Hello, Dnia 19-07-2007 o godz. 14:36 Kern Sibbald napisał(a): > On Thursday 19 July 2007 13:49, Mariusz Czulada wrote: > > Hi all, > > > > I didn't give up so made my own investigation. Now it seems I found the > > source of my problem. I'll describe what I discovered. I need your help > > to verify if it is a good way and how to include required changes into > > bacula code. > > > > First reference materials: > > > > Programming reference (PRGOGREF): > > ftp://ftp.software.ibm.com/storage/devdrvr/Doc/IBM_Tape_Driver_PROGREF.pdf > > Setup and operator guide (SOG): > > ftp://ftp.software.ibm.com/storage/3576R1_SOG.pdf > > > > And a remainder of my environment: > > > > I use an IBM xSeries host with CentOS 4.3. DDS-5 internal drive (working > > perfectly), and IBM TS3310 tape library, with two LTO-3 drives connected > > directly (i mean without FC switch) to two QLogic QLA2460 HBA. IBM tape > > drivers taken from IBM site. Catalog is created in PostgreSQL 8.1.5. > > Bacula 2.0.2. Both pg and bacula compiled from sources. > > > > ----------------- > > > > [....] > > First to talk about the code above: this is very special case code that > is > machine dependent, and so it is not really appropriate to add to Bacula, > if > that is what you are suggesting, as Bacula tries where ever possible to be > platform neutral. In addition, most of the information you want above is > normally placed in the system log.
Accept it. > > Concerning the error code returned and the special case which shows that > an > EOT was reached. I believe that this is either that you have not > configured > the directives in your Device resource correctly for your tape driver (not > always easy) or a bug in the kernel scsi driver for that device. Bacula > should not receive an I/O error code if an EOT is reached. I assume that I could still misconfigured the devices. The truth is, that as a not very experienced bacula user I have problems with setting proper options, while checking all possible yes/no permutations is not reasonable. Thats why I was hoping for hints from users (almost all I set was 'btape test' based). Can hardly imagine that noone uses IBM drives/libraries nor QLogic HBAs. > > I would recommend that you look at the existing Bacula code and assume > it is > correct, then figure out if there are any existing Bacula directives that > allow you to adapt Bacula to properly interpret the codes that are coming > back from the kernel driver. If this is not the case, then look at the > codes > that the Bacula device driver expects and complain to your OS supplier > that > his tape driver does not conform to Unix standards, which work perfectly > fine > on Linux, Solaris, and FreeBSD. For sure, my workaround will be Plan B. > > One other thought, since you mention FC. You may be running with some > software or hardware that is caching the data and status codes between the > tape drive and Bacula. HP HBA's do so by default. Bacula works with the > drive in synchronous mode. If something buffers data and/or returned > status > codes, it will *never* work with Bacula -- Bacula will not see the LEOT > marker nor the EOT marker (status codes) at the correct time, so will > fail. This is a point I could find any info about. I checked Qlogic site, IBM site (FC card is in fact QLA2460, but IBM branded) but found nothing about synchronous mode. Perhaps it is named as different parameter or option, but could not identify it. If someone knows more about this HBA I will really apreciate your help. > > Regards, > > Kern > > > > > > > TIA for your comments, > > > > Mariusz Czułada > > > > ---------------------------------------------------- > > Już w ten piątek Ty i Ona o godz. 16:00 w Sopocie na molo! Będziesz? > > > ---------------------------------------------------- Zapraszamy na XXVI Festiwal Piknik Country Mrągowo 2007! W ostatni weekend lipca - wielkie muzyczne wydarzenie! http://klik.wp.pl/?adr=http%3A%2F%2Fadv.reklama.wp.pl%2Fas%2Fpiknikcountry.html&sid=1229 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
