Date: Thu, 16 Mar 2006 13:47:03 +0100 From: Paolo Tealdi <paolo.tealdi@polito.it> To: Alex Zbyslaw <xfb52@dial.pipex.com> Cc: freebsd-questions@freebsd.org Subject: Re: dump level 9 Message-ID: <7.0.1.0.0.20060316133119.020459c8@polito.it> In-Reply-To: <44194A05.4010600@dial.pipex.com> References: <7.0.1.0.0.20060315131135.0327a978@polito.it> <441821AD.1080605@dial.pipex.com> <7.0.1.0.0.20060315153306.02165290@polito.it> <4418344D.8080003@dial.pipex.com> <7.0.1.0.0.20060316091138.01fa4ae8@polito.it> <44194A05.4010600@dial.pipex.com>
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At 11.20 16/03/2006 +0000, Alex Zbyslaw wrote: >Clutching at straws, here are some things I might try: > >1) "which dump" - just to be absolutely sure /sbin/dump >2) Remake dump from /usr/src. > >3) Make sure base system is OK. Cvsup, buildworld, buildkernel etc. >This would bring you up to -p12 and require reboot. If behaviour >still the same, file a PR. > >4) Depending on your C prowess, instrument dump with some debugging >info - at the point where it decides to back up a file, print out >the relevant variables (the dates on the file and the date that it >is being compared against). This will generate a lot of output but >you can just hit ^C after a few seconds of printing. I don't think >gdb would be an option as dump forks to > >5) Do a level 0 of / home. Check that the restore actually works by >actually restoring at least some of it, not just using ls. Then >newfs /home being very careful and then restore it! (Being >paranoid, I would make more than one dump, including one to tape, >and would restore one of the backups to some spare disk). I will do a newfs on saturday afternoon, after doing some backups (also on tape). After this, if the problem persists, i'll do the pass 2, 3 and 4. In my opinion something gets damaged at filesystem level after an energy block (date are similar). I did an fsck (more times) but the problem persists : probably fsck doesn't recognise the problem. It could be important to do debugging for this problem, but it's a production disk (big) and i can't "play" with it too much. Thanks a lot for your support. Best regards, Paolo Tealdi Ing. Paolo Tealdi Servizi Informatici per le Biblioteche Politecnico Torino Phone : +39-011-5646714 , FAX : +39-011-5646799 C.so Duca degli Abruzzi, 24 - 10129 Torino - ITALY Email : paolo.tealdi@polito.it
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