On 03/11/10 00:38, Tejun Heo wrote:
The wdidle3-1.03 DOS tool can fix that. Google it.
I have disassembled that tool here, and found a few
vendor-unique commands inside it. But thus far have
not managed to get them working natively in Linux.
I really need a SATA tracer/analyser..
Hmmm... so they don't respond to ATA APM command?
..
No. The vendor-unique commands appear to download a small firmware
packet to the drive, which reprograms it for a longer "IDLE-3" timeout.
"IDLE-3" is what WD call this vendor-specific "powersaving" mode,
and it is not intended to be adjustable. Except via that little
DOS utility hack, and even WD no longer make that available.
But I found it by googling for it, and it can change the timeout
up to 30 seconds from the default of 8. So I set my WD 1.5TB drive
to use 30, and things are now acceptable.
Ugh (again)!
--
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
