Unexpected disconnect?

JHZhang at mdanderson.org JHZhang at mdanderson.org
Fri Sep 30 18:23:35 GMT 2005

My job,

rsync -auv --exclude ".snapshot" --delete --safe-links 
/NFSvol/bam1/vg1/home1 /Volumes/xraid3/bam1/vol1/ 
>/var/local/log/bam1home1.log 2>&1

is several times with the following message,
Invalid checksum length 1913126912
rsync error: protocol incompatibility (code 2) at 
rsync: writefd_unbuffered failed to write 103 bytes: phase "unknown" 
[generator]: Broken pipe (32)
rsync error: error in rsync protocol data stream (code 12) at 

There is no error record at the system level. The system is Mac Tiger with 
rsync 2.6.3.
I don't have this problem for Mac Panther with rsync 2.6.2.
I read the "Current issues" for rsync, which indicated that the remote 
side rsync drops the connection for some reason. In my case, the source is 
an NFS mount, the destination is a local directory. Nothing is REMOTE.
If I rerun the job, the copying will continue, eventually it will finish 
the whole thing. 
What is going on?

Jun H. Zhang
Biostatistics and Applied Mathematics
MD Anderson Cancer Center
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