rsync: connection unexpectedly closed

[Kevin Korb]

I don't remember whether or not you said you were running rsync over ssh
but if you are you can also debug the ssh layer.  You can even do it at
both ends....

On the server run a debugging sshd on an alternate port with:
/usr/sbin/sshd -dDp222
(note that this will only accept 1 connection, debug to the terminal,
then exit)
then on the client use rsync -e "ssh -vp222" to go verbose and use the
debugging port.

On 10/13/2016 08:05 PM, Kip Warner wrote:
> On Thu, 2016-10-13 at 16:58 -0700, Wayne Davison wrote:
>> No, that's totally expected. While select() is waiting for I/O to
>> arrive, it returns to rsync every 60 seconds to allow it to decide if
>> it wants to continue waiting or do something else. You have to find
>> the process that is exiting first to discover why the connection is
>> closing. This assumes that it's not a network issue, where all of the
>> programs get a closed-connection
>> error.
> 
> Hey Wayne,
> 
> I took Paul's advice and tried monitoring with lsof. This is what I
> saw:
> 
>     $ lsof -p 3104
>     COMMAND  PID USER   FD   TYPE     DEVICE SIZE/OFF      NODE NAME
>     rsync   3104  kip  cwd    DIR       0,19     4096 214695958 /home/kip/Disk_Backups/kip-desktop/yakkety
>     rsync   3104  kip  rtd    DIR      179,2     4096         2 /
>     rsync   3104  kip  txt    REG      179,2   460584      7817 /usr/bin/rsync
>     rsync   3104  kip  mem    REG      179,2    42692      3974 /lib/arm-linux-gnueabihf/libnss_files-2.13.so
>     rsync   3104  kip  mem    REG      179,2    71624      3971 /lib/arm-linux-gnueabihf/libnsl-2.13.so
>     rsync   3104  kip  mem    REG      179,2    38608      3976 /lib/arm-linux-gnueabihf/libnss_nis-2.13.so
>     rsync   3104  kip  mem    REG      179,2    26484      3972 /lib/arm-linux-gnueabihf/libnss_compat-2.13.so
>     rsync   3104  kip  mem    REG      179,2  2953776     18967 /usr/lib/locale/locale-archive
>     rsync   3104  kip  mem    REG      179,2  1216624      3965 /lib/arm-linux-gnueabihf/libc-2.13.so
>     rsync   3104  kip  mem    REG      179,2   130448     41964 /lib/arm-linux-gnueabihf/libgcc_s.so.1
>     rsync   3104  kip  mem    REG      179,2    43024     10745 /lib/arm-linux-gnueabihf/libpopt.so.0.0.0
>     rsync   3104  kip  mem    REG      179,2    26240      1840 /lib/arm-linux-gnueabihf/libacl.so.1.1.0
>     rsync   3104  kip  mem    REG      179,2    17904      1854 /lib/arm-linux-gnueabihf/libattr.so.1.1.0
>     rsync   3104  kip  mem    REG      179,2    10170     28719 /usr/lib/arm-linux-gnueabihf/libcofi_rpi.so
>     rsync   3104  kip  mem    REG      179,2   126236      3961 /lib/arm-linux-gnueabihf/ld-2.13.so
>     rsync   3104  kip    1w  FIFO       0,10      0t0      8455 pipe
>     rsync   3104  kip    2w  FIFO       0,10      0t0      8456 pipe
>     rsync   3104  kip    3u  unix 0xdbda86c0      0t0      8466 socket
> 
> And on the strace...
> 
>     ...
>     3104  select(4, [3], [1], [3], {60, 0}) = 1 (out [1], left {59, 999978})
>     3104  write(1, "h\340\0\7\0y@\312\227\241\236\255\367\312\3637\323X\206\314\250\372\362P1\202\374\"i\265c\16"..., 57452) = 57452
>     3104  select(4, [3], [], [3], {60, 0})  = 0 (Timeout)
>     (repeats above line until client (sender) reports connection timed out)
> 
> Sender reports the following until it times out...
> 
>     ...
>     match at 32949141504 last_match=32949141504 j=251382 len=131072 n=0
>              32.95G  96%   83.55MB/s    0:00:12
> 
> 
> 

-- 
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
	Kevin Korb			Phone:    (407) 252-6853
	Systems Administrator		Internet:
	FutureQuest, Inc.		Kevin at FutureQuest.net  (work)
	Orlando, Florida		kmk at sanitarium.net (personal)
	Web page:			http://www.sanitarium.net/
	PGP public key available on web site.
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,

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