rsync error: error in rsync protocol data stream (code 12) at io.c(189)

Gunn, Bobby Bobby.Gunn at FMR.COM
Mon May 3 20:35:12 GMT 2004

Rsync Issue Solaris8

When performing a simple rsync between servers I was getting the
following error:

root:#> rsync -e ssh -va /export/home/a078479/bob
ksh: rsync:  not found
rsync: connection unexpectedly closed (0 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(189)

I was thorghrough in setting up rsync to be used between servers and was
still getting errors , I did the following to Setup Rsync.

Added each host into the /etc/hosts file.

Added each users ssh keys from each node to their ./.ssh/authorized_keys
so I dont have to use password files or anything of the sort.

Added rsync Port Alias to /etc/services:

echo "rsync 873/tcp" >> /etc/services

Added rsync Daemon to /etc/inetd.conf:

echo "rsync stream tcp nowait root /usr/bin/rsync rsyncd --daemon" >>

Recycle (HUP) inetd daemon:

for i in `ps -ef |grep inetd | grep -v grep | awk '{print $2}'
kill -HUP $i

And still got the error as indicated below.

So I tried to do some debugging with the syntax below.

root:#> rsync -e 'ssh -vv -x' -ra /export/home/a078479/bob
OpenSSH_3.4p1, SSH protocols 1.5/2.0, OpenSSL 0x0090602f
debug1: Reading configuration data /fisc/openssh/etc/ssh_config
debug1: Applying options for *
debug1: Rhosts Authentication disabled, originating port will not be
debug1: ssh_connect: needpriv 0
debug1: Connecting to smmk39 [] port 22.
debug1: Connection established.
debug1: identity file /export/home/a078479/.ssh/identity type 0
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug2: key_type_from_name: unknown key type '-----END'
debug1: identity file /export/home/a078479/.ssh/id_rsa type 1
debug1: identity file /export/home/a078479/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software version
debug1: match: OpenSSH_3.4p1 pat OpenSSH*
debug1: Local version string SSH-1.5-OpenSSH_3.4p1
debug1: Waiting for server public key.
debug1: Received server public key (1152 bits) and host key (1024 bits).
debug1: Host 'smmk39' is known and matches the RSA1 host key.
debug1: Found key in /export/home/a078479/.ssh/known_hosts:1
debug1: Encryption type: 3des
debug1: Sent encrypted session key.
debug1: cipher_init: set keylen (16 -> 32)
debug1: cipher_init: set keylen (16 -> 32)
debug1: Installing crc compensation attack detector.
debug1: Received encrypted confirmation.
debug1: Trying RSA authentication with key
debug1: Received RSA challenge from server.
debug1: Sending response to host key RSA challenge.
debug1: Remote: RSA authentication accepted.
debug1: RSA authentication accepted by server.
debug1: Sending command: rsync --server -logDtpr . /export/home/a078479/
debug1: Entering interactive session.
debug1: fd 0 setting O_NONBLOCK
debug2: fd 1 is O_NONBLOCK
ksh: rsync:  not found
debug2: fd 0 is not O_NONBLOCK
debug1: fd 1 clearing O_NONBLOCK
debug1: Transferred: stdin 4, stdout 0, stderr 23 bytes in 0.1 seconds
debug1: Bytes per second: stdin 34.4, stdout 0.0, stderr 197.7
debug1: Exit status 127
rsync: connection unexpectedly closed (0 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(189)

Here I found out that after secure shelling over to the remote system
the rsync command was not being found!!

As the user I did a which and found out that rsync was in the
/usr/local/bin/rsync so I decided to link rsync to a system binary

sdal19:/# ln -s /usr/local/bin/rsync /usr/bin/rsync
sdal19:/# which rsync

root:#> rsync -e ssh -va /export/home/a078479/bob
building file list ... done

wrote 129 bytes  read 40 bytes  112.67 bytes/sec
total size is 0  speedup is 0.00


Looks like the system or user profile was not setting set when ssh logs
in and this simple change will fix it in my case.

Bobby Gunn

More information about the rsync mailing list