Hi folks! I have an external hard drive with USB 3 connection, based on a Promise USB-SATA bridge. (This is on NetBSD-current, amd64.)
Unfortunately, after a few minutes of inactivity, the controller will spin down the hard drive. Any access after that (even unmounting the file system there) leads to the process hanging forever. There are kernel messages mentioning IOERROR and TIMEOUT. Even rebooting will hang. - Is there a way to prevent the drive from spinning down? Perhaps some atactl command? - Once the drive has spun down, how do I get out of this state cleanly? Turning the disk off and on again does not work. --Benny.
