Am Wed, 21 Jun 2006 18:31:18 +0200 schrieb Rumko <[EMAIL PROTECTED]>:
> Item n: Spooling data while despooling it > Origin: Rumko <[EMAIL PROTECTED]> > Date: 21 June 2006 > Status: > > What: Currently when fd runs out of data or maximum spool size is > reached, the sd starts despooling. While it is despooling, the fd does > not spool the data until all data has been despooled. For performance > reasons (and it would prolong tape's lifetime), the fd should spool > data while the data is being despooled by the sd. > > Why: Better performance on tape drives (writing would be > prolonged, because while writing the data, more would be spooled and > made available to the sd) and longer lifetimes for the tapes. > > Notes: I was thinking of 2 solutions. Perhaps a FIFO? But there > comes a question, (since i dont know much about fifos) how much data > can be put into a fifo at one time and if theres a limit, what happens > when you reach it? Will the fd still be able to start piping data into > the fifo after it has already filled it once? ... The second solution > would be separate files. Perhaps the sd should inform the fd 5 seconds > (which should be settable in the config files) before running out of > data that the fd should start spooling data into a new file and leave > the old one exclusively to the sd (so that there would be no conflicts > or any other problem that would fall into this realm). > > > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users That's interesting for me, too! Spooling is very good, but shouldn't slow down backup since this affects per-night-capacity. Also, I thought about simultaneous jobs going on several drives of one machine at a time: Could it be done to give each job or each drive a spoolfile on disk that works on a fifo principle like Rumko mentioned? Hope this thing isn't too big! Best Regards, Christoff All the advantages of Linux Managed Hosting--Without the Cost and Risk! Fully trained technicians. The highest number of Red Hat certifications in the hosting industry. Fanatical Support. Click to learn more http://sel.as-us.falkag.net/sel?cmd=lnk&kid=107521&bid=248729&dat=121642 _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
