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SubjectRe: [BISECTED] Re: [BUG] Linux-2.6.31-rc1 Fails To Recognize Some USB Disks
On 07/24/2009 05:02 PM, Martin K. Petersen wrote:
> Tarkan> Today, I had time to bisect and you were right: The below commit
> Tarkan> related to capacity detection changes in SCSI subsystem,as you
> Tarkan> mentioned, seems the cause of the problem.
>
> Thanks for bisecting this.
>
>
You're welcome ;-)
> Tarkan> Detect non-rotational devices and set the queue flag
> Tarkan> accordingly.
>
> Aha, so you're getting USB resets because your USB-ATA bridge gets
> confused when we ask it a simple question. What a marvel of modern
> engineering that thing is...
>
> Please send me the output of:
>
> sg_inq -e /dev/foo
> sg_inq -l 16 /dev/foo
> sg_inq -l 16 -e /dev/foo
> sg_inq -l 36 /dev/foo
> sg_inq -l 36 -e /dev/foo
> sg_vpd -p sv /dev/foo
> sg_vpd -p bl /dev/foo
> sg_vpd -p bdc /dev/foo
>
>

Here are the results of the commands you asked :

root@tarkane:~# sg_inq -e /dev/sdb
VPD INQUIRY: extended INQUIRY data page

inquiry: transport: Host_status=0x05 [DID_ABORT]
Driver_status=0x00 [DRIVER_OK, SUGGEST_OK]

inquiry: failed, res=-1


root@tarkane:~# sg_inq -l 16 /dev/sdb
standard INQUIRY:
PQual=0 Device_type=0 RMB=0 version=0x00 [no conformance claimed]
[AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=0
SCCS=0 ACC=0 TGPS=0 3PC=0 Protect=0 BQue=0
EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0
[RelAdr=0] WBus16=0 Sync=0 Linked=0 [TranDis=0] CmdQue=0
length=74 (0x4a), but only fetched 16 bytes Peripheral device
type: disk
Vendor identification: WD
Product identification: <none>
Product revision level: <none>


root@tarkane:~# sg_inq -l 16 -e /dev/sdb
VPD INQUIRY: extended INQUIRY data page
inquiry: transport: Host_status=0x05 [DID_ABORT]
Driver_status=0x00 [DRIVER_OK, SUGGEST_OK]

inquiry: failed, res=-1


root@tarkane:~# sg_inq -l 36 /dev/sdb
standard INQUIRY:
PQual=0 Device_type=0 RMB=0 version=0x00 [no conformance claimed]
[AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=0
SCCS=0 ACC=0 TGPS=0 3PC=0 Protect=0 BQue=0
EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0
[RelAdr=0] WBus16=0 Sync=0 Linked=0 [TranDis=0] CmdQue=0
length=74 (0x4a), but only fetched 36 bytes Peripheral device
type: disk
Vendor identification: WD
Product identification: 2500JB External
Product revision level: 0108


root@tarkane:~# sg_inq -l 36 -e /dev/sdb
VPD INQUIRY: extended INQUIRY data page
inquiry: transport: Host_status=0x05 [DID_ABORT]
Driver_status=0x00 [DRIVER_OK, SUGGEST_OK]

inquiry: failed, res=-1


root@tarkane:~# sg_vpd -p sv /dev/sdb
Supported VPD pages VPD page:
inquiry: transport: Host_status=0x05 [DID_ABORT]
Driver_status=0x00 [DRIVER_OK, SUGGEST_OK]

fetching VPD page failed


root@tarkane:~# sg_vpd -p bl /dev/sdb
inquiry: transport: Host_status=0x05 [DID_ABORT]
Driver_status=0x00 [DRIVER_OK, SUGGEST_OK]

VPD page=0xb0
fetching VPD page failed


root@tarkane:~# sg_vpd -p bdc /dev/sdb
abbreviation doesn't match a VPD page
available VPD pages:
ai 0x89 ATA information (SAT)
aod 0x82 ASCII implemented operating definition (obs)
bl 0xb0 Block limits (SBC)
di 0x83 Device identification
di_asis 0x83 Like 'di' but designators ordered as found
di_lu 0x83 Device identification, lu only
di_port 0x83 Device identification, target port only
di_target 0x83 Device identification, target device only
ei 0x86 Extended inquiry data
iod 0x81 Implemented operating definition (obs)
mas 0xb1 Manufacturer assigned serial number (SSC)
mna 0x85 Management network addresses
mpp 0x87 Mode page policy
oi 0xb0 OSD information
sad 0xb0 Sequential access device capabilities (SSC)
sii 0x84 Software interface identification
sn 0x80 Unit serial number
sp 0x88 SCSI ports
st 0xb1 Security token (OSD)
sv 0x00 Supported VPD pages
tas 0xb2 TapeAlert supported flags (SSC)

Vendor specific VPD pages:
datc 0xc1,0 Date code (Seagate)
devb 0xc3,0 Device behavior (Seagate)
firm 0xc0,0 Firmware numbers (Seagate)
jump 0xc2,0 Jump setting (Seagate)
sver 0xc2,1 Software version (RDAC)
upr 0xc0,1 Unit path report (EMC)
vac 0xc9,0 Volume access control (RDAC)



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