On Tue, Aug 23, 2016 at 04:16:42PM -0500, Richard Owlett wrote: > On 8/23/2016 4:05 PM, Andrew M.A. Cater wrote: > >On Tue, Aug 23, 2016 at 03:18:30PM -0500, Richard Owlett wrote: > >>I'm copying Debian distribution DVDs. > >>I used > >> cp -R /media/cdrom0 /media/richard/myrepository/dvd_1 > >> > >>It gave me what I wanted [*N.B.* I did not want dvd_1.iso] > >>It was SLOW. > >>The man page for rsync suggested that it could do it faster. > >>Can it? > >>If so, what is correct syntax to get the same result as the command above? > >> > >>TIA > > > >Loop mount the DVD > > > >mount -t iso /media/cdrom0 -o loop /mnt > > > >cd /mnt > > > >and you should see all the files within the DVD. > > > >cd /media/richard/repository/dvd_1/ > > > >rsync -pavz /mnt/ . > > > >Should do it. If you stop and restart rsync, it should start from the place > >it left off,more or less. > > > >Hope this helps, > > > >AndyC > > Thanks. I'll try it as soon as copy of DVD#2 ends. > What's special about a loop mount in this circumstance? As I read the rsync > man page it was pretty similar to cp and it had accepted a plain automount > [I'm on Jessie with Mate DE]] >
Loop mount allows you to "see inside" the mounted media, effectively. I've just noticed a typo - if you want to copy and paste the instructions, then for you, at least, that will need to be cd /media/richard/myrepository/dvd_1/ ; rsync -pavz /mnt/ . [I missed out the "my" in myrepository :) ] As someone else pointed out: you still need to copy everything so it can be slow especially on 4G - essentially you're probably copying from one portion of the disk to another so lots of reads and writes on the same disk. Rsync just allows you to start/stop much more readily. All the best, AndyC
