1-3: USB disconnect, address 7
> > >
> > > parted seems to display both partitions just fine,
> > > and that other OS does not seem to have any trouble
> > > accessing the disk.
> > >
> > > The message 'unable to read RDB block' seems to come from
> > > fs/partitions/amiga.c which looks pretty weird.
> > >
> > > Any idea what info would be helpful in debugging this?
> > > Just to clarify, this is not a regression - older linux versions
> > > as far back as 2.6.24 seem to behave the same way.
> > 
> > It seems I/O error happened while checking the partition types (sector 0).
> > I guess usb people may have knowledge of this. CC to linux-usb.
> 
> It's hard to imagine why a device would claim that sector 0 was out of 
> range!
> 
> Try collecting a usbmon trace of these events (instructions in 
> Documentation/usb/usbmon.txt).
> 
> Alan Stern

Here comes:

lsusb output:
Bus 001 Device 006: ID 090c:6000 Feiya Technology Corp. 
Bus 001 Device 001: ID 1d6b:0002  
Bus 005 Device 003: ID 10d5:55a4 Uni Class Technology Co., Ltd 
Bus 005 Device 002: ID 058f:9254 Alcor Micro Corp. Hub
Bus 005 Device 001: ID 1d6b:0001  
Bus 004 Device 001: ID 1d6b:0001  
Bus 003 Device 001: ID 1d6b:0001  
Bus 002 Device 001: ID 1d6b:0001  

First device (Feiya Technology Corp) is the disk on key.

Usbmon output from cat /sys/kernel/debug/usbmon/1u

ef488f80 3223402170 S Ci:1:001:0 s a3 00 0000 0001 0004 4 <
ef488f80 3223402177 C Ci:1:001:0 0 4 = 00010000
ef488f80 3223402180 S Ci:1:001:0 s a3 00 0000 0002 0004 4 <
ef488f80 3223402181 C Ci:1:001:0 0 4 = 00010000
ef488f80 3223402183 S Ci:1:001:0 s a3 00 0000 0003 0004 4 <
ef488f80 3223402184 C Ci:1:001:0 0 4 = 00010000
ef488f80 3223402185 S Ci:1:001:0 s a3 00 0000 0004 0004 4 <
ef488f80 3223402194 C Ci:1:001:0 0 4 = 01050100
ef488f80 3223402200 S Co:1:001:0 s 23 01 0010 0004 0000 0
ef488f80 3223402202 C Co:1:001:0 0 0
ef488f80 3223402203 S Ci:1:001:0 s a3 00 0000 0005 0004 4 <
ef488f80 3223402205 C Ci:1:001:0 0 4 = 00010000
ef488f80 3223402206 S Ci:1:001:0 s a3 00 0000 0006 0004 4 <
ef488f80 3223402208 C Ci:1:001:0 0 4 = 00010000
ef488f80 3223402209 S Ci:1:001:0 s a3 00 0000 0007 0004 4 <
ef488f80 3223402210 C Ci:1:001:0 0 4 = 00010000
ef488f80 3223402211 S Ci:1:001:0 s a3 00 0000 0008 0004 4 <
ef488f80 3223402213 C Ci:1:001:0 0 4 = 00010000
f7078c00 3223503162 S Ii:1:001:1 -115:2048 4 <
ef6c5e80 3223503176 S Ci:1:001:0 s a3 00 0000 0004 0004 4 <
ef6c5e80 3223503178 C Ci:1:001:0 0 4 = 01050000
ef6c5e80 3223503189 S Co:1:001:0 s 23 03 0004 0004 0000 0
ef6c5e80 3223503192 C Co:1:001:0 0 0
ef6c5e80 3223554164 S Ci:1:001:0 s a3 00 0000 0004 0004 4 <
ef6c5e80 3223554390 C Ci:1:001:0 0 4 = 03051000
ef6c5e80 3223605164 S Co:1:001:0 s 23 01 0014 0004 0000 0
ef6c5e80 3223605168 C Co:1:001:0 0 0
ef6c5e80 3223605176 S Ci:1:000:0 s 80 06 0100 0000 0040 64 <
ef6c5e80 3223606260 C Ci:1:000:0 0 18 = 12010002 00000040 0c090060 00010102 0301
ef6c5e80 3223606334 S Co:1:001:0 s 23 03 0004 0004 0000 0
ef6c5e80 3223606338 C Co:1:001:0 0 0
ef6c5e80 3223657167 S Ci:1:001:0 s a3 00 0000 0004 0004 4 <
ef6c5e80 3223657392 C Ci:1:001:0 0 4 = 03051000
ef6c5e80 3223708165 S Co:1:001:0 s 23 01 0014 0004 0000 0
ef6c5e80 3223708169 C Co:1:001:0 0 0
ef6c5e80 3223708171 S Co:1:000:0 s 00 05 0006 0000 0000 0
ef6c5e80 3223708263 C Co:1:000:0 0 0
ef6c5e80 3223720163 S Ci:1:006:0 s 80 06 0100 0000 0012 18 <
ef6c5e80 3223721264 C Ci:1:006:0 0 18 = 12010002 00000040 0c090060 00010102 0301
ef6c5e80 3223721288 S Ci:1:006:0 s 80 06 0200 0000 0009 9 <
ef6c5e80 3223721388 C Ci:1:006:0 0 9 = 09022000 01010080 fa
ef6c5e80 3223721407 S Ci:1:006:0 s 80 06 0200 0000 0020 32 <
ef6c5e80 3223721513 C Ci:1:006:0 0 32 = 09022000 01010080 fa090400 00020806 50000705 81020002 ff070502 020002ff
ef6c5e80 3223721539 S Ci:1:006:0 s 80 06 0300 0000 00ff 255 <
ef6c5e80 3223721638 C Ci:1:006:0 0 4 = 04030904
ef6c5e80 3223721660 S Ci:1:006:0 s 80 06 0302 0409 00ff 255 <
ef6c5e80 3223721888 C Ci:1:006:0 0 42 = 2a035500 53004200 32002e00 30002000 43006100 72006400 20005200 65006100
ef6c5e80 3223721910 S Ci:1:006:0 s 80 06 0301 0409 00ff 255 <
ef6c5e80 3223722138 C Ci:1:006:0 0 42 = 2a034700 65006e00 65007200 69006300 20002000 20002000 20002000 20002c00
ef6c5e80 3223722144 S Ci:1:006:0 s 80 06 0303 0409 00ff 255 <
ef6c5e80 3223722262 C Ci:1:006:0 0 30 = 1e033000 30003000 30003000 30003100 20002000 20002000 20002000 2000
ef6c5e80 3223722408 S Co:1:006:0 s 00 09 0001 0000 0000 0
ef6c5e80 3223722513 C Co:1:006:0 0 0
ef48ab00 3228749167 S Ci:1:006:0 s a1 fe 0000 0000 0001 1 <
ef48ab00 3228749297 C Ci:1:006:0 0 1 = 00
ef48ab00 3228749360 S Bo:1:006:2 -115 31 = 55534243 01000000 24000000 80000612 00000024 00000000 00000000 000000
ef48ab00 3228749419 C Bo:1:006:2 0 31 >
ef6bb080 3228749426 S Bi:1:006:1 -115 36 <
ef6bb080 3229275812 C Bi:1:006:1 0 36 = 00800001 1f202020 47656e65 72696320 20202020 20202020 20202020 20202020
ef48ab00 3229275820 S Bi:1:006:1 -115 13 <
ef48ab00 3229275935 C Bi:1:006:1 0 13 = 55534253 01000000 00000000 00
ef48ab00 3229277067 S Bo:1:006:2 -115 31 = 55534243 02000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3229277186 C Bo:1:006:2 0 31 >
ef48ab00 3229277192 S Bi:1:006:1 -115 13 <
ef48ab00 3229277310 C Bi:1:006:1 0 13 = 55534253 02000000 00000000 01
ef48ab00 3229277338 S Bo:1:006:2 -115 31 = 55534243 03000000 12000000 80000603 00000012 00000000 00000000 000000
ef48ab00 3229277434 C Bo:1:006:2 0 31 >
ef6bb680 3229277441 S Bi:1:006:1 -115 18 <
ef6bb680 3229277560 C Bi:1:006:1 0 18 = 70000600 0000000a 00000000 28000000 0000
ef48ab00 3229277568 S Bi:1:006:1 -115 13 <
ef48ab00 3229277685 C Bi:1:006:1 0 13 = 55534253 03000000 12000000 00
ef48ab00 3229277708 S Bo:1:006:2 -115 31 = 55534243 04000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3229277810 C Bo:1:006:2 0 31 >
ef48ab00 3229277816 S Bi:1:006:1 -115 13 <
ef48ab00 3229277935 C Bi:1:006:1 0 13 = 55534253 04000000 00000000 00
ef48ab00 3229277959 S Bo:1:006:2 -115 31 = 55534243 05000000 08000000 80000a25 00000000 00000000 00000000 000000
ef48ab00 3229278060 C Bo:1:006:2 0 31 >
ef6d6900 3229278068 S Bi:1:006:1 -115 8 <
ef6d6900 3229278185 C Bi:1:006:1 0 8 = 000f1eff 00000200
ef48ab00 3229278191 S Bi:1:006:1 -115 13 <
ef48ab00 3229278310 C Bi:1:006:1 0 13 = 55534253 05000000 08000000 00
ef48ab00 3229278345 S Bo:1:006:2 -115 31 = 55534243 06000000 c0000000 8000061a 003f00c0 00000000 00000000 000000
ef48ab00 3229278435 C Bo:1:006:2 0 31 >
ef6ba680 3229278441 S Bi:1:006:1 -115 192 <
ef6ba680 3229278811 C Bi:1:006:1 -121 76 = 4b000008 000f1f00 00000200 010a0010 00000000 03000000 051e3c00 203f0200
ef48ab00 3229278818 S Bi:1:006:1 -115 13 <
ef48ab00 3229279060 C Bi:1:006:1 0 13 = 55534253 06000000 00000000 00
ef48ab00 3229279175 S Bo:1:006:2 -115 31 = 55534243 07000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3229279310 C Bo:1:006:2 0 31 >
ef48ab00 3229279318 S Bi:1:006:1 -115 13 <
ef48ab00 3229279435 C Bi:1:006:1 0 13 = 55534253 07000000 00000000 00
ef48ab00 3229279467 S Bo:1:006:2 -115 31 = 55534243 08000000 00000000 0000061e 00000001 00000000 00000000 000000
ef48ab00 3229279560 C Bo:1:006:2 0 31 >
ef48ab00 3229279564 S Bi:1:006:1 -115 13 <
ef48ab00 3229279685 C Bi:1:006:1 0 13 = 55534253 08000000 00000000 01
ef48ab00 3229279745 S Bo:1:006:2 -115 31 = 55534243 09000000 12000000 80000603 00000012 00000000 00000000 000000
ef48ab00 3229279810 C Bo:1:006:2 0 31 >
ef727c00 3229279817 S Bi:1:006:1 -115 18 <
ef727c00 3229279935 C Bi:1:006:1 0 18 = 70000500 0000000a 00000000 24000000 0000
ef48ab00 3229279949 S Bi:1:006:1 -115 13 <
ef48ab00 3229280060 C Bi:1:006:1 0 13 = 55534253 09000000 12000000 00
ef48ab00 3229280084 S Bo:1:006:2 -115 31 = 55534243 0a000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3229280185 C Bo:1:006:2 0 31 >
ef48ab00 3229280189 S Bi:1:006:1 -115 13 <
ef48ab00 3229280310 C Bi:1:006:1 0 13 = 55534253 0a000000 00000000 00
ef48ab00 3229280331 S Bo:1:006:2 -115 31 = 55534243 0b000000 08000000 80000a25 00000000 00000000 00000000 000000
ef48ab00 3229280435 C Bo:1:006:2 0 31 >
ef727b80 3229280442 S Bi:1:006:1 -115 8 <
ef727b80 3229280560 C Bi:1:006:1 0 8 = 000f1eff 00000200
ef48ab00 3229280566 S Bi:1:006:1 -115 13 <
ef48ab00 3229280685 C Bi:1:006:1 0 13 = 55534253 0b000000 08000000 00
ef48ab00 3229280711 S Bo:1:006:2 -115 31 = 55534243 0c000000 c0000000 8000061a 003f00c0 00000000 00000000 000000
ef48ab00 3229280811 C Bo:1:006:2 0 31 >
ef727880 3229280818 S Bi:1:006:1 -115 192 <
ef727880 3229281185 C Bi:1:006:1 -121 76 = 4b000008 000f1f00 00000200 010a0010 00000000 03000000 051e3c00 203f0200
ef48ab00 3229281195 S Bi:1:006:1 -115 13 <
ef48ab00 3229281435 C Bi:1:006:1 0 13 = 55534253 0c000000 00000000 00
ef48ab00 3229281483 S Bo:1:006:2 -115 31 = 55534243 0d000000 00100000 80000a28 00000000 00000008 00000000 000000
ef48ab00 3229281560 C Bo:1:006:2 0 31 >
ef635d80 3229281567 S Bi:1:006:1 -115 4096 <
ef635d80 3229410691 C Bi:1:006:1 -32 0
ef48ab00 3229410723 S Co:1:006:0 s 02 01 0000 0081 0000 0
ef48ab00 3229410815 C Co:1:006:0 0 0
ef48ab00 3229410822 S Bi:1:006:1 -115 13 <
ef48ab00 3229410940 C Bi:1:006:1 0 13 = 55534253 0d000000 00100000 01
ef48ab00 3229410948 S Bo:1:006:2 -115 31 = 55534243 0e000000 12000000 80000603 00000012 00000000 00000000 000000
ef48ab00 3229411065 C Bo:1:006:2 0 31 >
ef6c7f00 3229411071 S Bi:1:006:1 -115 18 <
ef6c7f00 3229411190 C Bi:1:006:1 0 18 = 70000500 0000000a 00000000 21000000 0000
ef48ab00 3229411197 S Bi:1:006:1 -115 13 <
ef48ab00 3229411315 C Bi:1:006:1 0 13 = 55534253 0e000000 12000000 00
ef48ab00 3229411387 S Bo:1:006:2 -115 31 = 55534243 0f000000 00100000 80000a28 00000000 00000008 00000000 000000
ef48ab00 3229411439 C Bo:1:006:2 0 31 >
ef6c7e00 3229411497 S Bi:1:006:1 -115 4096 <
ef6c7e00 3229412314 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef48ab00 3229412831 S Bi:1:006:1 -115 13 <
ef48ab00 3229412939 C Bi:1:006:1 0 13 = 55534253 0f000000 00000000 00
ef48ab00 3230430319 S Bo:1:006:2 -115 31 = 55534243 10000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3230430348 C Bo:1:006:2 0 31 >
ef48ab00 3230430379 S Bi:1:006:1 -115 13 <
ef48ab00 3230430471 C Bi:1:006:1 0 13 = 55534253 10000000 00000000 00
ef48ab00 3230431082 S Bo:1:006:2 -115 31 = 55534243 11000000 00100000 80000a28 00000000 00000008 00000000 000000
ef48ab00 3230431221 C Bo:1:006:2 0 31 >
ef5f8500 3230431228 S Bi:1:006:1 -115 4096 <
ef5f8500 3230431971 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef48ab00 3230431978 S Bi:1:006:1 -115 13 <
ef48ab00 3230432102 C Bi:1:006:1 0 13 = 55534253 11000000 00000000 00
ef48ab00 3230432134 S Bo:1:006:2 -115 31 = 55534243 12000000 00300000 80000a28 00000000 08000018 00000000 000000
ef48ab00 3230432221 C Bo:1:006:2 0 31 >
ef5f8500 3230432262 S Bi:1:006:1 -115 4096 <
ef5f8600 3230432265 S Bi:1:006:1 -115 4096 <
ef5f8780 3230432266 S Bi:1:006:1 -115 4096 <
ef5f8500 3230433346 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef5f8600 3230433348 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef5f8780 3230433349 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
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f70a7700 3232445586 S Bi:1:006:1 -115 4096 <
ef5cce00 3232445587 S Bi:1:006:1 -115 4096 <
ef5ccc80 3232445588 S Bi:1:006:1 -115 4096 <
ef5c0000 3232445589 S Bi:1:006:1 -115 4096 <
ef756e00 3232451162 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef756a00 3232451164 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef756580 3232451165 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef756380 3232451167 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef756100 3232451168 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef756500 3232451169 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef756180 3232451170 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef756c80 3232451172 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef756780 3232451173 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef633f00 3232451174 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef633800 3232451175 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef633980 3232451177 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef633e80 3232451178 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0f80 3232451179 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0480 3232451180 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0100 3232456285 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0180 3232456287 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0b00 3232456288 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0800 3232456289 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0400 3232456290 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0900 3232456292 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0880 3232456293 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0200 3232456294 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0680 3232456295 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef6b0c00 3232456296 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
f70a7c00 3232456298 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
f70a7700 3232456299 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef5cce00 3232456300 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef5ccc80 3232456301 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef5c0000 3232456303 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef48ab00 3232456314 S Bi:1:006:1 -115 13 <
ef48ab00 3232456409 C Bi:1:006:1 0 13 = 55534253 48000000 00000000 00
ef48ab00 3232456557 S Bo:1:006:2 -115 31 = 55534243 49000000 00200100 80000a28 00000001 50000090 00000000 000000
ef48ab00 3232456660 C Bo:1:006:2 0 31 >
ef5c0f00 3232456672 S Bi:1:006:1 -115 4096 <
ef5c0b00 3232456674 S Bi:1:006:1 -115 4096 <
ef5c0d00 3232456676 S Bi:1:006:1 -115 4096 <
ef5c0400 3232456677 S Bi:1:006:1 -115 4096 <
f649b080 3232456678 S Bi:1:006:1 -115 4096 <
f649b180 3232456679 S Bi:1:006:1 -115 4096 <
f649b800 3232456681 S Bi:1:006:1 -115 4096 <
f649b980 3232456682 S Bi:1:006:1 -115 4096 <
f649b100 3232456683 S Bi:1:006:1 -115 4096 <
f649b380 3232456684 S Bi:1:006:1 -115 4096 <
f649b600 3232456685 S Bi:1:006:1 -115 4096 <
ef592000 3232456687 S Bi:1:006:1 -115 4096 <
efbaca00 3232456688 S Bi:1:006:1 -115 4096 <
efbac600 3232456689 S Bi:1:006:1 -115 4096 <
efbac700 3232456690 S Bi:1:006:1 -115 4096 <
efbac880 3232456691 S Bi:1:006:1 -115 4096 <
efbacb00 3232456693 S Bi:1:006:1 -115 4096 <
efbac900 3232456694 S Bi:1:006:1 -115 4096 <
ef5c0f00 3232462164 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef5c0b00 3232462166 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef5c0d00 3232462167 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef5c0400 3232462168 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
f649b080 3232462169 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
f649b180 3232462171 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
f649b800 3232462172 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
f649b980 3232462173 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
f649b100 3232462174 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
f649b380 3232462175 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
f649b600 3232462177 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef592000 3232462178 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
efbaca00 3232462179 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
efbac600 3232462180 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
efbac700 3232462181 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
efbac880 3232462183 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
efbacb00 3232462909 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
efbac900 3232462911 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ef48ab00 3232462920 S Bi:1:006:1 -115 13 <
ef48ab00 3232463035 C Bi:1:006:1 0 13 = 55534253 49000000 00000000 00
ef48ab00 3232463062 S Bo:1:006:2 -115 31 = 55534243 4a000000 00100000 80000a28 00000002 00000008 00000000 000000
ef48ab00 3232463160 C Bo:1:006:2 0 31 >
efbaca00 3232463167 S Bi:1:006:1 -115 4096 <
efbaca00 3232464035 C Bi:1:006:1 0 4096 = 2e202020 20202020 20202010 0000c062 833f833f 0000c062 833f0200 00000000
ef48ab00 3232464041 S Bi:1:006:1 -115 13 <
ef48ab00 3232464160 C Bi:1:006:1 0 13 = 55534253 4a000000 00000000 00
ef48ab00 3234427230 S Bo:1:006:2 -115 31 = 55534243 4b000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3234427347 C Bo:1:006:2 0 31 >
ef48ab00 3234427353 S Bi:1:006:1 -115 13 <
ef48ab00 3234427471 C Bi:1:006:1 0 13 = 55534253 4b000000 00000000 00
ef48ab00 3236427640 S Bo:1:006:2 -115 31 = 55534243 4c000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3236427785 C Bo:1:006:2 0 31 >
ef48ab00 3236427793 S Bi:1:006:1 -115 13 <
ef48ab00 3236427908 C Bi:1:006:1 0 13 = 55534253 4c000000 00000000 00
ef48ab00 3238427327 S Bo:1:006:2 -115 31 = 55534243 4d000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3238427471 C Bo:1:006:2 0 31 >
ef48ab00 3238427479 S Bi:1:006:1 -115 13 <
ef48ab00 3238427595 C Bi:1:006:1 0 13 = 55534253 4d000000 00000000 00
ef48ab00 3240427749 S Bo:1:006:2 -115 31 = 55534243 4e000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3240427783 C Bo:1:006:2 0 31 >
ef48ab00 3240427803 S Bi:1:006:1 -115 13 <
ef48ab00 3240427908 C Bi:1:006:1 0 13 = 55534253 4e000000 00000000 00
ef48ab00 3242427408 S Bo:1:006:2 -115 31 = 55534243 4f000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3242427471 C Bo:1:006:2 0 31 >
ef48ab00 3242427478 S Bi:1:006:1 -115 13 <
ef48ab00 3242427595 C Bi:1:006:1 0 13 = 55534253 4f000000 00000000 00
ef48ab00 3244427744 S Bo:1:006:2 -115 31 = 55534243 50000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3244427783 C Bo:1:006:2 0 31 >
ef48ab00 3244427789 S Bi:1:006:1 -115 13 <
ef48ab00 3244427907 C Bi:1:006:1 0 13 = 55534253 50000000 00000000 00
ef48ab00 3246427418 S Bo:1:006:2 -115 31 = 55534243 51000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3246427470 C Bo:1:006:2 0 31 >
ef48ab00 3246427478 S Bi:1:006:1 -115 13 <
ef48ab00 3246427594 C Bi:1:006:1 0 13 = 55534253 51000000 00000000 00
ef48ab00 3248427761 S Bo:1:006:2 -115 31 = 55534243 52000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3248427909 C Bo:1:006:2 0 31 >
ef48ab00 3248427916 S Bi:1:006:1 -115 13 <
ef48ab00 3248428031 C Bi:1:006:1 0 13 = 55534253 52000000 00000000 00
ef48ab00 3250427456 S Bo:1:006:2 -115 31 = 55534243 53000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3250427595 C Bo:1:006:2 0 31 >
ef48ab00 3250427603 S Bi:1:006:1 -115 13 <
ef48ab00 3250427719 C Bi:1:006:1 0 13 = 55534253 53000000 00000000 00
ef48ab00 3252427872 S Bo:1:006:2 -115 31 = 55534243 54000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3252427907 C Bo:1:006:2 0 31 >
ef48ab00 3252427929 S Bi:1:006:1 -115 13 <
ef48ab00 3252428031 C Bi:1:006:1 0 13 = 55534253 54000000 00000000 00
ef48ab00 3254427569 S Bo:1:006:2 -115 31 = 55534243 55000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3254427593 C Bo:1:006:2 0 31 >
ef48ab00 3254427622 S Bi:1:006:1 -115 13 <
ef48ab00 3254427718 C Bi:1:006:1 0 13 = 55534253 55000000 00000000 00
ef48ab00 3256427916 S Bo:1:006:2 -115 31 = 55534243 56000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3256428032 C Bo:1:006:2 0 31 >
ef48ab00 3256428040 S Bi:1:006:1 -115 13 <
ef48ab00 3256428155 C Bi:1:006:1 0 13 = 55534253 56000000 00000000 00
ef48ab00 3258427324 S Bo:1:006:2 -115 31 = 55534243 57000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3258427470 C Bo:1:006:2 0 31 >
ef48ab00 3258427478 S Bi:1:006:1 -115 13 <
ef48ab00 3258427592 C Bi:1:006:1 0 13 = 55534253 57000000 00000000 00
ef48ab00 3260427751 S Bo:1:006:2 -115 31 = 55534243 58000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3260427781 C Bo:1:006:2 0 31 >
ef48ab00 3260427805 S Bi:1:006:1 -115 13 <
ef48ab00 3260427905 C Bi:1:006:1 0 13 = 55534253 58000000 00000000 00
ef48ab00 3262427400 S Bo:1:006:2 -115 31 = 55534243 59000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3262427468 C Bo:1:006:2 0 31 >
ef48ab00 3262427476 S Bi:1:006:1 -115 13 <
ef48ab00 3262427592 C Bi:1:006:1 0 13 = 55534253 59000000 00000000 00
ef48ab00 3264427743 S Bo:1:006:2 -115 31 = 55534243 5a000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3264427780 C Bo:1:006:2 0 31 >
ef48ab00 3264427787 S Bi:1:006:1 -115 13 <
ef48ab00 3264427904 C Bi:1:006:1 0 13 = 55534253 5a000000 00000000 00
ef48ab00 3266427427 S Bo:1:006:2 -115 31 = 55534243 5b000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3266427469 C Bo:1:006:2 0 31 >
ef48ab00 3266427476 S Bi:1:006:1 -115 13 <
ef48ab00 3266427592 C Bi:1:006:1 0 13 = 55534253 5b000000 00000000 00
ef48ab00 3268427666 S Bo:1:006:2 -115 31 = 55534243 5c000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3268427794 C Bo:1:006:2 0 31 >
ef48ab00 3268427802 S Bi:1:006:1 -115 13 <
ef48ab00 3268427904 C Bi:1:006:1 0 13 = 55534253 5c000000 00000000 00
ef48ab00 3270427551 S Bo:1:006:2 -115 31 = 55534243 5d000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3270427593 C Bo:1:006:2 0 31 >
ef48ab00 3270427616 S Bi:1:006:1 -115 13 <
ef48ab00 3270427716 C Bi:1:006:1 0 13 = 55534253 5d000000 00000000 00
ef48ab00 3272427792 S Bo:1:006:2 -115 31 = 55534243 5e000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3272427905 C Bo:1:006:2 0 31 >
ef48ab00 3272427912 S Bi:1:006:1 -115 13 <
ef48ab00 3272428028 C Bi:1:006:1 0 13 = 55534253 5e000000 00000000 00
ef48ab00 3274427649 S Bo:1:006:2 -115 31 = 55534243 5f000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3274427717 C Bo:1:006:2 0 31 >
ef48ab00 3274427725 S Bi:1:006:1 -115 13 <
ef48ab00 3274427841 C Bi:1:006:1 0 13 = 55534253 5f000000 00000000 00
ef48ab00 3276427306 S Bo:1:006:2 -115 31 = 55534243 60000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3276427404 C Bo:1:006:2 0 31 >
ef48ab00 3276427411 S Bi:1:006:1 -115 13 <
ef48ab00 3276427527 C Bi:1:006:1 0 13 = 55534253 60000000 00000000 00
ef48ab00 3278427601 S Bo:1:006:2 -115 31 = 55534243 61000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3278427717 C Bo:1:006:2 0 31 >
ef48ab00 3278427725 S Bi:1:006:1 -115 13 <
ef48ab00 3278427840 C Bi:1:006:1 0 13 = 55534253 61000000 00000000 00
ef48ab00 3280427464 S Bo:1:006:2 -115 31 = 55534243 62000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3280427528 C Bo:1:006:2 0 31 >
ef48ab00 3280427536 S Bi:1:006:1 -115 13 <
ef48ab00 3280427652 C Bi:1:006:1 0 13 = 55534253 62000000 00000000 00
ef48ab00 3282427712 S Bo:1:006:2 -115 31 = 55534243 63000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3282427840 C Bo:1:006:2 0 31 >
ef48ab00 3282427847 S Bi:1:006:1 -115 13 <
ef48ab00 3282427965 C Bi:1:006:1 0 13 = 55534253 63000000 00000000 00
ef48ab00 3284427525 S Bo:1:006:2 -115 31 = 55534243 64000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3284427653 C Bo:1:006:2 0 31 >
ef48ab00 3284427660 S Bi:1:006:1 -115 13 <
ef48ab00 3284427776 C Bi:1:006:1 0 13 = 55534253 64000000 00000000 00
ef48ab00 3286427836 S Bo:1:006:2 -115 31 = 55534243 65000000 00000000 00000600 00000000 00000000 00000000 000000
ef48ab00 3286427965 C Bo:1:006:2 0 31 >
ef48ab00 3286427971 S Bi:1:006:1 -115 13 <
ef48ab00 3286428089 C Bi:1:006:1 0 13 = 55534253 65000000 00000000 00



-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Kay Sievers]

On Mon, May 25, 2009 at 20:48, Michael S. Tsirkin <mst@redhat.com> wrote:

>> > > Dev sdb: unable to read RDB block 0

Is this Fedora? Or are you running a recent version of DeviceKit-disks?

We've seen such problems when trying to issue SAT commands to some USB
devices. If it's Fedora, this is fixed with an update to Fedora 11.

Kay

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Mon, May 25, 2009 at 09:32:27PM +0200, Kay Sievers wrote:
> On Mon, May 25, 2009 at 20:48, Michael S. Tsirkin <mst@redhat.com> wrote:
> 
> >> > > Dev sdb: unable to read RDB block 0
> 
> Is this Fedora? Or are you running a recent version of DeviceKit-disks?
> 
> We've seen such problems when trying to issue SAT commands to some USB
> devices. If it's Fedora, this is fixed with an update to Fedora 11.
> 
> Kay

This is 2.6.30-rc6 from kernel.org.

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Kay Sievers]

On Mon, May 25, 2009 at 21:50, Michael S. Tsirkin <mst@redhat.com> wrote:
> On Mon, May 25, 2009 at 09:32:27PM +0200, Kay Sievers wrote:
>> On Mon, May 25, 2009 at 20:48, Michael S. Tsirkin <mst@redhat.com> wrote:
>>
>> >> > > Dev sdb: unable to read RDB block 0
>>
>> Is this Fedora? Or are you running a recent version of DeviceKit-disks?
>>
>> We've seen such problems when trying to issue SAT commands to some USB
>> devices. If it's Fedora, this is fixed with an update to Fedora 11.

> This is 2.6.30-rc6 from kernel.org.

I mean userspace not the kernel. We've seen this triggered by
userspace on any recent kernel, and there is nothing wrong with the
kernel in the cases we've seen. Do you run DeviceKit-disks or Fedora
11?

Thanks,
Kay

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Mon, May 25, 2009 at 10:00:45PM +0200, Kay Sievers wrote:
> On Mon, May 25, 2009 at 21:50, Michael S. Tsirkin <mst@redhat.com> wrote:
> > On Mon, May 25, 2009 at 09:32:27PM +0200, Kay Sievers wrote:
> >> On Mon, May 25, 2009 at 20:48, Michael S. Tsirkin <mst@redhat.com> wrote:
> >>
> >> >> > > Dev sdb: unable to read RDB block 0
> >>
> >> Is this Fedora? Or are you running a recent version of DeviceKit-disks?
> >>
> >> We've seen such problems when trying to issue SAT commands to some USB
> >> devices. If it's Fedora, this is fixed with an update to Fedora 11.
> 
> > This is 2.6.30-rc6 from kernel.org.
> 
> I mean userspace not the kernel. We've seen this triggered by
> userspace on any recent kernel, and there is nothing wrong with the
> kernel in the cases we've seen. Do you run DeviceKit-disks or Fedora
> 11?

I see this on fedora 10.

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Alan Stern]

On Mon, 25 May 2009, Michael S. Tsirkin wrote:

> On Mon, May 25, 2009 at 11:32:31AM -0400, Alan Stern wrote:
> > On Mon, 25 May 2009, OGAWA Hirofumi wrote:
> > 
> > > "Michael S. Tsirkin" <mst@redhat.com> writes:
> > > 
> > > > An attempt to mount it under linux 2.6.30-rc7 results in these messages:
> > > >
> > > > usb 1-3: new high speed USB device using ehci_hcd and address 7
> > > > usb 1-3: New USB device found, idVendor=090c, idProduct=6000
> > > > usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> > > > usb 1-3: Product: USB2.0 Card Reader  
> > > > usb 1-3: Manufacturer: Generic       ,   . 
> > > > usb 1-3: SerialNumber: 0000001       
> > > > usb 1-3: configuration #1 chosen from 1 choice
> > > > Initializing USB Mass Storage driver...
> > > > scsi2 : SCSI emulation for USB Mass Storage devices
> > > > usbcore: registered new interface driver usb-storage
> > > > USB Mass Storage support registered.
> > > > usb-storage: device found at 7
> > > > usb-storage: waiting for device to settle before scanning
> > > > usb-storage: device scan complete
> > > > scsi 2:0:0:0: Direct-Access     Generic                   6000 PQ: 0 ANSI: 0 CCS
> > > > sd 2:0:0:0: Attached scsi generic sg2 type 0
> > > > sd 2:0:0:0: [sdb] 990976 512-byte hardware sectors: (507 MB/483 MiB)
> > > > sd 2:0:0:0: [sdb] Write Protect is off
> > > > sd 2:0:0:0: [sdb] Mode Sense: 4b 00 00 08
> > > > sd 2:0:0:0: [sdb] Assuming drive cache: write through
> > > > sd 2:0:0:0: [sdb] Assuming drive cache: write through
> > > >  sdb:<6>sd 2:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> > > > sd 2:0:0:0: [sdb] Sense Key : Illegal Request [current] 
> > > > sd 2:0:0:0: [sdb] Add. Sense: Logical block address out of range
> > > > end_request: I/O error, dev sdb, sector 0
> > > > Buffer I/O error on device sdb, logical block 0
> > > > Dev sdb: unable to read RDB block 0
> > > >  unable to read partition table
> > > > sd 2:0:0:0: [sdb] Attached SCSI removable disk
> > > > usb 1-3: USB disconnect, address 7
> > > >
> > > > parted seems to display both partitions just fine,
> > > > and that other OS does not seem to have any trouble
> > > > accessing the disk.
> > > >
> > > > The message 'unable to read RDB block' seems to come from
> > > > fs/partitions/amiga.c which looks pretty weird.
> > > >
> > > > Any idea what info would be helpful in debugging this?
> > > > Just to clarify, this is not a regression - older linux versions
> > > > as far back as 2.6.24 seem to behave the same way.
> > > 
> > > It seems I/O error happened while checking the partition types (sector 0).
> > > I guess usb people may have knowledge of this. CC to linux-usb.
> > 
> > It's hard to imagine why a device would claim that sector 0 was out of 
> > range!
> > 
> > Try collecting a usbmon trace of these events (instructions in 
> > Documentation/usb/usbmon.txt).
> > 
> > Alan Stern
> 
> Here comes:
> 
> lsusb output:
> Bus 001 Device 006: ID 090c:6000 Feiya Technology Corp. 
> Bus 001 Device 001: ID 1d6b:0002  
> Bus 005 Device 003: ID 10d5:55a4 Uni Class Technology Co., Ltd 
> Bus 005 Device 002: ID 058f:9254 Alcor Micro Corp. Hub
> Bus 005 Device 001: ID 1d6b:0001  
> Bus 004 Device 001: ID 1d6b:0001  
> Bus 003 Device 001: ID 1d6b:0001  
> Bus 002 Device 001: ID 1d6b:0001  
> 
> First device (Feiya Technology Corp) is the disk on key.
> 
> Usbmon output from cat /sys/kernel/debug/usbmon/1u

(... Uninteresting parts removed ...)

Here is the command preceding the one that failed.  It is a MODE
SENSE(6) command for 192 bytes; the device replies with 76 bytes and
then fails to set the residue appropriately -- not a good sign but 
plenty of other devices have the same bug.

> ef48ab00 3229280711 S Bo:1:006:2 -115 31 = 55534243 0c000000 c0000000 8000061a 003f00c0 00000000 00000000 000000
> ef48ab00 3229280811 C Bo:1:006:2 0 31 >
> ef727880 3229280818 S Bi:1:006:1 -115 192 <
> ef727880 3229281185 C Bi:1:006:1 -121 76 = 4b000008 000f1f00 00000200 010a0010 00000000 03000000 051e3c00 203f0200
> ef48ab00 3229281195 S Bi:1:006:1 -115 13 <
> ef48ab00 3229281435 C Bi:1:006:1 0 13 = 55534253 0c000000 00000000 00

Next comes the very first READ(10) command.  It asks for 8 sectors 
starting at sector 0:

> ef48ab00 3229281483 S Bo:1:006:2 -115 31 = 55534243 0d000000 00100000 80000a28 00000000 00000008 00000000 000000
> ef48ab00 3229281560 C Bo:1:006:2 0 31 >
> ef635d80 3229281567 S Bi:1:006:1 -115 4096 <
> ef635d80 3229410691 C Bi:1:006:1 -32 0
> ef48ab00 3229410723 S Co:1:006:0 s 02 01 0000 0081 0000 0
> ef48ab00 3229410815 C Co:1:006:0 0 0
> ef48ab00 3229410822 S Bi:1:006:1 -115 13 <
> ef48ab00 3229410940 C Bi:1:006:1 0 13 = 55534253 0d000000 00100000 01

The command fails.  The computer then sends a REQUEST SENSE command to 
find out why:

> ef48ab00 3229410948 S Bo:1:006:2 -115 31 = 55534243 0e000000 12000000 80000603 00000012 00000000 00000000 000000
> ef48ab00 3229411065 C Bo:1:006:2 0 31 >
> ef6c7f00 3229411071 S Bi:1:006:1 -115 18 <
> ef6c7f00 3229411190 C Bi:1:006:1 0 18 = 70000500 0000000a 00000000 21000000 0000
> ef48ab00 3229411197 S Bi:1:006:1 -115 13 <
> ef48ab00 3229411315 C Bi:1:006:1 0 13 = 55534253 0e000000 12000000 00

The device responds with Sense Key = 5 (Illegal Request) and ASC =
0x21 (Logical Block Address Out of Range), as mentioned in the log.  
Oddly enough, the residue value for this REQUEST SENSE result is set to 
18, so perhaps that means we shouldn't believe any of the sense data!  
(More likely it means the residue values are totally bogus...)

Regardless, this causes the read of the partition table to fail.  But
the next command sent by the computer is another READ(10) for 8 sectors
starting at sector 0, and this time it works!

> ef48ab00 3229411387 S Bo:1:006:2 -115 31 = 55534243 0f000000 00100000 80000a28 00000000 00000008 00000000 000000
> ef48ab00 3229411439 C Bo:1:006:2 0 31 >
> ef6c7e00 3229411497 S Bi:1:006:1 -115 4096 <
> ef6c7e00 3229412314 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> ef48ab00 3229412831 S Bi:1:006:1 -115 13 <
> ef48ab00 3229412939 C Bi:1:006:1 0 13 = 55534253 0f000000 00000000 00

So apparently this is a bug in the device; it doesn't respond correctly
to the first READ command.  But since it does respond correctly to 
later commands, everything works okay thereafter.  You ought to be able 
to recover from the error by running

	blockdev --rereadpt /dev/sdb

manually.

As far as I can tell, this has nothing to do with any user programs in 
the distribution.  It appears to be entirely the device's fault.

Alan Stern

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Kay Sievers]

On Mon, May 25, 2009 at 22:37, Alan Stern <stern@rowland.harvard.edu> wrote:

> As far as I can tell, this has nothing to do with any user programs in
> the distribution.  It appears to be entirely the device's fault.

Sounds good. Maybe we can just double-check.

Michael, if you do:
  killall udevd
do you see the same issue when connecting the device?

That would tell us if some userspace tool is involved here, which
hooks into the udev events.

You can just start udev again by:
  udevd -d

Thanks,
Kay

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Mon, May 25, 2009 at 04:37:59PM -0400, Alan Stern wrote:
> On Mon, 25 May 2009, Michael S. Tsirkin wrote:
> 
> > On Mon, May 25, 2009 at 11:32:31AM -0400, Alan Stern wrote:
> > > On Mon, 25 May 2009, OGAWA Hirofumi wrote:
> > > 
> > > > "Michael S. Tsirkin" <mst@redhat.com> writes:
> > > > 
> > > > > An attempt to mount it under linux 2.6.30-rc7 results in these messages:
> > > > >
> > > > > usb 1-3: new high speed USB device using ehci_hcd and address 7
> > > > > usb 1-3: New USB device found, idVendor=090c, idProduct=6000
> > > > > usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> > > > > usb 1-3: Product: USB2.0 Card Reader  
> > > > > usb 1-3: Manufacturer: Generic       ,   . 
> > > > > usb 1-3: SerialNumber: 0000001       
> > > > > usb 1-3: configuration #1 chosen from 1 choice
> > > > > Initializing USB Mass Storage driver...
> > > > > scsi2 : SCSI emulation for USB Mass Storage devices
> > > > > usbcore: registered new interface driver usb-storage
> > > > > USB Mass Storage support registered.
> > > > > usb-storage: device found at 7
> > > > > usb-storage: waiting for device to settle before scanning
> > > > > usb-storage: device scan complete
> > > > > scsi 2:0:0:0: Direct-Access     Generic                   6000 PQ: 0 ANSI: 0 CCS
> > > > > sd 2:0:0:0: Attached scsi generic sg2 type 0
> > > > > sd 2:0:0:0: [sdb] 990976 512-byte hardware sectors: (507 MB/483 MiB)
> > > > > sd 2:0:0:0: [sdb] Write Protect is off
> > > > > sd 2:0:0:0: [sdb] Mode Sense: 4b 00 00 08
> > > > > sd 2:0:0:0: [sdb] Assuming drive cache: write through
> > > > > sd 2:0:0:0: [sdb] Assuming drive cache: write through
> > > > >  sdb:<6>sd 2:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> > > > > sd 2:0:0:0: [sdb] Sense Key : Illegal Request [current] 
> > > > > sd 2:0:0:0: [sdb] Add. Sense: Logical block address out of range
> > > > > end_request: I/O error, dev sdb, sector 0
> > > > > Buffer I/O error on device sdb, logical block 0
> > > > > Dev sdb: unable to read RDB block 0
> > > > >  unable to read partition table
> > > > > sd 2:0:0:0: [sdb] Attached SCSI removable disk
> > > > > usb 1-3: USB disconnect, address 7
> > > > >
> > > > > parted seems to display both partitions just fine,
> > > > > and that other OS does not seem to have any trouble
> > > > > accessing the disk.
> > > > >
> > > > > The message 'unable to read RDB block' seems to come from
> > > > > fs/partitions/amiga.c which looks pretty weird.
> > > > >
> > > > > Any idea what info would be helpful in debugging this?
> > > > > Just to clarify, this is not a regression - older linux versions
> > > > > as far back as 2.6.24 seem to behave the same way.
> > > > 
> > > > It seems I/O error happened while checking the partition types (sector 0).
> > > > I guess usb people may have knowledge of this. CC to linux-usb.
> > > 
> > > It's hard to imagine why a device would claim that sector 0 was out of 
> > > range!
> > > 
> > > Try collecting a usbmon trace of these events (instructions in 
> > > Documentation/usb/usbmon.txt).
> > > 
> > > Alan Stern
> > 
> > Here comes:
> > 
> > lsusb output:
> > Bus 001 Device 006: ID 090c:6000 Feiya Technology Corp. 
> > Bus 001 Device 001: ID 1d6b:0002  
> > Bus 005 Device 003: ID 10d5:55a4 Uni Class Technology Co., Ltd 
> > Bus 005 Device 002: ID 058f:9254 Alcor Micro Corp. Hub
> > Bus 005 Device 001: ID 1d6b:0001  
> > Bus 004 Device 001: ID 1d6b:0001  
> > Bus 003 Device 001: ID 1d6b:0001  
> > Bus 002 Device 001: ID 1d6b:0001  
> > 
> > First device (Feiya Technology Corp) is the disk on key.
> > 
> > Usbmon output from cat /sys/kernel/debug/usbmon/1u
> 
> (... Uninteresting parts removed ...)
> 
> Here is the command preceding the one that failed.  It is a MODE
> SENSE(6) command for 192 bytes; the device replies with 76 bytes and
> then fails to set the residue appropriately -- not a good sign but 
> plenty of other devices have the same bug.
> 
> > ef48ab00 3229280711 S Bo:1:006:2 -115 31 = 55534243 0c000000 c0000000 8000061a 003f00c0 00000000 00000000 000000
> > ef48ab00 3229280811 C Bo:1:006:2 0 31 >
> > ef727880 3229280818 S Bi:1:006:1 -115 192 <
> > ef727880 3229281185 C Bi:1:006:1 -121 76 = 4b000008 000f1f00 00000200 010a0010 00000000 03000000 051e3c00 203f0200
> > ef48ab00 3229281195 S Bi:1:006:1 -115 13 <
> > ef48ab00 3229281435 C Bi:1:006:1 0 13 = 55534253 0c000000 00000000 00
> 
> Next comes the very first READ(10) command.  It asks for 8 sectors 
> starting at sector 0:
> 
> > ef48ab00 3229281483 S Bo:1:006:2 -115 31 = 55534243 0d000000 00100000 80000a28 00000000 00000008 00000000 000000
> > ef48ab00 3229281560 C Bo:1:006:2 0 31 >
> > ef635d80 3229281567 S Bi:1:006:1 -115 4096 <
> > ef635d80 3229410691 C Bi:1:006:1 -32 0
> > ef48ab00 3229410723 S Co:1:006:0 s 02 01 0000 0081 0000 0
> > ef48ab00 3229410815 C Co:1:006:0 0 0
> > ef48ab00 3229410822 S Bi:1:006:1 -115 13 <
> > ef48ab00 3229410940 C Bi:1:006:1 0 13 = 55534253 0d000000 00100000 01
> 
> The command fails.  The computer then sends a REQUEST SENSE command to 
> find out why:
> 
> > ef48ab00 3229410948 S Bo:1:006:2 -115 31 = 55534243 0e000000 12000000 80000603 00000012 00000000 00000000 000000
> > ef48ab00 3229411065 C Bo:1:006:2 0 31 >
> > ef6c7f00 3229411071 S Bi:1:006:1 -115 18 <
> > ef6c7f00 3229411190 C Bi:1:006:1 0 18 = 70000500 0000000a 00000000 21000000 0000
> > ef48ab00 3229411197 S Bi:1:006:1 -115 13 <
> > ef48ab00 3229411315 C Bi:1:006:1 0 13 = 55534253 0e000000 12000000 00
> 
> The device responds with Sense Key = 5 (Illegal Request) and ASC =
> 0x21 (Logical Block Address Out of Range), as mentioned in the log.  
> Oddly enough, the residue value for this REQUEST SENSE result is set to 
> 18, so perhaps that means we shouldn't believe any of the sense data!  
> (More likely it means the residue values are totally bogus...)
> 
> Regardless, this causes the read of the partition table to fail.  But
> the next command sent by the computer is another READ(10) for 8 sectors
> starting at sector 0, and this time it works!
> 
> > ef48ab00 3229411387 S Bo:1:006:2 -115 31 = 55534243 0f000000 00100000 80000a28 00000000 00000008 00000000 000000
> > ef48ab00 3229411439 C Bo:1:006:2 0 31 >
> > ef6c7e00 3229411497 S Bi:1:006:1 -115 4096 <
> > ef6c7e00 3229412314 C Bi:1:006:1 0 4096 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> > ef48ab00 3229412831 S Bi:1:006:1 -115 13 <
> > ef48ab00 3229412939 C Bi:1:006:1 0 13 = 55534253 0f000000 00000000 00
> 
> So apparently this is a bug in the device; it doesn't respond correctly
> to the first READ command.  But since it does respond correctly to 
> later commands, everything works okay thereafter.  You ought to be able 
> to recover from the error by running
> 
> 	blockdev --rereadpt /dev/sdb
> 
> manually.

Yes, this helps.
Would it make sense for kernel to retry automatically?
Why doesn't it?

> As far as I can tell, this has nothing to do with any user programs in 
> the distribution.  It appears to be entirely the device's fault.
> 
> Alan Stern

BTW, any idea how come I later get errors apparently from amiga fs?

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Mon, May 25, 2009 at 10:41:11PM +0200, Kay Sievers wrote:
> On Mon, May 25, 2009 at 22:37, Alan Stern <stern@rowland.harvard.edu> wrote:
> 
> > As far as I can tell, this has nothing to do with any user programs in
> > the distribution.  It appears to be entirely the device's fault.
> 
> Sounds good. Maybe we can just double-check.
> 
> Michael, if you do:
>   killall udevd
> do you see the same issue when connecting the device?
> 
> That would tell us if some userspace tool is involved here, which
> hooks into the udev events.
> 
> You can just start udev again by:
>   udevd -d
> 
> Thanks,
> Kay

Same thing.

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Alan Stern]

On Mon, 25 May 2009, Michael S. Tsirkin wrote:

> > So apparently this is a bug in the device; it doesn't respond correctly
> > to the first READ command.  But since it does respond correctly to 
> > later commands, everything works okay thereafter.  You ought to be able 
> > to recover from the error by running
> > 
> > 	blockdev --rereadpt /dev/sdb
> > 
> > manually.
> 
> Yes, this helps.
> Would it make sense for kernel to retry automatically?
> Why doesn't it?

I don't know the details in this case.  Most likely the error code 
(Logical Block Address Out of Range) is interpreted as a fatal 
non-retryable error.  For other sorts of errors, the kernel does retry.

> > As far as I can tell, this has nothing to do with any user programs in 
> > the distribution.  It appears to be entirely the device's fault.
> > 
> > Alan Stern
> 
> BTW, any idea how come I later get errors apparently from amiga fs?

Not a clue.  Unless it was some odd side effect of the partition code 
trying to interpret an uninitialized buffer.

Alan Stern

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Mon, May 25, 2009 at 05:08:12PM -0400, Alan Stern wrote:
> On Mon, 25 May 2009, Michael S. Tsirkin wrote:
> 
> > > So apparently this is a bug in the device; it doesn't respond correctly
> > > to the first READ command.  But since it does respond correctly to 
> > > later commands, everything works okay thereafter.  You ought to be able 
> > > to recover from the error by running
> > > 
> > > 	blockdev --rereadpt /dev/sdb
> > > 
> > > manually.
> > 
> > Yes, this helps.
> > Would it make sense for kernel to retry automatically?
> > Why doesn't it?
> 
> I don't know the details in this case.  Most likely the error code 
> (Logical Block Address Out of Range) is interpreted as a fatal 
> non-retryable error.  For other sorts of errors, the kernel does retry.

Who would know? The scsi crowd?

> > > As far as I can tell, this has nothing to do with any user programs in 
> > > the distribution.  It appears to be entirely the device's fault.
> > > 
> > > Alan Stern
> > 
> > BTW, any idea how come I later get errors apparently from amiga fs?
> 
> Not a clue.  Unless it was some odd side effect of the partition code 
> trying to interpret an uninitialized buffer.
> 
> Alan Stern

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Mon, May 25, 2009 at 05:08:12PM -0400, Alan Stern wrote:
> On Mon, 25 May 2009, Michael S. Tsirkin wrote:
> 
> > > So apparently this is a bug in the device; it doesn't respond correctly
> > > to the first READ command.  But since it does respond correctly to 
> > > later commands, everything works okay thereafter.  You ought to be able 
> > > to recover from the error by running
> > > 
> > > 	blockdev --rereadpt /dev/sdb
> > > 
> > > manually.
> > 
> > Yes, this helps.
> > Would it make sense for kernel to retry automatically?
> > Why doesn't it?
> 
> I don't know the details in this case.  Most likely the error code 
> (Logical Block Address Out of Range) is interpreted as a fatal 
> non-retryable error.  For other sorts of errors, the kernel does retry.
> 
> > > As far as I can tell, this has nothing to do with any user programs in 
> > > the distribution.  It appears to be entirely the device's fault.
> > > 
> > > Alan Stern
> > 
> > BTW, any idea how come I later get errors apparently from amiga fs?
> 
> Not a clue.  Unless it was some odd side effect of the partition code 
> trying to interpret an uninitialized buffer.
> 
> Alan Stern


So, the following works for me as a work-around.  But it's probably not
the appropriate way to solve the problem. Or is it? Can someone who
understands partitions and filesystems tell?



block: retry on I/O error when reading partition table

Retry once on an I/O error when reading the partition table:
there's no much to loose, and this helps with some disk on
key devices I have.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

---

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 99e33ef..28b857a 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -510,25 +510,34 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
 	struct hd_struct *part;
 	struct parsed_partitions *state;
 	int p, highest, res;
+	int i;
 
 	if (bdev->bd_part_count)
 		return -EBUSY;
-	res = invalidate_partition(disk, 0);
-	if (res)
-		return res;
-
-	disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);
-	while ((part = disk_part_iter_next(&piter)))
-		delete_partition(disk, part->partno);
-	disk_part_iter_exit(&piter);
 
-	if (disk->fops->revalidate_disk)
-		disk->fops->revalidate_disk(disk);
-	check_disk_size_change(disk, bdev);
-	bdev->bd_invalidated = 0;
-	if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))
-		return 0;
-	if (IS_ERR(state))	/* I/O error reading the partition table */
+	/* Michael S. Tsirkin has a disk on key where rescanning helps. */
+#define RESCAN_RETRY_CNT 2
+	for (i = 0; i < RESCAN_RETRY_CNT; ++i) {
+		res = invalidate_partition(disk, 0);
+		if (res)
+			return res;
+
+		disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);
+		while ((part = disk_part_iter_next(&piter)))
+			delete_partition(disk, part->partno);
+		disk_part_iter_exit(&piter);
+
+		if (disk->fops->revalidate_disk)
+			disk->fops->revalidate_disk(disk);
+		check_disk_size_change(disk, bdev);
+		bdev->bd_invalidated = 0;
+		if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))
+			return 0;
+		if (!IS_ERR(state))
+			break;
+		/* I/O error reading the partition table. Retry. */
+	}
+	if (IS_ERR(state)) /* I/O error reading the partition table */
 		return -EIO;
 
 	/* tell userspace that the media / partition table may have changed */

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Andries E. Brouwer]

On Tue, May 26, 2009 at 12:47:55AM +0300, Michael S. Tsirkin wrote:
> On Mon, May 25, 2009 at 05:08:12PM -0400, Alan Stern wrote:
>> On Mon, 25 May 2009, Michael S. Tsirkin wrote:
>> 
>>>> So apparently this is a bug in the device; it doesn't respond correctly
>>>> to the first READ command.  But since it does respond correctly to 
>>>> later commands, everything works okay thereafter.  You ought to be able 
>>>> to recover from the error by running
>>>> 
>>>> 	blockdev --rereadpt /dev/sdb
>>>> 
>>>> manually.
>>> 
>>> Yes, this helps.
>>> Would it make sense for kernel to retry automatically?
>>> Why doesn't it?
>> 
>> I don't know the details in this case.  Most likely the error code 
>> (Logical Block Address Out of Range) is interpreted as a fatal 
>> non-retryable error.  For other sorts of errors, the kernel does retry.
>> 
>>>> As far as I can tell, this has nothing to do with any user programs in 
>>>> the distribution.  It appears to be entirely the device's fault.
>>>> 
>>>> Alan Stern
>>> 
>>> BTW, any idea how come I later get errors apparently from amiga fs?
>> 
>> Not a clue.  Unless it was some odd side effect of the partition code 
>> trying to interpret an uninitialized buffer.
>> 
>> Alan Stern

Comments:

The partition reading code tries one by one all partition types that
you have configured. If amigafs is one of these, also that will be tried.

I can imagine that your device is a slow starter and needs some time
to initialize itself, so that the first, or the first few, commands fail,
and after that all is well.

I hate retrying code. Such code is the reason that boot time increases
all the time. Usually a read failure is missing media or so, and retrying
is totally meaningless. Only at the lowest level should a retry be done,
and preferably not blindly "let us try a few times" but only when there
is a positive reason to expect that a second time might fare better.

(Amiga is not usually the first or second to be tried, so if it fails
then either the first few reads fail, or the first read failure is cached.)

Andries


> So, the following works for me as a work-around.  But it's probably not
> the appropriate way to solve the problem. Or is it? Can someone who
> understands partitions and filesystems tell?
> 
> 
> 
> block: retry on I/O error when reading partition table
> 
> Retry once on an I/O error when reading the partition table:
> there's no much to loose, and this helps with some disk on
> key devices I have.
> 
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Kay Sievers]

On Tue, May 26, 2009 at 00:31, Andries E. Brouwer
<Andries.Brouwer@cwi.nl> wrote:

> I can imagine that your device is a slow starter and needs some time
> to initialize itself, so that the first, or the first few, commands fail,
> and after that all is well.

Michael, what's the value of:
  /sys/module/usb_storage/parameters/delay_use
?

If that is less than 5 seconds, care to try if setting it to 5 makes
any difference?

Kay

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Oliver Neukum]

Am Montag, 25. Mai 2009 23:47:55 schrieb Michael S. Tsirkin:
> So, the following works for me as a work-around.  But it's probably not
> the appropriate way to solve the problem. Or is it? Can someone who
> understands partitions and filesystems tell?

If you are sure it is only the first failing, rather than a timing issue,
it is better to have a new quirk type that issues a dummy read in the storage
driver.

	Regards
		Oliver

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Ming Lei]

2009/5/26 Kay Sievers <kay.sievers@vrfy.org>:
> On Tue, May 26, 2009 at 00:31, Andries E. Brouwer
> <Andries.Brouwer@cwi.nl> wrote:
>
>> I can imagine that your device is a slow starter and needs some time
>> to initialize itself, so that the first, or the first few, commands fail,
>> and after that all is well.
>
> Michael, what's the value of:
>  /sys/module/usb_storage/parameters/delay_use
> ?

>From the usbmon trace, we can find that delay_use should be 5sec, so
nothing to do with it.

ef6c5e80 3223722144 S Ci:1:006:0 s 80 06 0303 0409 00ff 255 <
ef6c5e80 3223722262 C Ci:1:006:0 0 30 = 1e033000 30003000 30003000
30003100 20002000 20002000 20002000 2000
ef6c5e80 3223722408 S Co:1:006:0 s 00 09 0001 0000 0000 0
ef6c5e80 3223722513 C Co:1:006:0 0 0
------------------------------delay
5sec----------------------------------------------------
ef48ab00 3228749167 S Ci:1:006:0 s a1 fe 0000 0000 0001 1 <
ef48ab00 3228749297 C Ci:1:006:0 0 1 = 00


-- 
Lei Ming

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Tue, May 26, 2009 at 01:05:00AM +0200, Kay Sievers wrote:
> On Tue, May 26, 2009 at 00:31, Andries E. Brouwer
> <Andries.Brouwer@cwi.nl> wrote:
> 
> > I can imagine that your device is a slow starter and needs some time
> > to initialize itself, so that the first, or the first few, commands fail,
> > and after that all is well.
> 
> Michael, what's the value of:
>   /sys/module/usb_storage/parameters/delay_use
> ?
> 
> If that is less than 5 seconds, care to try if setting it to 5 makes
> any difference?
> 
> Kay

It's 5 already.

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Tue, May 26, 2009 at 12:31:20AM +0200, Andries E. Brouwer wrote:
> On Tue, May 26, 2009 at 12:47:55AM +0300, Michael S. Tsirkin wrote:
> > On Mon, May 25, 2009 at 05:08:12PM -0400, Alan Stern wrote:
> >> On Mon, 25 May 2009, Michael S. Tsirkin wrote:
> >> 
> >>>> So apparently this is a bug in the device; it doesn't respond correctly
> >>>> to the first READ command.  But since it does respond correctly to 
> >>>> later commands, everything works okay thereafter.  You ought to be able 
> >>>> to recover from the error by running
> >>>> 
> >>>> 	blockdev --rereadpt /dev/sdb
> >>>> 
> >>>> manually.
> >>> 
> >>> Yes, this helps.
> >>> Would it make sense for kernel to retry automatically?
> >>> Why doesn't it?
> >> 
> >> I don't know the details in this case.  Most likely the error code 
> >> (Logical Block Address Out of Range) is interpreted as a fatal 
> >> non-retryable error.  For other sorts of errors, the kernel does retry.
> >> 
> >>>> As far as I can tell, this has nothing to do with any user programs in 
> >>>> the distribution.  It appears to be entirely the device's fault.
> >>>> 
> >>>> Alan Stern
> >>> 
> >>> BTW, any idea how come I later get errors apparently from amiga fs?
> >> 
> >> Not a clue.  Unless it was some odd side effect of the partition code 
> >> trying to interpret an uninitialized buffer.
> >> 
> >> Alan Stern
> 
> Comments:
> 
> The partition reading code tries one by one all partition types that
> you have configured. If amigafs is one of these, also that will be tried.
> 
> I can imagine that your device is a slow starter and needs some time
> to initialize itself, so that the first, or the first few, commands fail,
> and after that all is well.
> 
> I hate retrying code. Such code is the reason that boot time increases
> all the time. Usually a read failure is missing media or so, and retrying
> is totally meaningless. Only at the lowest level should a retry be done,
> and preferably not blindly "let us try a few times" but only when there
> is a positive reason to expect that a second time might fare better.

Yea. But I don't know where that is.
I noted that if I stick a loop around check_partition
I just get the error reported each time.


> (Amiga is not usually the first or second to be tried, so if it fails
> then either the first few reads fail, or the first read failure is cached.)

Maybe it shouldn't printk stuff on IO failure when probing for
partitions then.

> Andries
> 
> 
> > So, the following works for me as a work-around.  But it's probably not
> > the appropriate way to solve the problem. Or is it? Can someone who
> > understands partitions and filesystems tell?
> > 
> > 
> > 
> > block: retry on I/O error when reading partition table
> > 
> > Retry once on an I/O error when reading the partition table:
> > there's no much to loose, and this helps with some disk on
> > key devices I have.
> > 
> > Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Alan Stern]

On Tue, 26 May 2009, Michael S. Tsirkin wrote:

> On Mon, May 25, 2009 at 05:08:12PM -0400, Alan Stern wrote:
> > On Mon, 25 May 2009, Michael S. Tsirkin wrote:
> > 
> > > > So apparently this is a bug in the device; it doesn't respond correctly
> > > > to the first READ command.  But since it does respond correctly to 
> > > > later commands, everything works okay thereafter.  You ought to be able 
> > > > to recover from the error by running
> > > > 
> > > > 	blockdev --rereadpt /dev/sdb
> > > > 
> > > > manually.
> > > 
> > > Yes, this helps.
> > > Would it make sense for kernel to retry automatically?
> > > Why doesn't it?
> > 
> > I don't know the details in this case.  Most likely the error code 
> > (Logical Block Address Out of Range) is interpreted as a fatal 
> > non-retryable error.  For other sorts of errors, the kernel does retry.
> 
> Who would know? The scsi crowd?

They would know.  But it's easy enough to find out.  (Looks through 
the SCSI code...)  Here we go.  scsi_io_completion() contains this:

		case ILLEGAL_REQUEST:
			/* If we had an ILLEGAL REQUEST returned, then
			 * we may have performed an unsupported
			 * command.  The only thing this should be
			 * would be a ten byte read where only a six
			 * byte read was supported.  Also, on a system
			 * where READ CAPACITY failed, we may have
			 * read past the end of the disk.
			 */
			if ((cmd->device->use_10_for_rw &&
			    sshdr.asc == 0x20 && sshdr.ascq == 0x00) &&
			    (cmd->cmnd[0] == READ_10 ||
			     cmd->cmnd[0] == WRITE_10)) {
				/* This will issue a new 6-byte command. */
				cmd->device->use_10_for_rw = 0;
				action = ACTION_REPREP;
			} else if (sshdr.asc == 0x10) /* DIX */ {
				description = "Host Data Integrity Failure";
				action = ACTION_FAIL;
				error = -EILSEQ;
			} else
				action = ACTION_FAIL;
			break;

Since the Sense Key value was ILLEGAL_REQUEST and the ASC value wasn't 
0x10 or 0x20, action gets set to ACTION_FAIL.  Hence the command is not 
retried.

In the end, there's a limit to how far the kernel should go in 
compensating for buggy devices.  Your device may well have passed that 
limit.

Alan Stern

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Tue, May 26, 2009 at 10:04:01AM -0400, Alan Stern wrote:
> On Tue, 26 May 2009, Michael S. Tsirkin wrote:
> 
> > On Mon, May 25, 2009 at 05:08:12PM -0400, Alan Stern wrote:
> > > On Mon, 25 May 2009, Michael S. Tsirkin wrote:
> > > 
> > > > > So apparently this is a bug in the device; it doesn't respond correctly
> > > > > to the first READ command.  But since it does respond correctly to 
> > > > > later commands, everything works okay thereafter.  You ought to be able 
> > > > > to recover from the error by running
> > > > > 
> > > > > 	blockdev --rereadpt /dev/sdb
> > > > > 
> > > > > manually.
> > > > 
> > > > Yes, this helps.
> > > > Would it make sense for kernel to retry automatically?
> > > > Why doesn't it?
> > > 
> > > I don't know the details in this case.  Most likely the error code 
> > > (Logical Block Address Out of Range) is interpreted as a fatal 
> > > non-retryable error.  For other sorts of errors, the kernel does retry.
> > 
> > Who would know? The scsi crowd?
> 
> They would know.  But it's easy enough to find out.  (Looks through 
> the SCSI code...)  Here we go.  scsi_io_completion() contains this:
> 
> 		case ILLEGAL_REQUEST:
> 			/* If we had an ILLEGAL REQUEST returned, then
> 			 * we may have performed an unsupported
> 			 * command.  The only thing this should be
> 			 * would be a ten byte read where only a six
> 			 * byte read was supported.  Also, on a system
> 			 * where READ CAPACITY failed, we may have
> 			 * read past the end of the disk.
> 			 */
> 			if ((cmd->device->use_10_for_rw &&
> 			    sshdr.asc == 0x20 && sshdr.ascq == 0x00) &&
> 			    (cmd->cmnd[0] == READ_10 ||
> 			     cmd->cmnd[0] == WRITE_10)) {
> 				/* This will issue a new 6-byte command. */
> 				cmd->device->use_10_for_rw = 0;
> 				action = ACTION_REPREP;
> 			} else if (sshdr.asc == 0x10) /* DIX */ {
> 				description = "Host Data Integrity Failure";
> 				action = ACTION_FAIL;
> 				error = -EILSEQ;
> 			} else
> 				action = ACTION_FAIL;
> 			break;

Which kernel version is this? I see different code in 2.6.30-rc7.

> Since the Sense Key value was ILLEGAL_REQUEST and the ASC value wasn't 
> 0x10 or 0x20, action gets set to ACTION_FAIL.  Hence the command is not 
> retried.
> 
> In the end, there's a limit to how far the kernel should go in 
> compensating for buggy devices.  Your device may well have passed that 
> limit.
> 
> Alan Stern

Let's see, hope to find a workaround that isn't too ugly to be included.

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Tue, May 26, 2009 at 07:03:43PM +0300, Michael S. Tsirkin wrote:
> On Tue, May 26, 2009 at 10:04:01AM -0400, Alan Stern wrote:
> > On Tue, 26 May 2009, Michael S. Tsirkin wrote:
> > 
> > > On Mon, May 25, 2009 at 05:08:12PM -0400, Alan Stern wrote:
> > > > On Mon, 25 May 2009, Michael S. Tsirkin wrote:
> > > > 
> > > > > > So apparently this is a bug in the device; it doesn't respond correctly
> > > > > > to the first READ command.  But since it does respond correctly to 
> > > > > > later commands, everything works okay thereafter.  You ought to be able 
> > > > > > to recover from the error by running
> > > > > > 
> > > > > > 	blockdev --rereadpt /dev/sdb
> > > > > > 
> > > > > > manually.
> > > > > 
> > > > > Yes, this helps.
> > > > > Would it make sense for kernel to retry automatically?
> > > > > Why doesn't it?
> > > > 
> > > > I don't know the details in this case.  Most likely the error code 
> > > > (Logical Block Address Out of Range) is interpreted as a fatal 
> > > > non-retryable error.  For other sorts of errors, the kernel does retry.
> > > 
> > > Who would know? The scsi crowd?
> > 
> > They would know.  But it's easy enough to find out.  (Looks through 
> > the SCSI code...)  Here we go.  scsi_io_completion() contains this:
> > 
> > 		case ILLEGAL_REQUEST:
> > 			/* If we had an ILLEGAL REQUEST returned, then
> > 			 * we may have performed an unsupported
> > 			 * command.  The only thing this should be
> > 			 * would be a ten byte read where only a six
> > 			 * byte read was supported.  Also, on a system
> > 			 * where READ CAPACITY failed, we may have
> > 			 * read past the end of the disk.
> > 			 */
> > 			if ((cmd->device->use_10_for_rw &&
> > 			    sshdr.asc == 0x20 && sshdr.ascq == 0x00) &&
> > 			    (cmd->cmnd[0] == READ_10 ||
> > 			     cmd->cmnd[0] == WRITE_10)) {
> > 				/* This will issue a new 6-byte command. */
> > 				cmd->device->use_10_for_rw = 0;
> > 				action = ACTION_REPREP;
> > 			} else if (sshdr.asc == 0x10) /* DIX */ {
> > 				description = "Host Data Integrity Failure";
> > 				action = ACTION_FAIL;
> > 				error = -EILSEQ;
> > 			} else
> > 				action = ACTION_FAIL;
> > 			break;
> 
> Which kernel version is this? I see different code in 2.6.30-rc7.

Sorry, looked at the wrong file.
I see this in drivers/scsi/scsi_lib.c

-- 
MST

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Alan Stern]

On Tue, 26 May 2009, Michael S. Tsirkin wrote:

> > They would know.  But it's easy enough to find out.  (Looks through 
> > the SCSI code...)  Here we go.  scsi_io_completion() contains this:
> > 
> > 		case ILLEGAL_REQUEST:
> > 			/* If we had an ILLEGAL REQUEST returned, then
> > 			 * we may have performed an unsupported
> > 			 * command.  The only thing this should be
> > 			 * would be a ten byte read where only a six
> > 			 * byte read was supported.  Also, on a system
> > 			 * where READ CAPACITY failed, we may have
> > 			 * read past the end of the disk.
> > 			 */
> > 			if ((cmd->device->use_10_for_rw &&
> > 			    sshdr.asc == 0x20 && sshdr.ascq == 0x00) &&
> > 			    (cmd->cmnd[0] == READ_10 ||
> > 			     cmd->cmnd[0] == WRITE_10)) {
> > 				/* This will issue a new 6-byte command. */
> > 				cmd->device->use_10_for_rw = 0;
> > 				action = ACTION_REPREP;
> > 			} else if (sshdr.asc == 0x10) /* DIX */ {
> > 				description = "Host Data Integrity Failure";
> > 				action = ACTION_FAIL;
> > 				error = -EILSEQ;
> > 			} else
> > 				action = ACTION_FAIL;
> > 			break;
> 
> Which kernel version is this? I see different code in 2.6.30-rc7.

I don't.  It looks exactly the same as this (this was taken from 
2.6.30-rc6).  Look starting at line 844 of drivers/scsi/scsi_lib.c.

Alan Stern

Re: 2.a.30-rc7: fat filesystem misdetected as amiga

[Michael S. Tsirkin]

On Tue, May 26, 2009 at 12:51:35PM -0400, Alan Stern wrote:
> It looks exactly the same as this (this was taken from 
> 2.6.30-rc6).  Look starting at line 844 of drivers/scsi/scsi_lib.c.
> 
> Alan Stern

Yep, sorry.

-- 
MST