FW: What should FCP_DL be for REBUILD and REGENERATE commands?

Jay_Elrod at notes.seagate.com Jay_Elrod at notes.seagate.com
Thu Apr 15 07:30:58 PDT 1999


* From the T10 Reflector (t10 at symbios.com), posted by:
* Jay_Elrod at notes.seagate.com
*
Hi Carol,

Regarding your below question, since the intermediate data is part of the
parameter list, the "parameter list length" field of the Rebuild and
Regenerate commands includes the intermediate data length.

Jay Elrod





Carol Warren <Carol.Warren at quantum.com> on 04/14/99 04:04:30 PM

To:   "'t10 at Symbios.COM'" <t10 at Symbios.COM>
cc:    (bcc: Jay Elrod)
Subject:  FW: What should FCP_DL be for REBUILD and REGENERATE commands?




* From the T10 Reflector (t10 at symbios.com), posted by:
* Carol Warren <Carol.Warren at quantum.com>
*


> -----Original Message-----
> From:   Carol Warren
> Sent:   Wednesday, April 14, 1999 2:08 PM
> To:     'fc at nsg0.network.com'
> Subject:     What should FCP_DL be for REBUILD and REGENERATE commands?
>
>
> I have a question regarding what the FCP_DL (Data Length) field in the
> FCP_CMND Information Unit should contain for the Third Party REBUILD and
> REGENERATE commands.
>
> The Fibre Channel Bench Reference from ENDL states the data length is the
> maximum number of bytes that the SCSI initiator expects to transfer to or
> from the SCSI target.  For both commands only the parameter data is
> transferred from the host to the target unless the Intdata bit is set.
> For both the REBUILD and REGENERATE commands, I would expect the FCP_DL
> field to contain:
>       Intdata=0 -   Parameter List Length
>       Intdata=1 -   (Rebuild/Regenerate Length * blocksize) + Parameter
> List Length
>
> Anyone have any comments on this?  Thanks in advance.
>
>
> Carol Warren
> Quantum Corporation, 333 South Street, SHR1-3/013, Shrewsbury, MA 01545
> (508) 770-6370    FAX 508-770-5920
> Carol.Warren at Quantum.com
>
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