Il 10/06/2011 12:02, James Harper ha scritto: >> hi, >> >> i am running Bacula 5.0.2 on Debian Lenny amd64 with a Certance LTO2 >> streamer. >> >> since a while my backupjobs does not get finished, as bacula says >> >> >> 10-Jun 06:54 lx01-sd JobId 2422: Despooling elapsed time = 00:00:51, Transfer >> rate = 22.89 M Bytes/second >> 10-Jun 06:56 lx01-sd JobId 2422: Writing spooled data to Volume. Despooling >> 1,167,755,347 bytes ... >> 10-Jun 06:57 lx01-sd JobId 2422: Despooling elapsed time = 00:00:48, Transfer >> rate = 24.32 M Bytes/second >> 10-Jun 06:58 lx01-sd JobId 2422: Writing spooled data to Volume. Despooling >> 1,167,755,351 bytes ... >> 10-Jun 06:59 lx01-sd JobId 2422: End of Volume "LX03DO01" at 159:2982 on >> device "Certlto2" (/dev/nst0). Write of 64512 bytes got -1. >> 10-Jun 06:59 lx01-sd JobId 2422: Re-read of last block succeeded. >> 10-Jun 06:59 lx01-sd JobId 2422: End of medium on Volume "LX03DO01" >> Bytes=158,745,581,568 Blocks=2,460,713 at 10-Jun-2011 06:59. >> >> LTO2 should be able to store 200GB on a media? >> > > 158GB is probably a bit low. 85GB is definitely a problem. Is this something > that has been getting worse over time? How old are the tapes? > > Does your tape drive vendor provide any drive assessment tools? Eg HP provide > Library& Tape Tools. > > LTO is pretty smart and the heads are organised so that immediately after the > media passes under the write head it passes under the read head and the data > just written is read. If there is a problem reading it the data is rewritten. > Obviously every time a block has to be rewritten the effective capacity of > the tape is reduced. The drive assessment tools should tell you how much this > is happening (margin, I think) and otherwise report the condition of the > drive and the tapes. > > Some of our tapes are down to about 175GB capacity. Curiously it is the set > of 5 tapes used on Fridays that are suffering from this problem which is > strange as they are used about 5 times less than the other tapes. > > James > ------------------------------------------------------------------------------ > EditLive Enterprise is the world's most technically advanced content > authoring tool. Experience the power of Track Changes, Inline Image > Editing and ensure content is compliant with Accessibility Checking. > http://p.sf.net/sfu/ephox-dev2dev > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users
I suggest trying a btape fill test command. Just my 2 cents. -- Marcello Romani ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
