On 11 July 2014 13:58, ToddAndMargo <[email protected]> wrote: > Hi All, > > I have a bash script for synchronizing a flashing drive (target) > with my hard drive (source) I take to customer sites (with a read > only switch so I don't spread viruses). > > I currently "rsync" 11 different directories. Each sync line > looks like this: > > rsync -rv --delete $MyCDsSource/Linux $MyCDsTarget/.; sync; sync > > Problem: it is slow -- takes three hours. To help the > speed issue, I upgraded from USB 2 to USB 3. Backup went > from 3 hr-15 min to 3 hr-5 min. It is almost faster > to wipe the stick and rewrite it. > > Depending on the media you are writing to, that might be the right solution in anycase.
> Anyone know of a way to speed up rsync? > > So rsync is going to have to read every file on target and host and see if various things have changed. Depedning on what the flash is formatted as that is going to be a lot slower (journals on flash are evil). You also have to deal with bus contention and other things when doing a massive rsync over USB. [I lose my mouse and keyboard on some systems and just go do something else as using them makes the writes much slower. > Many thanks, > -T > -- Stephen J Smoogen.
