SubversionProblem: Reverse Proxying to Apache with mod_dav_svn

Hi everyone.

I have NGINGX installed in front of an Apache with mod_dav_svn to access
my Subversion Repositories via WebBrowser and with SVN-Clients.

Adding and committing small files is working well.

But when I try to add/commit a large file (files with ca more than 100
or 200 KiloByte) I get an error.

The NGINGX-ErrorLog says:
2009/09/14 01:02:06 3596#0: signal process started
2009/09/14 01:02:30 3597#0: *75 sendfile() failed (38:
Function not implemented) while sending request to upstream, client:
85.178.219.182, server: svn.my.synology-diskstation.de, request:
“PUT
/repos/Paper-2009-SEISCONF/!svn/wrk/cb91b057-5bb4-084b-bd76-57f91625eb1e/Einfuehrung_Richtlinien%20%5BSchreibgesch%C3%BCtzt%5D.pdf
HTTP/1.1”, upstream:
http://127.0.0.1:2080/repos/Paper-2009-SEISCONF/!svn/wrk/cb91b057-5bb4-084b-bd76-57f91625eb1e/Einfuehrung_Richtlinien%20.pdf”,
host: “svn.my.synology-diskstation.de

The error messages of the Tortoise SVN Client:
Error: Commit failed (details follow):
Error: PUT of
‘/repos/Paper-2009-SEISCONF/!svn/wrk/cf98065e-f6ff-bd45-be26-ba027b7b69bc/Einfuehrung_Richtlinien%20%5BSchreibgesch%C3%BCtzt%5D.pdf’:
502 Bad Gateway (https://svn.my.synology-diskstation.de)

The nginx.conf part for svn:
server {
listen 7080;
server_name svn.my.synology-diskstation.de;
rewrite ^(.*) https://svn.my.synology-diskstation.de$1 redirect;
}

# HTTPS server
#
server {
   listen       7443;
   server_name svn.my.synology-diskstation.de;

   ssl                  on;
  ssl_certificate      /opt/etc/apache2/ssl-cert/subversion.crt;
  ssl_certificate_key  /opt/etc/apache2/ssl-cert/subversion.key;

  ssl_session_timeout  5m;

 ssl_protocols  SSLv2 SSLv3 TLSv1;
  ssl_ciphers 

ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
ssl_prefer_server_ciphers on;
add_header Front-End-Https on;

    location /repos/ {
       set $fixed_destination $http_destination;
        if ( $http_destination ~* ^https(.*)$ )
        {
           set $fixed_destination http$1;
        }

    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Destination $fixed_destination;
     proxy_pass      http://127.0.0.1:2080/repos/;

}

Also in th http{} section of nginx.conf the following is set:

include       mime.types;
default_type  application/octet-stream;
server_names_hash_bucket_size 33;
log_format main '$http_x_forwarded_for';
#log_format  main  '$request_uri - $server_addr - $server_port - 

$remote_addr - $remote_port - $remote_user [$time_local] “$request” ’

'$status $body_bytes_sent “$http_referer” ’

‘"$http_user_agent" “$http_x_forwarded_for”’;

access_log  /opt/etc/nginx/logs/access.log;

sendfile        on;
#tcp_nopush     on;

#keepalive_timeout  0;
keepalive_timeout  65;
client_max_body_size 65M;
client_body_buffer_size 128K;
#gzip  on;

Has anyone an idea whats wrong?
Only files with size smaller than 100 KiloBytes can be added/committed
to the SVN Repository.

Thanks in advance, Helko

Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,6789,6789#msg-6789

Hello!

On Mon, Sep 14, 2009 at 02:24:22AM -0400, [email protected]
wrote:

2009/09/14 01:02:30 3597#0: *75 sendfile() failed (38:
Function not implemented) while sending request to upstream, client:
85.178.219.182, server: svn.my.synology-diskstation.de, request:

Looks like either your OS or filesystem you are using for
client_temp_path has no sendfile() support. Switching off
sendfile should fix this.

Maxim D.