* sg_requests for descriptor sense data
@ 2011-12-12 15:43 Desai, Kashyap
2011-12-12 16:33 ` Douglas Gilbert
0 siblings, 1 reply; 4+ messages in thread
From: Desai, Kashyap @ 2011-12-12 15:43 UTC (permalink / raw)
To: linux-scsi, Douglas Gilbert
Douglas,
I am trying to generate Descriptor format sense data from driver attached to LSI controller.
I have tried few sets of commands on my linux machine. Please help me if anything is wrong here.
1. Output of " sg_inq -d /dev/sg0"
[root@dhcp-135-24-192-117 ~]# sg_inq -d /dev/sg0
standard INQUIRY:
PQual=0 Device_type=0 RMB=0 version=0x06 [SPC-4]
[AERC=0] [TrmTsk=0] NormACA=0 HiSUP=1 Resp_data_format=2
SCCS=0 ACC=0 TPGS=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=1
[SPI: Clocking=0x0 QAS=0 IUS=0]
length=74 (0x4a) Peripheral device type: disk
Vendor identification: ATA
Product identification: WDC WD30EZRS-00J
Product revision level: 0A80
Unit serial number: WD-WCAWZ0036672
Version descriptors:
SAM-4 (no version claimed)
SAT-2 (no version claimed)
SPC-4 (no version claimed)
SBC-3 (no version claimed)
SAS ANSI INCITS 376-2003
ATA/ATAPI-8 ATA-ACS ATA/ATAPI command set (no version claimed)
2. Output of " sg_requests -v /dev/sg0 -d"
[root@dhcp-135-24-192-117 ~]# sg_requests -v /dev/sg0 -d
Request Sense cmd: 03 01 00 00 fc 00
request sense: Fixed format, current; Sense key: Illegal Request
Additional sense: Invalid field in cdb
bad field in Request Sense cdb
3. Reading beyond the range of drive to get sense data.
Output of "sg_read if=/dev/sg0 cdbsz=16 skip=0x15d50a3af00 bs=512 verbose=3 count=512"
[root@dhcp-135-24-192-117 ~]# sg_read if=/dev/sg0 cdbsz=16 skip=0x15d50a3af00 bs=512 verbose=3 count=512
Opened /dev/sg0 for SG_IO with flags=0x2
SG_GET_RESERVED_SIZE yields: 32768
read cdb: 88 00 00 00 01 5d 50 a3 af 00 00 00 00 80 00 00
duration=123 ms
reading: SCSI status: Check Condition
Fixed format, current; Sense key: Illegal Request
Additional sense: Logical block address out of range
Raw sense data (in hex):
70 00 05 00 00 00 00 0a 00 00 00 00 21 00 00 00
00 00
sg_read: SCSI READ failed
Some error occurred, remaining block count=512
0+0 records in
My Drive is SPC-4 complaint and sg_requests suggested to have SPC-3 or higher version to enable descriptor format.
_But_ for me it is not working.
Eventually, When I try to run command as mentioned in #3, I want to see Descriptor format sense instead of Fixed one.
Thanks, Kashyap
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: sg_requests for descriptor sense data
2011-12-12 15:43 sg_requests for descriptor sense data Desai, Kashyap
@ 2011-12-12 16:33 ` Douglas Gilbert
2011-12-15 5:53 ` Desai, Kashyap
0 siblings, 1 reply; 4+ messages in thread
From: Douglas Gilbert @ 2011-12-12 16:33 UTC (permalink / raw)
To: Desai, Kashyap; +Cc: linux-scsi
On 11-12-12 10:43 AM, Desai, Kashyap wrote:
> Douglas,
>
> I am trying to generate Descriptor format sense data from driver attached to LSI controller.
> I have tried few sets of commands on my linux machine. Please help me if anything is wrong here.
Which version of sg3_utils are you using? 1.32 is the current
stable version. From the output of #3 it seems that a very
old Linux kernel or old version of sg3_utils (or both) is being
used.
> 1. Output of " sg_inq -d /dev/sg0"
>
> [root@dhcp-135-24-192-117 ~]# sg_inq -d /dev/sg0
> standard INQUIRY:
> PQual=0 Device_type=0 RMB=0 version=0x06 [SPC-4]
> [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=1 Resp_data_format=2
> SCCS=0 ACC=0 TPGS=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=1
> [SPI: Clocking=0x0 QAS=0 IUS=0]
> length=74 (0x4a) Peripheral device type: disk
> Vendor identification: ATA
> Product identification: WDC WD30EZRS-00J
> Product revision level: 0A80
> Unit serial number: WD-WCAWZ0036672
>
> Version descriptors:
> SAM-4 (no version claimed)
> SAT-2 (no version claimed)
> SPC-4 (no version claimed)
> SBC-3 (no version claimed)
> SAS ANSI INCITS 376-2003
> ATA/ATAPI-8 ATA-ACS ATA/ATAPI command set (no version claimed)
That is an ATA disk so there is a SATL somewhere. This output
looks good (and looks like libata and _not_ the better
SATL found in the firmware of LSI's MPT SAS HBAs).
> 2. Output of " sg_requests -v /dev/sg0 -d"
>
> [root@dhcp-135-24-192-117 ~]# sg_requests -v /dev/sg0 -d
> Request Sense cmd: 03 01 00 00 fc 00
> request sense: Fixed format, current; Sense key: Illegal Request
> Additional sense: Invalid field in cdb
> bad field in Request Sense cdb
Ah, that looks like libata's SATL! Whoever programmed
that didn't understand the SCSI REQUEST SENSE command.
I think libata's SATL has been broken with respect
to REQUEST SENSE since day one.
> 3. Reading beyond the range of drive to get sense data.
> Output of "sg_read if=/dev/sg0 cdbsz=16 skip=0x15d50a3af00 bs=512 verbose=3 count=512"
> [root@dhcp-135-24-192-117 ~]# sg_read if=/dev/sg0 cdbsz=16 skip=0x15d50a3af00 bs=512 verbose=3 count=512
> Opened /dev/sg0 for SG_IO with flags=0x2
> SG_GET_RESERVED_SIZE yields: 32768
> read cdb: 88 00 00 00 01 5d 50 a3 af 00 00 00 00 80 00 00
> duration=123 ms
> reading: SCSI status: Check Condition
> Fixed format, current; Sense key: Illegal Request
> Additional sense: Logical block address out of range
> Raw sense data (in hex):
> 70 00 05 00 00 00 00 0a 00 00 00 00 21 00 00 00
> 00 00
> sg_read: SCSI READ failed
> Some error occurred, remaining block count=512
> 0+0 records in
Could you try that again with ddpt? The "Logical block
address out of range" is correct but I haven't seen
a SG_GET_RESERVED_SIZE error in a very long time.
> My Drive is SPC-4 complaint and sg_requests suggested to have SPC-3 or higher version to enable descriptor format.
> _But_ for me it is not working.
Hmmm, hopefully your drive is compliant with some ATA standard,
perhaps ACS-1. The issues we are looking at here are SAT (or
SAT-2) compliance. Not sure how libata handles the D_SENSE
field in Control mode page but I wouldn't be surprised if it
is broken.
A recent Seagate 3 TB SAS disk with 512 byte blocks comes from
the factory like this:
D_SENSE 1 [cha: y, def: 1, sav: 1] Descriptor format sense data
and it does return descriptor sense data when appropriate.
> Eventually, When I try to run command as mentioned in #3, I want to see Descriptor format sense instead of Fixed one.
Well when a disk is over 2 TB in size then descriptor
sense format is required to represent LBAs that are
bigger than 32 bits (assuming a LB size of 512 bytes).
Doug Gilbert
^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: sg_requests for descriptor sense data
2011-12-12 16:33 ` Douglas Gilbert
@ 2011-12-15 5:53 ` Desai, Kashyap
2011-12-17 2:32 ` Douglas Gilbert
0 siblings, 1 reply; 4+ messages in thread
From: Desai, Kashyap @ 2011-12-15 5:53 UTC (permalink / raw)
To: dgilbert; +Cc: linux-scsi
> -----Original Message-----
> From: Douglas Gilbert [mailto:dgilbert@interlog.com]
> Sent: Monday, December 12, 2011 10:04 PM
> To: Desai, Kashyap
> Cc: linux-scsi@vger.kernel.org
> Subject: Re: sg_requests for descriptor sense data
>
> On 11-12-12 10:43 AM, Desai, Kashyap wrote:
> > Douglas,
> >
> > I am trying to generate Descriptor format sense data from driver
> attached to LSI controller.
> > I have tried few sets of commands on my linux machine. Please help me
> if anything is wrong here.
>
> Which version of sg3_utils are you using? 1.32 is the current
> stable version. From the output of #3 it seems that a very
> old Linux kernel or old version of sg3_utils (or both) is being
> used.
It is a RHEL6 and 1.32 version of sg util.
>
> > 1. Output of " sg_inq -d /dev/sg0"
> >
> > [root@dhcp-135-24-192-117 ~]# sg_inq -d /dev/sg0
> > standard INQUIRY:
> > PQual=0 Device_type=0 RMB=0 version=0x06 [SPC-4]
> > [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=1 Resp_data_format=2
> > SCCS=0 ACC=0 TPGS=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=1
> > [SPI: Clocking=0x0 QAS=0 IUS=0]
> > length=74 (0x4a) Peripheral device type: disk
> > Vendor identification: ATA
> > Product identification: WDC WD30EZRS-00J
> > Product revision level: 0A80
> > Unit serial number: WD-WCAWZ0036672
> >
> > Version descriptors:
> > SAM-4 (no version claimed)
> > SAT-2 (no version claimed)
> > SPC-4 (no version claimed)
> > SBC-3 (no version claimed)
> > SAS ANSI INCITS 376-2003
> > ATA/ATAPI-8 ATA-ACS ATA/ATAPI command set (no version claimed)
>
> That is an ATA disk so there is a SATL somewhere. This output
> looks good (and looks like libata and _not_ the better
> SATL found in the firmware of LSI's MPT SAS HBAs).
I agree.! I am not sure about what is a theory behind it, but yes your input clears my doubt
Thanks.
>
> > 2. Output of " sg_requests -v /dev/sg0 -d"
> >
> > [root@dhcp-135-24-192-117 ~]# sg_requests -v /dev/sg0 -d
> > Request Sense cmd: 03 01 00 00 fc 00
> > request sense: Fixed format, current; Sense key: Illegal Request
> > Additional sense: Invalid field in cdb
> > bad field in Request Sense cdb
>
> Ah, that looks like libata's SATL! Whoever programmed
> that didn't understand the SCSI REQUEST SENSE command.
> I think libata's SATL has been broken with respect
> to REQUEST SENSE since day one.
>
> > 3. Reading beyond the range of drive to get sense data.
> > Output of "sg_read if=/dev/sg0 cdbsz=16 skip=0x15d50a3af00 bs=512
> verbose=3 count=512"
> > [root@dhcp-135-24-192-117 ~]# sg_read if=/dev/sg0 cdbsz=16
> skip=0x15d50a3af00 bs=512 verbose=3 count=512
> > Opened /dev/sg0 for SG_IO with flags=0x2
> > SG_GET_RESERVED_SIZE yields: 32768
> > read cdb: 88 00 00 00 01 5d 50 a3 af 00 00 00 00 80 00 00
> > duration=123 ms
> > reading: SCSI status: Check Condition
> > Fixed format, current; Sense key: Illegal Request
> > Additional sense: Logical block address out of range
> > Raw sense data (in hex):
> > 70 00 05 00 00 00 00 0a 00 00 00 00 21 00 00 00
> > 00 00
> > sg_read: SCSI READ failed
> > Some error occurred, remaining block count=512
> > 0+0 records in
>
> Could you try that again with ddpt? The "Logical block
> address out of range" is correct but I haven't seen
> a SG_GET_RESERVED_SIZE error in a very long time.
I am trying this. Do you have any default "ddpt" command to be executed ?
I am seeing some issue while running ddpt command related to ": undefined symbol: set_scsi_pt_flags"
[root@dhcp-135-24-192-117 ddpt-0.92]# ddpt if=/dev/sg3 of=/dev/null count=10 verbose=2
Assume block size of 512 bytes for both input and output
>> Input file type: pass-through [pt] device
open /dev/sg3 with flags=0x802
inquiry cdb: 12 00 00 00 24 00
/dev/sg3: ATA WDC WD30EZRS-00J 0A80 [pdt=0]
>> Output file type: null device
read capacity (10) cdb: 25 00 00 00 00 00 00 00 00 00
READ CAPACITY (10) response cannot represent this capacity
read capacity (16) cdb: 9e 10 00 00 00 00 00 00 00 00 00 00 00 20 00 00
/dev/sg3 [pt]: blocks=5860533168 [0x15d50a3b0], _bs=512, 3.00 TB
skip=0 (blocks on input), seek=0 (blocks on output)
ibs=512 bytes, obs=512 bytes, OBPC=0
initial count=10 (blocks of input), blocks_per_transfer=128
ddpt: symbol lookup error: ddpt: undefined symbol: set_scsi_pt_flags
[root@dhcp-135-24-192-117 ddpt-0.92]#
>
> > My Drive is SPC-4 complaint and sg_requests suggested to have SPC-3 or
> higher version to enable descriptor format.
> > _But_ for me it is not working.
>
> Hmmm, hopefully your drive is compliant with some ATA standard,
> perhaps ACS-1. The issues we are looking at here are SAT (or
> SAT-2) compliance. Not sure how libata handles the D_SENSE
> field in Control mode page but I wouldn't be surprised if it
> is broken.
>
> A recent Seagate 3 TB SAS disk with 512 byte blocks comes from
> the factory like this:
> D_SENSE 1 [cha: y, def: 1, sav: 1] Descriptor format sense
> data
>
> and it does return descriptor sense data when appropriate.
I tried with another 3TB SAS drive and yes things are as expected there. I am able to see Descriptor sense data.
>
> > Eventually, When I try to run command as mentioned in #3, I want to
> see Descriptor format sense instead of Fixed one.
>
> Well when a disk is over 2 TB in size then descriptor
> sense format is required to represent LBAs that are
> bigger than 32 bits (assuming a LB size of 512 bytes).
>
> Doug Gilbert
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: sg_requests for descriptor sense data
2011-12-15 5:53 ` Desai, Kashyap
@ 2011-12-17 2:32 ` Douglas Gilbert
0 siblings, 0 replies; 4+ messages in thread
From: Douglas Gilbert @ 2011-12-17 2:32 UTC (permalink / raw)
To: Desai, Kashyap; +Cc: linux-scsi
On 11-12-15 12:53 AM, Desai, Kashyap wrote:
>
>
>> -----Original Message-----
>> From: Douglas Gilbert [mailto:dgilbert@interlog.com]
>> Sent: Monday, December 12, 2011 10:04 PM
>> To: Desai, Kashyap
>> Cc: linux-scsi@vger.kernel.org
>> Subject: Re: sg_requests for descriptor sense data
>>
>> On 11-12-12 10:43 AM, Desai, Kashyap wrote:
>>> Douglas,
>>>
>>> I am trying to generate Descriptor format sense data from driver
>> attached to LSI controller.
>>> I have tried few sets of commands on my linux machine. Please help me
>> if anything is wrong here.
>>
>> Which version of sg3_utils are you using? 1.32 is the current
>> stable version. From the output of #3 it seems that a very
>> old Linux kernel or old version of sg3_utils (or both) is being
>> used.
>
> It is a RHEL6 and 1.32 version of sg util.
>
>>
>>> 1. Output of " sg_inq -d /dev/sg0"
>>>
>>> [root@dhcp-135-24-192-117 ~]# sg_inq -d /dev/sg0
>>> standard INQUIRY:
>>> PQual=0 Device_type=0 RMB=0 version=0x06 [SPC-4]
>>> [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=1 Resp_data_format=2
>>> SCCS=0 ACC=0 TPGS=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=1
>>> [SPI: Clocking=0x0 QAS=0 IUS=0]
>>> length=74 (0x4a) Peripheral device type: disk
>>> Vendor identification: ATA
>>> Product identification: WDC WD30EZRS-00J
>>> Product revision level: 0A80
>>> Unit serial number: WD-WCAWZ0036672
>>>
>>> Version descriptors:
>>> SAM-4 (no version claimed)
>>> SAT-2 (no version claimed)
>>> SPC-4 (no version claimed)
>>> SBC-3 (no version claimed)
>>> SAS ANSI INCITS 376-2003
>>> ATA/ATAPI-8 ATA-ACS ATA/ATAPI command set (no version claimed)
>>
>> That is an ATA disk so there is a SATL somewhere. This output
>> looks good (and looks like libata and _not_ the better
>> SATL found in the firmware of LSI's MPT SAS HBAs).
>
> I agree.! I am not sure about what is a theory behind it, but yes your input clears my doubt
> Thanks.
>
>>
>>> 2. Output of " sg_requests -v /dev/sg0 -d"
>>>
>>> [root@dhcp-135-24-192-117 ~]# sg_requests -v /dev/sg0 -d
>>> Request Sense cmd: 03 01 00 00 fc 00
>>> request sense: Fixed format, current; Sense key: Illegal Request
>>> Additional sense: Invalid field in cdb
>>> bad field in Request Sense cdb
>>
>> Ah, that looks like libata's SATL! Whoever programmed
>> that didn't understand the SCSI REQUEST SENSE command.
>> I think libata's SATL has been broken with respect
>> to REQUEST SENSE since day one.
>>
>>> 3. Reading beyond the range of drive to get sense data.
>>> Output of "sg_read if=/dev/sg0 cdbsz=16 skip=0x15d50a3af00 bs=512
>> verbose=3 count=512"
>>> [root@dhcp-135-24-192-117 ~]# sg_read if=/dev/sg0 cdbsz=16
>> skip=0x15d50a3af00 bs=512 verbose=3 count=512
>>> Opened /dev/sg0 for SG_IO with flags=0x2
>>> SG_GET_RESERVED_SIZE yields: 32768
>>> read cdb: 88 00 00 00 01 5d 50 a3 af 00 00 00 00 80 00 00
>>> duration=123 ms
>>> reading: SCSI status: Check Condition
>>> Fixed format, current; Sense key: Illegal Request
>>> Additional sense: Logical block address out of range
>>> Raw sense data (in hex):
>>> 70 00 05 00 00 00 00 0a 00 00 00 00 21 00 00 00
>>> 00 00
>>> sg_read: SCSI READ failed
>>> Some error occurred, remaining block count=512
>>> 0+0 records in
>>
>> Could you try that again with ddpt? The "Logical block
>> address out of range" is correct but I haven't seen
>> a SG_GET_RESERVED_SIZE error in a very long time.
>
> I am trying this. Do you have any default "ddpt" command to be executed ?
> I am seeing some issue while running ddpt command related to ": undefined symbol: set_scsi_pt_flags"
That implies there is an old version of the sgutils dev
library on your system. On Debian/Ubuntu it would have
a name like libsgutils2-dev_1.33-0.1_i386.deb but for
that error it will be version 1.28 [20091002] or earlier.
You need to delete that old sgutils dev library package.
Once it is gone ddpt will build what it needs and link it
in statically.
Another approach is to fetch a recent sg3_utils tarball,
build it and install all three packages the build generates.
After that ddpt will run properly.
Advice to others: if you have pressure from distribution
maintainers to share common code between packages in
shared libraries; politely ignore them.
Doug Gilbert
> [root@dhcp-135-24-192-117 ddpt-0.92]# ddpt if=/dev/sg3 of=/dev/null count=10 verbose=2
> Assume block size of 512 bytes for both input and output
> >> Input file type: pass-through [pt] device
> open /dev/sg3 with flags=0x802
> inquiry cdb: 12 00 00 00 24 00
> /dev/sg3: ATA WDC WD30EZRS-00J 0A80 [pdt=0]
> >> Output file type: null device
> read capacity (10) cdb: 25 00 00 00 00 00 00 00 00 00
> READ CAPACITY (10) response cannot represent this capacity
> read capacity (16) cdb: 9e 10 00 00 00 00 00 00 00 00 00 00 00 20 00 00
> /dev/sg3 [pt]: blocks=5860533168 [0x15d50a3b0], _bs=512, 3.00 TB
> skip=0 (blocks on input), seek=0 (blocks on output)
> ibs=512 bytes, obs=512 bytes, OBPC=0
> initial count=10 (blocks of input), blocks_per_transfer=128
> ddpt: symbol lookup error: ddpt: undefined symbol: set_scsi_pt_flags
> [root@dhcp-135-24-192-117 ddpt-0.92]#
>
>
>>
>>> My Drive is SPC-4 complaint and sg_requests suggested to have SPC-3 or
>> higher version to enable descriptor format.
>>> _But_ for me it is not working.
>>
>> Hmmm, hopefully your drive is compliant with some ATA standard,
>> perhaps ACS-1. The issues we are looking at here are SAT (or
>> SAT-2) compliance. Not sure how libata handles the D_SENSE
>> field in Control mode page but I wouldn't be surprised if it
>> is broken.
>>
>> A recent Seagate 3 TB SAS disk with 512 byte blocks comes from
>> the factory like this:
>> D_SENSE 1 [cha: y, def: 1, sav: 1] Descriptor format sense
>> data
>>
>> and it does return descriptor sense data when appropriate.
>
> I tried with another 3TB SAS drive and yes things are as expected there. I am able to see Descriptor sense data.
>
>>
>>> Eventually, When I try to run command as mentioned in #3, I want to
>> see Descriptor format sense instead of Fixed one.
>>
>> Well when a disk is over 2 TB in size then descriptor
>> sense format is required to represent LBAs that are
>> bigger than 32 bits (assuming a LB size of 512 bytes).
>>
>> Doug Gilbert
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-12-17 2:32 UTC | newest]
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2011-12-12 15:43 sg_requests for descriptor sense data Desai, Kashyap
2011-12-12 16:33 ` Douglas Gilbert
2011-12-15 5:53 ` Desai, Kashyap
2011-12-17 2:32 ` Douglas Gilbert
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