What to do with command received while in Stopped and Active_Wait states

George Penokie gop at us.ibm.com
Thu Feb 27 13:35:19 PST 2003


* From the T10 Reflector (t10 at t10.org), posted by:
* George Penokie <gop at us.ibm.com>
*




There are no rules on what to do with media access commands during SCSI
power conditions before the device is spun up. This needs to be fixed.

The power control proposal that will be going into SBC contains some
information on what to do in the Stopped state but gives no guidance as to
the specific actions that should be taken. Currently the proposal only
states:

a) the device server is not capable of processing media access commands;

There is no wording at all in SAS rev 3d as to what to do with a media
access command received while in the Active_Wait state.

To fix this SAS rev 3 should add into the Active_Wait description:

The device server is not capable of processing media access commands. Any
media access commands received while in this state shall cause the device
server  to terminate the command with a CHECK CONDITION status with a sense
key of NOT READY and an additional sense code as LOGICAL UNIT NOT READY,
INITIALIZING CMD REQUIRED.

To fix SBC add in:

Any media access commands received while in this state shall cause the
device server  to terminate the command with a CHECK CONDITION status with
a sense key of NOT READY and an additional sense code as LOGICAL UNIT NOT
READY, INITIALIZING CMD REQUIRED.


Bye for now,
George Penokie

Dept 2C6  114-2 N212
E-Mail:    gop at us.ibm.com
Internal:  553-5208
External: 507-253-5208   FAX: 507-253-2880


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