"rsync: writefd_unbuffered failed to write 4 bytes" on mounted share

Stefan-Michael Guenther rsync at in-put.de
Mon Apr 27 10:19:10 GMT 2009


we are using rsync to backup data to a NAS share.

The share is mounted with the following command:

mount -t nfs /media/nas  -o 

rsync is called by rsnapshot with the command:

rsync -a --stats --delete --numeric-ids --relative --delete-excluded 
/samba /media/nas

The process crashes when it tries to copy *.mdb files (15-600MB):

rsync: writefd_unbuffered failed to write 4 bytes [sender]: Broken pipe (32)
rsync: close failed on 
(XY_I)/2006-11-16/XY_app.968/Logdb/.XYlog.mdb.REP380": Input/output 
error (5)
rsync error: error in file IO (code 11) at receiver.c(688) [receiver=3.0.3]
rsync: connection unexpectedly closed (65324 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(635) 

The FAQ mentions this kind of error but only in combination with a 
rsyncd running on the remote site.

BTW: rsync is version 3.0.3

Thanks for any hints or suggestions,


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