Hold bit and UA response.

Kevin D Butt kdbutt at us.ibm.com
Tue May 17 12:03:49 PDT 2005


* From the T10 Reflector (t10 at t10.org), posted by:
* Kevin D Butt <kdbutt at us.ibm.com>
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In SSC-3r01c under the Load/Unload command, Clause 7.2 pg 76 there is
this description of the HOLD bit. 

A LOAD bit of one and a HOLD bit of one specifies if the medium has not
been moved into the logical unit, the 
medium shall be moved in but not positioned for access. The EOT and
RETEN bits shall be set to zero. Following 
successful completion, the device server shall return GOOD status. If
both the medium and device server support 
MAM, the device server shall generate a unit attention condition for all
initiators and the additional sense code shall 
be set to MEDIUM AUXILIARY MEMORY ACCESSIBLE. 

My question is if the intent is that the UA be generated for "all
initiators" as is stated, or if the intent is to generate the UA for
"all other I_T Nexuses"? 

Thanks, 

Kevin D. Butt
Fibre Channel & SCSI Architect, IBM Tape Firmware, 
6TYA, 9000 S. Rita Rd., Tucson, AZ  85744
Tie-line 321; Office: 520-799-5280, Lab: 799-5751, Fax: 799-4138, Email:
kdbutt at us.ibm.com

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<br><font size=2 face="sans-serif">In SSC-3r01c under the Load/Unload command,
Clause 7.2 pg 76 there is this description of the HOLD bit.</font>
<br>
<br><font size=2 face="sans-serif">A LOAD bit of one and a HOLD bit of
one specifies if the medium has not been moved into the logical unit, the</font>
<br><font size=2 face="sans-serif">medium shall be moved in but not positioned
for access. The EOT and RETEN bits shall be set to zero. Following</font>
<br><font size=2 face="sans-serif">successful completion, the device server
shall return GOOD status. If both the medium and device server support</font>
<br><font size=2 face="sans-serif">MAM, the device server shall generate
a unit attention condition for all initiators and the additional sense
code shall</font>
<br><font size=2 face="sans-serif">be set to MEDIUM AUXILIARY MEMORY ACCESSIBLE.</font>
<br>
<br><font size=2 face="sans-serif">My question is if the intent is that
the UA be generated for "all initiators" as is stated, or if
the intent is to generate the UA for "all other I_T Nexuses"?</font>
<br>
<br><font size=2 face="sans-serif">Thanks,</font>
<br><font size=2 face="sans-serif"><br>
Kevin D. Butt<br>
Fibre Channel &amp; SCSI Architect, IBM Tape Firmware, <br>
6TYA, 9000 S. Rita Rd., Tucson, AZ &nbsp;85744<br>
Tie-line 321; Office: 520-799-5280, Lab: 799-5751, Fax: 799-4138, Email:
kdbutt at us.ibm.com</font>
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