Hi Paul, thanks for the fast answer!
"Paul Slootman" p...@debian.org – 3. September 2020 16:27 [...] >> opening connection using: ssh -l root localhost rsync --server --sender >> -vvvlHogDtprxe.iLsfxCIvu -B2048 --numeric-ids . /var/lib/lxc (12 args) > > How are you invoking rsync? Please give the exact command line, > including what you current working directory is. User is backuppc, working directory is /var/lib/backuppc. Command line: sh-5.0$ rsync -vvv --rsh=ssh --numeric-ids --perms --owner --group -D --links --hard-links --times --block-size 48 \ --recursive --one-file-system root@localhost:/var/lib/lxc /mnt/testrsync/ >/mnt/testrsync/stdout.txt 2>/mnt/testrsync/stderr.txt > Are you actually using ssh to connect to localhost and transferring the > data over that ssh link? In this case (2), I issued the command from within a screen session. Here, ssh is used internally by rsync (--rsh=ssh). The idea is to change privilege, as backuppc is allowed to execute rsync via authorized_keys. Also it is nice that the same mechanism works for all hosts to be backed up. > If so, then these lines are very strange in the case (1) text: > >> Got remote protocol 31 >> Negotiated protocol version 28 > > I would expect an rsync to negotiate the highest protocol version > possible, so this looks like it's talking to a newer version than > itself. In contrast to case (2), this case is running from within BackupPC. AFAIK, BackupPC_dump directly executes ssh rsync —server —sender … and implements the receiving side itself. So, I would conclude that BackupPC_dump implements protocol version 28. >> -- rsync stderr >> rsync error: errors with program diagnostics (code 13) at log.c(245) >> [receiver=3.2.3] >> rsync: [generator] write error: Broken pipe (32) >> -- end of stderr > > Because of the "errors with program diagnostics" I would have expected > more messages... So did I :-) > It would be most helpful if you could follow the instructions on > rsync.samba.org/issues.html especially de second half of > question 3. Thanks for the reference, I will try it later. Andreas.
