Eric, Paul, Thanks for all your help. Looks like we have a tape drive that's going south on us from the checks we've run over the weekend. We've already got a new drive, just need to get it installed. Scott --- In [EMAIL PROTECTED], Eric Siegerman <[EMAIL PROTECTED]> wrote: > On Fri, Aug 20, 2004 at 07:08:47AM +0800, Scott Frisbie wrote: > > Ran the revised shell and am attaching it to the mail along with the other files. > > Thanks. Unfortunately, all it does is convince me that some > *really weird* stuff is going on :-( > > Running the headers through "od -c" was to prove to us that what > you'd shown in your email is what was really there, as opposed to > having been further corrupted by cut-and-paste, CTRL-M's causing > parts of lines to be overwritten on the screen, etc. > > I am now convinced that what you showed was for real. Too bad; I > was really hoping that there were control characters in either > amanda.conf or disklist that were causing this. There aren't. > > Here are those headers, turned back into plain text, but with > non-printable characters turned into escape sequences: > > AMANDA: TAPESTART DATE 20040810 TAPE BootCamp207\n\f\n > AMANDA: FILE 20040810 192.168.3.224 /home/shared/perllib lev 1 comp"N program /bin/gtar\nTo restore,"position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 nis /var/lib/dhcp lev 0 comp N program /bin/gtar\nTo restore, position tape at start\xA0of file and run:\n\tdd if=<tape> bs=32k skip=1 | /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /usr/shares/marketing lev 1 comp"N program /bin/gtar\nTo restore,"position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 cvs /etc lev 0 comp"N program /bin/gtar\nTo restore,"position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /home/mailhub/scottf/recover_test lev 0 comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 192.168.3.224 /home/odin/reports/scripts lev 1 comp"N program /bin/gtar\nTo restore,"position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 nis /var/yp lev"0 comp N program /bin/gtar\nTo restore, position\xA0tape at start\xA0of file and run:\n\tdd if=<tape> bs=32k skip=1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 192.168.3.224 /home/odin/stats lev 1 comp"N program /bin/gtar\nTo restore,"position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 nis /var/named lev 0 comp"N program /bin/gtar\nTo restore,"position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /usr/shares/support lev 1 comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 192.168.3.224 /etc lev 0 comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 nis /etc lev 0 comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /usr/shares/IT_Dept lev 0 comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /home/amanda lev 1 comp N program /bin/gtar\nTo restore, position\xA0tape at start\xA0of file and run:\n\tdd if=<tape> bs=32k skip=1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /home/archive lev 0 comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /home/snips lev 0 comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /home/os-iso lev"1 comp N program /bin/gtar\nTo restore, position\xA0tape at start\xA0of file and run:\n\tdd if=<tape> bs=32k skip=1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /home/sus lev 0 comp"N program /bin/gtar\nTo restore,"position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /etc lev"0 comp N program /bin/gtar\nTo restore, position\xA0tape at start of file and run:\n\tdd if=<tape> bs=32k skip=1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 intrepid /usr/shares/integration lev 2 comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 192.168.3.224 /var/lib/mysql lev 1 comp"N program /bin/gtar\nTo restore,"position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 cvs /usr/CVS lev 0 comp N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: FILE 20040810 192.168.3.224 /usr/archive lev 0 comp N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > AMANDA: TAPEEND\xA0DATE 20040810\n\f\n > > Here's the same thing, with the *expected* variations (host, > path, dumplevel) ironed out, and the results run through > "sort | uniq -c": > > 2 AMANDA: FILE 20040810 HOST PATH lev # comp N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > 1 AMANDA: FILE 20040810 HOST PATH lev # comp N program /bin/gtar\nTo restore, position tape at start\xA0of file and run:\n\tdd if=<tape> bs=32k skip=1 | /bin/gtar -f... -\n\f\n > 1 AMANDA: FILE 20040810 HOST PATH lev # comp N program /bin/gtar\nTo restore, position\xA0tape at start\xA0of file and run:\n\tdd if=<tape> bs=32k skip=1"| /bin/gtar -f... -\n\f\n > 6 AMANDA: FILE 20040810 HOST PATH lev # comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape> bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > 2 AMANDA: FILE 20040810 HOST PATH lev # comp"N program /bin/gtar\nTo restore, position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > 8 AMANDA: FILE 20040810 HOST PATH lev # comp"N program /bin/gtar\nTo restore,"position tape at start of file and run:\n\tdd if=<tape>"bs=32k skip\xBD1"| /bin/gtar -f... -\n\f\n > 1 AMANDA: FILE 20040810 HOST PATH lev"# comp N program /bin/gtar\nTo restore, position\xA0tape at start of file and run:\n\tdd if=<tape> bs=32k skip=1"| /bin/gtar -f... -\n\f\n > 2 AMANDA: FILE 20040810 HOST PATH lev"# comp N program /bin/gtar\nTo restore, position\xA0tape at start\xA0of file and run:\n\tdd if=<tape> bs=32k skip=1"| /bin/gtar -f... -\n\f\n > 1 AMANDA: TAPEEND\xA0DATE 20040810\n\f\n > 1 AMANDA: TAPESTART DATE 20040810 TAPE BootCamp207\n\f\n > > Things to notice: > 1. Some of the spaces have been turned into \xA0 > (which is ' ' | 0x80) > > 2. Some of the "="s have been turned into \xBD > (which is '=' | 0x80; hmmm...) > > 3. Some of the spaces have been turned into '"' > (which is *not* ' ' | 0x80) > > 4. (3) can happen anywhere from 0-4 times in a given header, but > at fairly predictable places > > 5. No characters other than ' ' and '=' have been corrupted > > I don't have a clue what all this means, I'm afraid. It still > doesn't smell like hardware data corruption -- it's not > completely regular, but it is semi-regular. Still, to rule that > out, it'd be interesting (to put it mildly) to see whether > similar corruption is occurring in the actual backup data as well > as in the headers. Try this: > 1. Run a test backup *without* a tape in the drive; it'll run in > degraded mode, leaving the backups in the holding disk > > 2. Copy the backups out of the holding disk to a temporary > location > > 3. Run amflush > > 4. DD the backups off of the tape -- do *not* try to use > amrestore or amrecover; we want the bits exactly as they're > on tape, except that we use "bs=32k skip=1" to discard the > same headers we were examining above: > dd bs=32k skip=1 <$TAPEDEV >file > > 5. Similarly, peel the headers off of the holding-disk-file > copies. That looks similar to step 4: > dd bs=32k skip=1 <file1 >file2 > > 6. Compare the corresponding files from steps 4 and 5. (Most > diff's other than GNU diff can't handle binary files, so use > cmp instead). (Note that for huge backups -- by default, > ones greater than 2 GB -- the holding-disk data will be split > into several files, which you'll have to reassemble before > doing the comparison.) > > Of course we expect the files from steps 4 and 5 to be identical; > if they're not, you've almost certainly got hardware problems. > > If the files *are* identical -- especially on sizeable backups -- > but the headers show the same sort of weirdness as before, I > won't know what to make of that :-( > > -- > > | | /\ > |-_|/ > Eric Siegerman, Toronto, Ont. [EMAIL PROTECTED] > | | / > It must be said that they would have sounded better if the singer > wouldn't throw his fellow band members to the ground and toss the > drum kit around during songs. > - Patrick Lenneau -- ______________________________________________ Check out the latest SMS services @ http://www.linuxmail.org This allows you to send and receive SMS through your mailbox.
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