> From: Fritz Whittington [mailto:f.whittington@xxxxxxx] > Sent: Sunday, February 01, 2004 10:46 AM > > > >> Also, once you are have troubleshooted your issue, always manually > >> unmount > >> your device before unplugging it, especially if you are > performing write > >> operations to it. > >> > How very important! If you don't believe that delayed-write is > working, try mounting a USB fs (one that uses a solid-state > memory, like > Compact Flash or Smart Media), copying several MB of files > from it to a > hdd, and note how slow it is. Then delete all the files on the USB > device, and copy all the files back. The copy is done almost in an > instant! But then, when you unmount it, you can see it take several > seconds to actually write the files from cache. So if you > yanked it out > without unmounting it, you wouldn't really have anything. > It would be nice if usb devices such as this could be forced to write their data ASAP instead of waiting for a umount (despite a performance lag). It is so tempting for many people that I know to just go ahead and unplug. I am going to do some research on this.
