On 3/18/2013 6:31 PM, Paul Johnson wrote: > Like others, I have been having problems with random backup failures due > to network IO errors. See this thread for another example: > > http://bacula.10910.n7.nabble.com/Win32-FD-Write-error-sending-N-bytes-to-Storage-daemon-td35109.html > > I understand that this is not a bug in Bacula: its going to be a problem > somewhere in the stack on either the client or the storage machine. As > someone notes in the thread above, because Bacula transports hundreds of > gigabytes over a single TCP channel, something that happens only once > every hundred GB has a high probability of breaking a backup while being > completely unnoticeable anywhere else. Maybe its a dodgy network card, > maybe something in the TCP/IP stack on Windows XP. But that doesn't help > solve the problem; I can't afford to swap components until I perturb > this out of existence (I've tried the usual remedies). Therefore I'd > like to suggest that Bacula support a transport mechanism other than TCP. > > UDT (http://udt.sourceforge.net/) looks ideal. Its got a mature > implementation for Linux, Windows, OS X and BSD. The API is close to a > drop-in replacement for TCP, so not a lot of new code, and it could be > made an option with TCP remaining the default. UDT is designed for high > volume data transfer, and is probably more efficient than TCP over a > LAN, which is the typical use-case for Bacula. > > A Google search for "Bacula UDT" turned up nothing, which is surprising. > Am I really the first person to suggest this?
I believe I have seen suggestions for using UDP before, and Dr. Gu's UDT library would be the logical choice. However, I'm not entirely convinced it would be a drop-in replacement within the Bacula client-server framework. Still, you should submit a feature request, (See http://www.bacula.org/en/?page=feature-request), to get the dev's feedback. ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
