writefd_unbuffered failed to write 4 bytes

Ramkumar Santoshi ramkumar.santoshi at gmail.com
Tue Apr 29 00:05:07 GMT 2008

Hi All.

On Mac OS10.4, using rsync 3.0, it stops during a transfer.

I mount an SMB share, and then use the line:
sudo rsync -avhi --delete --stats --timeout=360 --progress
--log-file=/Volumes/backup/20080429/rsynclog.txt  --exclude="*:*"
/Volumes/RAID_One /Volumes/backup/20080429

There's a few terabytes of data, and it never finishes a complete run.

It can stop at anywhere during the transfer, from 5mins, but usually a few
hours into it.

on the current issues and debugging section on the website, it mentions how
to debug a remote rsync, or daemon, but as far as i know, these dont apply
because i'm copying the data on the same machine.

See the error log below. Is there anywhere else i can check for errors?

Also, what's the characters mean in the logfile, such as:
>f..tpog.... RAID_One/data/file
       8.39M 100%    4.12MB/s    0:00:01 (xfer#3478, to-check=1224/8633)

Any help much appreciated.

2008/04/28 20:48:46 [3149] rsync: writefd_unbuffered failed to write 4 bytes
[sender]: Broken pipe (32)
2008/04/28 20:48:46 [3149] rsync: connection unexpectedly closed (735103
bytes received so far) [sender]
2008/04/28 20:48:46 [3149] rsync error: error in rsync protocol data stream
(code 12) at io.c(600) [sender=3.0.0]
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