Re: Patch: allow devices to restrict start on add

[Eddie Williams <Eddie.Williams@steeleye.com>]

On Thursday 22 May 2003 02:30 pm, Luben Tuikov wrote:
> Eddie Williams wrote:
> > When a SCSI disk is added and it returns a NOT READY the SD driver is
> > automatically sending a START_UNIT command to spin the device up.  While
> > this may be the desired behavior for many if not most devices not all
> > devices either want or need this.
>
> Eddie,
>
> Could you please report what the ASC is when NOT READY is
> returned in this particular situation? (ASCQ should be 0)

Sense_Key=2 Not Ready
ASC: 0x04, ASQ: 0x02 Logical Unit Not Ready, Initializing Command Required

>
> Maybe the ASC can be used for fine graining (and thus generalizing a rule),
> rather than just adding another entry to the black list.

I had already mentioned to the vendor that returning 3 would avoid the start 
unit but this hardware has been doing this for a long time so with the 
concern of breaking something else my suggestion was not accepted.


Eddie