On Thu, Dec 16, 2010 at 04:16:59PM -0500, Alan Stern wrote: > On Wed, 15 Dec 2010, Jon 'maddog' Hall wrote: > > > Sarah and Alan, > > > > When I plug a USB3.0 drive that has multiple filesystems on it into the > > USB3.0 port (either the one native to the W510 or the Transcend > > ExpressCard Adapter) the multiple file systems show up as I expect them > > to show up. > > > > However, when I chose to "safely remove the drive", all three > > filesystems are unmounted (good), but about five-ten seconds later all > > three filesystems are mounted again. Again, this happens both with the > > native controller and the Transcend. This does not happen when I mount > > the same USB3.0 drive under a USB2.0 port. Under USB2.0, only when I > > remove the drive and re-insert it do the file systems remount. > > > > I think the USB2.0 behavior is proper, since people would want time > > (after unmounting the filesystems and making the drive "safe to remove") > > to be able to physically remove the cable/drive. > > > > This issue also does not appear with a USB 2.0 flash drive in the USB > > 3.0 slot, nor does it appear with a single-filesystem USB 3.0 drive > > plugged into a USB 3.0 port. > > Go ahead and collect a usbmon trace showing this behavior. Start the > trace just before you click on "safely remove the drive", and end it > when the filesystems reappear. I'm wondering if the USB 3.0 drive can't handle the suspend. Can you please send the dmesg as well for the same sequence? Sarah Sharp -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
