svnsync无法从源空闲断开恢复

Question

如果我尝试将第三方存储库镜像到本地存储库，那么当svnsync将300M+文件上载到速度较慢的目标服务器时，源服务器将断开连接，并且svnsync不会尝试重新连接它，而是进入无限循环。如何解决此问题？

C:\progs\svnsync-dir>svnsync --version
svnsync, version 1.14.0 (r1876290)
   compiled May 24 2020, 17:07:49 on x86-microsoft-windows

C:\progs\svnsync-dir>svnsync --steal-lock sync https://targetreposito.acme.com/s
vn/Reponame
Stole lock previously held by 'my-host-name:ab204a7a-756f-2947-af9c-caf904a8945d
'
Transmitting file data .........................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
............< here it hangs

​

​

​

​

Answer 1

编译完svn通信库后，来自主干svnsync的serf而不是挂起现在使用An error occurred during decompression或(如果

[global]
http-compression = no

)，然后使用Malformed XML: no element found。

在转储svnsync和源服务器之间的HTTP会话后，我发现源服务器关闭了连接，而svnsync正在将部分接收到的增量刷新到目标服务器。

解决方案是使用禁用了slice的pv工具，并使用一个巨大的缓冲区来保存完整的响应：pv -q -C -B4G

添加到/etc/hosts：

127.0.0.3 svn.acme.com
1.2.3.4   svn.acme.com.real

然后运行：

sudo socat TCP-LISTEN:443,reuseaddr,fork EXEC:"./hugebuf.sh svn.acme.com.real 443",nofork

hugebuf.sh (简化)：

#!/bin/bash
host=${1:?}
port=${2:?}
exec 4>"/dev/tcp/${host:?}/${port}"
cat <&0 >&4 &
pv -q -C -B4G <&4

最后，正常运行svnsync命令。现在它可以提交这个修订了。