On Tue, Sep 04, 2007 at 01:01:28AM +0200, mlists wrote: > On Mon, 2007-09-03 at 18:44 -0400, Roberto C. Sánchez wrote: > > On Tue, Sep 04, 2007 at 12:30:32AM +0200, mlists wrote: > > > > > > my main problem with backing-up Maildirs is that in courier new mails > > > are in "new" and when read those same mails are in "cur" > > > couple of big mails read result in huge pointless data-transfers. > > > anyone know some simple solution for that? > > > > > I don't think so. > > > > roberto@miami:~$ dd if=/dev/zero of=test_mail bs=1024 count=102400 > > 102400+0 records in > > 102400+0 records out > > 104857600 bytes (105 MB) copied, 1.07652 seconds, 97.4 MB/s > > roberto@miami:~$ /usr/bin/time mv test_mail tmp/ > > 0.00user 0.00system 0:00.00elapsed 200%CPU (0avgtext+0avgdata 0maxresident)k > > 0inputs+0outputs (0major+244minor)pagefaults 0swaps > > roberto@miami:~$ /usr/bin/time mv tmp/test_mail /var/local/ > > 0.00user 0.99system 0:01.35elapsed 73%CPU (0avgtext+0avgdata 0maxresident)k > > 0inputs+0outputs (1major+252minor)pagefaults 0swaps > > > > On the above system, /home and /var are on seperate partitions. Moving > > from one directory to another on the same partition is roughly > > equivalent (in terms of processing power) to creating a symlink. Moving > > from one partition to another is what takes time and I/O bandwidth. > > > > Regards, > > > > -Roberto > > sorry for being totally unclear about this. > Sorry for being so dense as to not catch your meaning the first time. > I'm rsync'ing Maildirs from location1 to location2. > On day1 all the new mails (which are in the "new" subdir) are transfered > from loc1 to loc2. On day2 all these mails have been read and they're > deleted from the backup (because they are not in "new" anymore) and > re-transfered from loc1 to loc2, as they are now in subdir "cur". > > what I would like is for rsync to be smart and "see" that it's the same > mail, only it has been moved from "new" to "cur". > I see what you mean. There was a thread [0] on the rsync mailing list about this. I wonder if that might help at all. Regards, -Roberto [0] http://lists.samba.org/archive/rsync/2006-September/016338.html -- Roberto C. Sánchez http://people.connexer.com/~roberto http://www.connexer.com
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