-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I worked up some patches to use the ata SLEEP command instead of STANDBY to save more power, but I have found that something in the kernel keeps issuing a request to the disk ( no mounted filesystems on it ) every 10 minutes. This request resets the link bringing the disk back up to STANDBY mode. blktrace shows the process name is "pool" so I guess it is a work queue item? Inserting a dump_stack() was not helpful. How can I track down the source of this request? -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSQzETAAoJEJrBOlT6nu75Pu0IAMOSNFLbklwCjmVMFZjuQk2x zrc6xOfPPmPsFqHUPG1TaoSUgzGJXsbZLUeaVFV2ZEIOFJPVl8Vn4Izkzyemk9dp xtgbtECLMCMZujpqGpL6UwBwBepUfDvoRSpdpcjZ28XByrXS1V8SrQtBw/4HtnDm Pkmf2MXxlqGDhAxCCuKHfnvjlP2pjfEt8teFH9Vsj4znMJw4BUC8IOepDATwbGd3 WEEv5kqmN27K7ZiEE3zo3jaQMlUtWrJwdyU+1zwvvdTpos/USdem9P4n80s5+CYm S7e0awRKOjleEZnozyNU9VO5tLViuKyp2096/6+gvna7MIE/Mgj7aWI/S4+A28c= =f2IA -----END PGP SIGNATURE----- -- 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