Kern Sibbald <[EMAIL PROTECTED]> wrote: > > The data will be sent blocked as defined in bacula-fd in each > client. If the SD does not have the same blocking factor, you > will either waste space (if the SD buffer is bigger) or the SD > will do two reads to get a single FD block (if the SD buffer is > smaller). Unless there is a bug, the transfer *should* > work if the two sizes are not the same. I have never tested it > though.
In a moment of stupidity yesterday, I set Maximum Network Buffer Size = 65535 (not 65536) on a Windows 1.36.3 FD. The director thought that it ran the job for that client, but kept it in the Running Jobs list as "Terminated". When I logged onto the Windows system this morning, it had an error message saying that the FD had failed due to the FD's buffer size not being a multiple of the SD's tape block size. At least I think that's what it said. Once I responded to that message and re-started the terminated FD, the director was happy again. I hadn't gotten around to upping the SD to 65536, so I have no idea if this problem is because the value (65535) was not an even multiple of the block size, or if the FD value being greater than the SD value is a problem. In any case, there is apparently a third variable (tape block size) involved when changing the Maximum Network Buffer Size, so one might want to think a little harder before leaping into randomly changing this particular setting. As an aside, I just set both the FD and SD to 65536 on my office notebook, and am seeing a sustained throughput of around 26 megabits/second doing a full backup to USB2 disk. I don't know what it was doing before the change, but I can live with this throughput on a 100 megabit ethernet... -Arthur ------------------------------------------------------------------------- Arthur Emerson III Email: [EMAIL PROTECTED] Network Administrator InterNIC: AE81 Mount Saint Mary College MaBell: (845) 561-0800 Ext. 3109 330 Powell Ave. Fax: (845) 562-6762 Newburgh, NY 12550 SneakerNet: Aquinas Hall Room 13 ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
