Typically rsync exits and reports an error such as:
rsync: writefd_unbuffered failed to write 4 bytes [sender]: Broken
pipe (32)
rsync: write failed on "/Volumes/Backup/big_file.dmg": No space left
on device (28)
rsync: connection unexpectedly closed (67174 bytes received so far)
[sender]
rsync error: error in rsync protocol data stream (code 12) at /src/
rsync-3.0.5/io.c(600) [sender=3.0.5]
when it runs out of space on the destination. On a few occasions,
however, I've seen the ENOSPC error not getting printed. I was able
to reproduce this occasionally, but consistently when the file that
causes the error was very large (e.g. 5GB) and the space available on
the destination was moderate (e.g. 700MB free space resulted in the
error not being displayed, whereas only 300MB resulted in the error
correctly being displayed), and the file already existed on the
destination and was modified on the source (--no-inplace).
Oddly, I can tell that the ENOSPC message is always sent to rsyserr(),
it just wasn't actually printed. I added some fprintf lines to
receive_data in receive.c and rsyserr in log.c (basically dumping the
message that is sent to rsyserr preceded by the function name) and got
this output:
+receive_data(): big_file.dmg [No space left on device]
+rsyserr(): write failed on %s [No space left on device]
+rsyserr(): writefd_unbuffered failed to write %ld bytes [%s] [Broken
pipe]
rsync: writefd_unbuffered failed to write 4 bytes [sender]: Broken
pipe (32)
rsync: connection unexpectedly closed (67174 bytes received so far)
[sender]
rsync error: error in rsync protocol data stream (code 12) at /src/
rsync-3.0.5/io.c(600) [sender=3.0.5]
I'm using the patch below as a temporary workaround, but I'm curious
if anyone has insight as to why rsyserr might not be printing these
messages from the receiver.
Mike
diff -Naur -X rsync3/_build/diff_ignore rsync-3.0.5_base/receiver.c
rsync-3.0.5/receiver.c
--- rsync-3.0.5_base/receiver.c 2008-11-15 16:49:28.000000000 -0600
+++ rsync-3.0.5/receiver.c 2009-03-10 22:18:20.000000000 -0500
@@ -297,6 +315,16 @@
if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
report_write_error:
+ fprintf(stderr, "rsync: write failed on %s: %s\n",
full_fname(fname), strerror(errno));
rsyserr(FERROR_XFER, errno, "write failed on %s",
full_fname(fname));
exit_cleanup(RERR_FILEIO);
