On Wednesday 28 March 2007 15:28, Brian Debelius wrote: > So does the statement from btape 'The last block of the first tape > matches.' tell us that everything is ok even though the we received the > error?
Yes, I should have mentioned, that as far as I can see from the write part and the seek/read back part, it worked. That said, as I mentioned, I believe that the WEOF error is indication of a bad driver (or Bacula not understanding Win32 error codes, or a real problem), and I wouldn't run my tape drives that way. > > 6-Mar 18:39 btape: Ready to read from volume "TestVolume1" on device > "HPStorage > Tape0" (Tape0). > Rewinding. > Reading the first 10000 records from 0:0. > 10000 records read now at 1:5084 > Reposition from 1:5084 to 148:13127 > Reading block 13127. > > The last block of the first tape matches. > > Kern Sibbald wrote: > > On Wednesday 28 March 2007 12:57, Brian Debelius wrote: > > > >> A workaround, which I do because i have not figured out how to correct > >> this, is to just make sure your backups do not fill the tape. > >> > > > > First, these problems are not normally fatal, but I wouldn't run my tape drive > > like that. > > > > Excluding tape/drive errors which produce similar problems, the most frequent > > causes of this are: > > > > 1. Old tape drives that don't have a logical end of tape marker (this is not > > likely to be the case except in drives manufactured more than 10 years ago). > > > > 2. Poor tape driver implementation. This is the most common cause. Tape > > driver writers often don't really know what they are doing. The driver must > > read the logical end of tape (this occurs before the physical end of the > > tape) and must signal it to the program. In the Unix world most off brand > > OSes do not signal the end of the tape. I won't mention their names other > > than to say that Solaris, Linux, and I think FreeBSD, do so correctly. > > Correctly signaling a logical end of tape means sending back a error status > > to the write with an errno == ENOSPC then allowing the program to continue > > writing until the hardware end of tape. > > > > Alternatively, the OS can signal with an error status and errno == EIO and > > continue to allow the program to write until the physical end of the tape. > > This is *much* less correct since Bacula does not know if it is a real error > > condition or an end of tape. However, aside from the worrysome error > > messages, the results are the same -- i.e. OK. > > > > The worst case is the OS signals an error status (errno = EIO) and does not > > allow the program to write to the physical end of the tape. This is a bad > > situation, but Bacula should handle it. At least the data can be recovered -- > > in most cases. The problem is when the WEOF fails, one cannot be sure > > whether or not the tape is properly terminated, and there is a chance that > > some restore operation may read off the end of the tape. > > > > 3. Since I think we are talking about Win32, it is possible that the low level > > system calls (via mscrt.dll or whatever the name of the Microsoft > > compatibility layer we use) is not well written to return reasonable/correct > > statuses. This would be equivalent to poorly written Unix OS drivers I > > mentioned above. > > > > > >> brian- > >> > >> [EMAIL PROTECTED] wrote: > >> > >>> Can any one help us fix this problem ? (details below) > >>> > >>> Thank you > >>> > >>> Nawfel BERAICH > >>> Casablanca 9h30 AM > >>> > >>> ----- Message d'origine ---- > >>> De : Brian Debelius <[EMAIL PROTECTED]> > >>> À : [EMAIL PROTECTED] > >>> Cc : bacula-users@lists.sourceforge.net > >>> Envoyé le : Mardi, 27 Mars 2007, 14h15mn 51s > >>> Objet : Re : [Bacula-users] Re : Windows::Permission denied > >>> > >>> You are not to the point to start backing up files yet. This needs to > >>> be fixed first. > >>> > >>> > >>> [EMAIL PROTECTED] wrote: > >>> > >>>> Is it that blocking ? I think that with this kind of error bacula > >>>> > >>> will start the Job and fail while trying to finish it (because it's an > >>> I/O error) but my bacula dont start writing the jobs ! it always say > >>> that there is an error and stop without spending any time in writing > >>> files... :-( ! > >>> > >>>> Thank you so much Brian for you precious help ! > >>>> > >>>> ----- Message d'origine ---- > >>>> De : Brian Debelius <[EMAIL PROTECTED]> > >>>> À : [EMAIL PROTECTED] > >>>> Cc : bacula-users@lists.sourceforge.net > >>>> Envoyé le : Mardi, 27 Mars 2007, 13h25mn 14s > >>>> Objet : Re: Re : Re : Re : Re : [Bacula-users] Re : > >>>> > >>> Windows::Permission denied > >>> > >>>> Ok, you are now beyond my experience. Can someone help with fixing his > >>>> EOF error? > >>>> > >>>> 26-Mar 18:35 btape: End of Volume "TestVolume1" at 148:13128 on device > >>>> "HPStorag > >>>> eTape0" (Tape0). Write of 64512 bytes got -1. > >>>> 26-Mar 18:35 btape: btape Error: Error writing final EOF to tape. This > >>>> Volume ma > >>>> y not be readable. > >>>> ../../stored/dev.c:1688 ioctl MTWEOF error on "HPStorageTape0" (Tape0). > >>>> ERR=Inpu > >>>> t/output error. > >>>> > >>>> brian- > >>>> > >>>> > >> ------------------------------------------------------------------------- > >> Take Surveys. Earn Cash. Influence the Future of IT > >> Join SourceForge.net's Techsay panel and you'll get the chance to share your > >> opinions on IT & business topics through brief surveys-and earn cash > >> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > >> _______________________________________________ > >> Bacula-users mailing list > >> Bacula-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/bacula-users > >> > >> > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
