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Re: Preventing rsync of copying always all files to my pen



Paul Smith wrote:

I have often to synchronize a directory from my computer to a pen
drive. To accomplish this, I use the following command:

rsync -urva --delete /home/psmith/mydirectory/
/media/MYPEN/mydirectory/
Which messages do you see and what mount options are used for mounting the
FAT partition? I've tried your scenario and I get messages like this:

rsync: chgrp "/media/USBDRIVE/." failed: Operation not permitted (1)

Generally using -a on ext[23] -> FAT transfers is not a good idea,
because -a implies -rlptgoD (according to man-pages) but FAT does not
support user or group information, links or devices

I suppose a simplier "rsync -rtv" should accomplish what you need.

You might even want to try unison - it can synchronise two folders in both
directions, copying newest files from one directory to its counterpart.

Thanks, Adalbert. The messages that I get are:

"rsync warning: some files vanished before they could be transferred
(code 24) at main.c(1040) [sender=3.0.3]"

This happens with accented filenames.

After having removed all accents, I do not get any error message.

Still the reported problem occurs: rsync needs to copy all files after
umounting and subsequent mounting of my pen. This is the behavior that
I am wanting to control: rsync should copy only modified files. Before
unmounting my pen, rsyinc copies only modified files; but after having
umounted my pen and mounted it again, rsync copies all files. Any
ideas?

Are you sure it is really doing a copy? Rsync will attempt to update the file attributes and display the name if you use -v, but they won't quite match between fat and linux filesystems so it will do it again next time. It shouldn't take much time, though.

--
  Les Mikesell
   lesmikesell gmail com


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