Re: this list

Hi,

The CDB I send is:
SCSI CDB Read Capacity(10)
    [LUN: 0x0000]
    [Command Set:Direct Access Device (0x00) (Using default commandset)]
    [Response in: 12]
    Opcode: Read Capacity(10) (0x25)
    Logical Block Address: 0
    PMI Flags: 0x00
        .... ...0 =3D PMI: Pmi is CLEAR
    Vendor Unique =3D 0, NACA =3D 0, Link =3D 0

(0x25 for the first byte, the rest 0x00)

the reply is:
SCSI: SNS Info
    [LUN: 0x0000]
    Valid: 0
    .111 0000 =3D SNS Error Type: Current Error (0x70)
    Filemark: 0, EOM: 0, ILI: 0
    .... 0110 =3D Sense Key: Unit Attention (0x06)
    Sense Info: 0x00000000
    Additional Sense Length: 10
    Command-Specific Information: 00000000
    Additional Sense Code+Qualifier: Power On, Reset, Or Bus Device Reset O=
ccurred (0x2900)
    Field Replaceable Unit Code: 0x00
    0... .... =3D SKSV: False
    Sense Key Specific: 000000

in hex:
70 00 06 00 00 00 00 0a 00 00 00 00 29 00 00 00 00 00


On Mon, Jan 24, 2011 at 11:09:30AM -0500, Knight, Frederick wrote:
> On the other hand, it depends on what CHECK CONDITION you are getting.
> =

> Can you supply the full CDB and full response (all sense data including) =
- status, sense key, ASC/ASCQ, data (if any).
> =

> If you are sending a badly formed CDB, they the device is perfectly withi=
n its rights to return CHECK CONDITION - but when it does, it should also r=
eturn more info about what is wrong (and that will be down in the detailed =
bits of the returned sense data).
> =

> Invalid OP Code is not valid for a disk to return (as per previous commen=
ts), but INVALID FIELD IN CDB means you made a mistake.
> =

> 	Fred Knight
> =

> -----Original Message-----
> From: [email protected] [mailto:[email protected]] =

> Sent: Monday, January 24, 2011 10:39 AM
> To: [email protected]; [email protected]
> Subject: Re: [Ips] this list
> =

> That's actually more of a generic SCSI question than an iSCSI question, b=
ut anyhow ...
> =

> ... if READ CAPACITY (10) doesn't work, try READ CAPACITY (16) [opcode 0x=
9E, service action 0x10].
> =

> OTOH, if READ CAPACITY (10) results in a Check Condition for invalid opco=
de, the target that issued that CC does not comply with the SCSI standards,=
 as support for READ CAPACITY (10) is mandatory for block devices in both t=
he SBC-2 standard and all drafts of the in-progress SBC-3 standard.
> =

> Thanks,
> --David
> ----------------------------------------------------
> David L. Black, Distinguished Engineer
> EMC Corporation, 176 South St., Hopkinton, MA=A0 01748
> +1 (508) 293-7953=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 FAX: +1 (508) 293-7=
786
> [email protected]=A0=A0=A0=A0=A0=A0=A0 Mobile: +1 (978) 394-7754
> ----------------------------------------------------
> =

> > -----Original Message-----
> > From: [email protected] [mailto:[email protected]] On Behalf Of f=
olkert
> > Sent: Monday, January 24, 2011 8:30 AM
> > To: [email protected]
> > Subject: [Ips] this list
> > =

> > Hi,
> > =

> > Is this list available for generic iSCSI questions?
> > =

> > If so: some (linux iscsi target and window iStorageSErver) respond with
> > valid data to Read Capacity(10) SCSI 0x25 command while for example
> > nexenta store (an opensolaris system) responds with Check Condition.
> > So I guess this is not the common way of determing the sector size and
> > size of the device.
> > Which command should I use for this?
> > Thanks.
> > =

> > =

> > Folkert van Heusden
> _______________________________________________
> Ips mailing list
> [email protected]
> https://www.ietf.org/mailman/listinfo/ips


Folkert van Heusden

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