rsync: connection unexpectedly closed

Alain Fauconnet alain at
Tue Jan 13 02:55:50 GMT 2004

Quoting a mail from Richard van Beers:

>Im trying to use rsync to sync about 23GB over a local LAN.
>I use 2.5.6 compiled on SCO OpenServer 5.0.6, this is the command I use:
>rsync --verbose --stats --recursive --times --perms --links --delete
>(I have tried it with and without --compress, as the archive hinted this
>may be a problem with -z, but same result)
>Unfortunatly, it stops with an error (from rsyncd.log):
>2003/10/14 10:59:13 [11256] rsync on user2 from eurux03 (
>2003/10/14 11:22:49 [11256] wrote 12129660 bytes  read 225836 bytes  total
>size -2005091632
>2003/10/14 11:25:07 [11256] rsync: connection unexpectedly closed (225836
>bytes read so far)
>2003/10/14 11:25:07 [11256] rsync error: error in rsync protocol data
>stream (code 12) at io.c(165)
>2003/10/14 12:01:28 [11693] rsync on user2 from eurux03 (
>2003/10/14 12:22:31 [11693] wrote 12564617 bytes  read 130771 bytes  total
>size -2005090220
>2003/10/14 12:24:26 [11693] rsync: connection unexpectedly closed (130771
bytes read so far)
>2003/10/14 12:24:26 [11693] rsync error: error in rsync protocol data
>stream (code 12) at io.c(165)
>These are just 2 tries, but every time,on slightly different places, when
>syncing a large area, it stops with this error.
>How can I continue to trace _why_ it is unexpectedly closing the
>connection? Im somewhat out of ideas.
>Whenever I try smaller areas, the rsync command works fine.

I'm in the same boat, rsync'ing over 100Gb of Maildir mailboxes between
two Solaris 7 based mail servers. Can't figure it out. It works
for smaller filesystems that I rsync as well (e.g. /var/spool/mqueue).

I've considered resource limits and made the user as 'root' in rsync's
config file (it used to be the user who owns all the mailboxes) but that
didn't help.

Richard, if you read this, have you made any progress?

Alain Fauconnet
IT Security Specialist & CISO -- ITServ
Asian Institute of Technology

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