Paul Slootman via rsync <rsync@lists.samba.org> wrote: > On Sun 02 Jun 2024, Chris Green via rsync wrote: > > > I have an rsync daemon running on a 64-bit (x86_64) system which I > > successfully use for backups from several other 64-bit systems on my > > LAN. > > > > I want to use it for backups from a BeagleBone Black (32-bit, armv7l) > > but it fails as follows:- > > > > root@bbb:~# rsync -a /etc chris@backup::bbb > > Password: > > pre-xfer exec returned failure (256) > > rsync error: requested action not supported (code 4) at > > clientserver.c(1171) [Receiver=3.2.7] > > rsync: [sender] read error: Connection reset by peer (104) > > root@bbb:~# > > > > Is it simply not possible to do what I'm trying to do or is there some > > way to tell the rsync daemon to work with connections from 32-bit > > clients? > > There should be no problem communicating between 32-bit and 64-bit > systems with rsync. > > Make sure that the versions of rsync aren't too different, you may run > into problems with rsync options not being supported on the old one. > > The error message says that there was a problem with the pre-xfer exec. > Check what that's doing (in the daemon's rsyncd.conf), most probably > that is the problem. > Yes, I saw that the error is in the 'pre-xfer exec' but it's exactly the same as works with all the 64-bit clients. I.e. it's the same rsyncd and configuration on the server.
.... after a lot of digging around I found the problem. The first pass of the pre-xfer exec generates a warning error message which was failing because it was trying to send it to a system that no longer exists. The 64-bit/32-bit difference was a red herring, it was just that the 64-bit systems had been doing backups for a while so didn't generate any error messages (and so no mail failures). Thanks for making me dig further! :-) -- Chris Green ยท -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
