-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 11/5/2013 10:56 AM, Douglas Gilbert wrote: > I think that you might find that almost any SCSI command > (translated to its ATA equivalent command) will wake up a SATA > disk. Perhaps just this sequence: fd = open(<ata_bloc_device>) ; > close(fd) ; is sufficient.
No, otherwise hdparm, udisks, etc would not be able to issue the CHECK POWER command without waking the disk. Most commands do wake the drive, but as far as I can see, nobody is sending down any, and more importantly, the wake is happening within the kernel pm resume path, not by userspace after resume. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSeRuFAAoJEJrBOlT6nu75zOcH/1eKDZW73qiWN5x1mHnkZCx2 +khrRybBM+d6iwsfKODdMPkfXe89QxNxZArPMP60OtCTzfnUuzpK9SfNuzB2CB3p zKX1H5tOQEowUd9A2DpzJmN89UGi/+ZVDEQBlo6byqXKhd/Gj10TuD8vyaHSSadN XYYvWIlreayELaI70uQLdntfHufProdoZQ+kB9pQhvvq8IhtcuARjUeaGbnHxznc UT2SvYeGritndPLzBOAeWw6/WZ/Rvzo5Q9s2nZAWyWnNlrdt95cmLl+56vCP2AJW b4Tf4TrPGbhB0EPFU+vWy6mT4DFReqDbkMvgsWoOrFF8OPgrUx3l+9gWifejLw8= =77FK -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
