General :: Catching Stderr From Dd Over Ssh?

this might be an interesting one for the bash scripting gurus. I seem to break my teeth on it. The mission:- do a dd over ssh to trasnfer an image to another host- capture the dd PID on the other side- send a USR1 kill signal to it- capture that output on the original host It goes wrong on the last part. This is what I have before that step:dd if=image.gz | gzip -d | ssh host2 "dd of=/dev/vg1/lv1" &PID=`ssh host2 ps aux |grep dd|grep lx05|awk '{ print $2 }'`when I do "ssh host2 kill -USR1 $PIDI get nice outputs to the screen. When I replace the first line with:dd if=image.gz | gzip -d | ssh host2 "dd of=/dev/vg1/l01 2>/tmp/output.txt" &the dd command seemd to die. I suspect a problem with the pipe, since this does work when executing locally on a host without piping.