Hello, 18.12.2007 00:47,, pedro moreno wrote:: > Hi. > > I have been working with some tapes for some months, i was > wondering how much data my tape have been writing && erasing. > > I use the command query option 16 and receive this data: > > +---------------+--------+--------+------------+--------+ > | Volume | Mounts | Errors | Writes | Status | > +---------------+--------+--------+------------+--------+ > | FullTape-0007 | 10 | 0 | 19,008,158 | Full | > | FullTape-0015 | 3 | 0 | 4,982,277 | Used | > | FullTape-0014 | 3 | 0 | 5,149,360 | Used | > | FullTape-0004 | 3 | 0 | 4,796,619 | Used | > | FullTape-0001 | 3 | 0 | 5,153,608 | Used | > | FullTape-0013 | 5 | 0 | 8,990,607 | Used | > | FullTape-0011 | 7 | 0 | 10,309,906 | Used | > | FullTape-0010 | 9 | 0 | 13,201,649 | Used | > | FullTape-0009 | 9 | 0 | 18,643,901 | Used | > | FullTape-0008 | 9 | 0 | 17,578,293 | Used | > | FullTape-0006 | 10 | 0 | 15,953,200 | Used | > | FullTape-0005 | 11 | 0 | 20,655,434 | Used | > | FullTape-0003 | 11 | 0 | 20,101,553 | Used | > | FullTape-0002 | 11 | 0 | 19,915,631 | Used > > Now i can see that i don't have any errors, now, what about the other fields: > Mount, is how many times, bacula have been using the command Mount for > the volume? This is my bacula-sd.conf for my tape:
Not only command line mounts, but also automatically initiated ones. Basically, this is the number of times the tapes have been loaded to a drive. ... > The option AlwaysOpen=yes, my understanding is, once bacula use the > command Mount, will always keep the device opened, until he fished all > the jobs, in my case they are each weekend 10 jobs = 95GB total, each > monday 7 jobs = 70GB total. If (and I'm not sure this is the case here as I didn't check this in the code) the mount counter works as I expect, it will only be incremented when a tape is actually loaded or accessed the first time after you manually load it. > My volume retention period is: 80 days. > > HP say this about this tapes: > > Technology Load Unload Cycles Full Volume Back ups (FVB) Number > of Passes > Ultrium 20,000 260 > 1,000,000 > > Them, could please someone explain me what bacula tell me with this > info, i will appreciated a lot. The query should be adapted to your needs, i.e. you should modify the thresholds in the query.sql file, which is rather simple. The errors and mounts columns are rather simple to modify, I think. If you want to get useful thresholds for the no. of writes, you should take your average (or maximum) effective volume capacity, divide thet by the block size you use (probably about 64 k) and multiply with the 260 full backups HP claim the tapes can stand. The result would be your maximum number of writes per tape - or somewhat close to it. Does that help you? Arno > OS: Freebsd 6.1-p16 > Drive: HP Storage Works 232 External. > > ------------------------------------------------------------------------- > SF.Net email is sponsored by: > Check out the new SourceForge.net Marketplace. > It's the best place to buy or sell services > for just about anything Open Source. > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users > -- Arno Lehmann IT-Service Lehmann www.its-lehmann.de ------------------------------------------------------------------------- SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
