dovecot - May 2014 - dsync changing source permission to "root" in backup mode

Hi,

We have dsync failing once in a while when running in "backup" mode.
What's strange is that the result is that the file permissions on the 
*source* machine ends up with the wrong permissions (set to uid 0).

Even though the dsync manual clearly says:
"Backup mails from default mail location to location2 (or vice versa, if 
-R parameter is given). No changes are ever done to the source location. 
Any changes done in destination are discarded."

Running: 'dsync -R -o mail_home=/users/maildir backup ssh -c arcfour 
src-host "dsync -o mail_home=/users/maildir"'

I know it's running as root, but even then ... it shouldn't modify the 
source in "backup" mode ??

The error message from dsync when failing is:

dsync-remote(root): Error: Cached message size larger than expected 
(5292 > 5289)
dsync-remote(root): Error: Maildir filename has wrong S value, renamed 
the file from 
/users/maildir/.Sent/cur/1381224782.M959810P3574.mail,S=5292,W=5411:2,S 
to /users/maildir/.Sent/cur/1381224782.M959810P3574.mail,S=5289:2,S
dsync-remote(root): Error: Corrupted index cache file 
/users/maildir/.Sent/dovecot.index.cache: Broken physical size for mail 
UID 1040
dsync-remote(root): Error: dsync(dst-host): 
read(/users/maildir/.Sent/cur/1381224782.M959810P3574.mail,S=5292,W=5411:2,S) 
failed: Cached message size larger than expected (5292 > 5289)


/Peter

Oh ... sorry... I forgot the last log-line. (see below)

btw... tested with versions:
Between 2.2.12 in both ends, and
between dst=2.2.12, src=2.2.13


On 2014-05-27 15:03, Peter Mogensen wrote:
> The error message from dsync when failing is:
>
> dsync-remote(root): Error: Cached message size larger than expected
> (5292 > 5289)
> dsync-remote(root): Error: Maildir filename has wrong S value, renamed
> the file from
> /users/maildir/.Sent/cur/1381224782.M959810P3574.mail,S=5292,W=5411:2,S
> to /users/maildir/.Sent/cur/1381224782.M959810P3574.mail,S=5289:2,S
> dsync-remote(root): Error: Corrupted index cache file
> /users/maildir/.Sent/dovecot.index.cache: Broken physical size for mail
> UID 1040
> dsync-remote(root): Error: dsync(dst-host):
>
read(/users/maildir/.Sent/cur/1381224782.M959810P3574.mail,S=5292,W=5411:2,S)
> failed: Cached message size larger than expected (5292 > 5289)
dsync-local(root): Error: dsync(src-host): read() failed: read((fd)) 
failed: dot-input stream ends without '.' line