On Saturday 01 November 2003 03:33, Rick Duvall wrote:
>So, if the first 2 feet are damaged, then can't I take the cartridge
> apart and cut the first 2 feet off of the reel and re-assemble the
> cartridge?
No, because the tapes own hidden headers that tell the drive what it
is, and if the data is compressed etc, are on that first piece, take
it off, or bulk erase the tape, and unless your drive is capable of
actually reformatting the tape (few are I'd guess, in my dat/DDS
usages here, I've never found a drive that could do that) then the
tape is week old toast and can be thrown out.
>Where these tapes are hanging up is about the 6th filesystem tarred
> and written to tape. The amverify is failing on the 6th fileno.
Humm, that almost doesn't walk like that duck. How about the next
tape, whats it do? When amverify fails, do an mt -f /dev/nst0 tell
and write it down. Rewind and rerun until it fails again. If both
tells are the same, then something is wrong with that tape. If they
aren't by several block numbers, then there may be some other effect
at work. What, I haven't the foggiest without more clues.
>Sincerely,
>
>Rick Duvall
>----- Original Message -----
From: "Gene Heskett" <gene.heskett AT verizon DOT net>
>To: "Rick Duvall" <rduvall AT onlinehighways DOT net>;
> <amanda-users AT amanda DOT org> Sent: Friday, October 31, 2003 9:05 PM
>Subject: Re: Verify Tape Integrity
>
>> On Friday 31 October 2003 23:18, Rick Duvall wrote:
>> >Is there any way to write data on the entire length of a tape and
>> > try to read it back to verify that all that was written over the
>> > entire tape can be read? I like to compare it with a DOS
>> > scandisk, only for a tape instead of a filesystem.
>> >
>> >Sincerely,
>> >
>> >Rick Duvall
>> >Online Highways
>> >System Administrator
>> >(541) 997-8401 x 111
>>
>> There is amverify, but AFAIK it only reads to the end of the data
>> written, not to the actual EOT.
>>
>> As a comment, generally speaking, a bad tape is normally damaged
>> in the first 2 feet, and in my experience if you can read the
>> first file, you can read the rest of the tape. But that, and a
>> buck will get you a cup of coffee most places too.
>>
>> --
>> Cheers, Gene
>> AMD K6-III@500mhz 320M
>> Athlon1600XP@1400mhz 512M
>> 99.27% setiathome rank, not too shabby for a WV hillbilly
>> Yahoo.com attornies please note, additions to this message
>> by Gene Heskett are:
>> Copyright 2003 by Maurice Eugene Heskett, all rights reserved.
--
Cheers, Gene
AMD K6-III@500mhz 320M
Athlon1600XP@1400mhz 512M
99.27% setiathome rank, not too shabby for a WV hillbilly
Yahoo.com attornies please note, additions to this message
by Gene Heskett are:
Copyright 2003 by Maurice Eugene Heskett, all rights reserved.
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