* Victor Duchovni <victor.ducho...@morganstanley.com>:

> Note, if rsync propagates file permissions before it copies file contents,
> an incomplete queue file could be picked up by the queue manager before
> it is completely written. So it is safer to rsync outside "incoming"
> (in the same file-system) and then rename into "incoming".

Good point. rsycn it some place else, the mv it atomically.
 
> The above said, rsync also uses temporary file-names while creating files,

Yes.

> and uses rename to finalize the file copy only once the contents are
> all there, so Wietse's suggestion will likely work, provided rsync's
> temp file names don't look like Postfix queue-ids (the queue manager
> incoming directory scans skip filenames that don't look like queue-ids).
> 
> The code in question is src/global/mail_queue.c:mail_queue_id_ok()
> which skips any filenames that are not alphanumeric (with '_').
> 
> So provided rsync's temp names include some other chars (I think
> it uses ".tempname" to keep temp files "out of view" while they
> are being created) there is no need for the intermediate copy...

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebra...@charite.de | http://www.charite.de
            

Reply via email to