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тАО07-25-2003 05:21 AM
тАО07-25-2003 05:21 AM
Having trouble copying data from foreign tape format
I've tried:
$mount/foreign/nolabel $1$mua3:
$mount/over=id $1$mua3:
It mounts the tape, but I can't read/copy any data.
And a few other mount options, but when I try to copy from the media it will not work. Any other mount options or advice I can try?
Thanks,
..Joe
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тАО07-26-2003 12:59 AM
тАО07-26-2003 12:59 AM
Re: Having trouble copying data from foreign tape format
After your mount/over=id $1$mua3
what does "show dev $1$mua3: /full" replies ?
and if you can try it on a other system, is there something on that tape ? ... perhaps its empty?
after it is mounted/over=id
try dump $1$mua3:
... any luck ?
does show error before and after mount increase
Please note I do not have a vms system in front of me, this is just the first thing that I can thing of, I realise you may have already tried all of this, but perhaps if you give us a littel more information someone (perhaps me) will be able to help you futher.
Whatever, enjoy life.
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тАО07-26-2003 06:59 PM
тАО07-26-2003 06:59 PM
Re: Having trouble copying data from foreign tape format
When you say it will not work, what do you mean exactly?
I used to read tapes from ibm systems in a former life, but it's been a long time. In standard ANSI format, there's a tape label, tape marks, volume label, another tape mark, to get through before you get any data. Do you have a format of what the tape is supposed to look like?
Try mounting it /over=id, and then do about six reads into records, rec1, rec2, rec3, etc. Don't use on_error because that will be triggered by the tape marks.
Once you get past the header and volume info, rec6 should be data, can you try this out?
/jeff
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тАО07-28-2003 12:35 AM
тАО07-28-2003 12:35 AM
Re: Having trouble copying data from foreign tape format
Do you have any idea about blocksize of that tape?
Maybe you should try the following:
$ mount/ov:id/block=512
512 Byte or any other value, depending of the true recordsize. I used to have tapes with 650 bytes fixed length years ago, from IBM hosts.
In addition to that, it was EBCDIC
To convert this, there is a system call:
lib$tra_ebc_asc(ebcdic value,ascii value)
There is also a nice tool called EXCHANGE
Do $ help exchange
This tool might help too
Best regards
Beat
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тАО08-04-2003 05:01 AM
тАО08-04-2003 05:01 AM
Re: Having trouble copying data from foreign tape format
ETAPE on the OpenVMS Freeware cd may be useful to you. According to the abstract it will (amongst other things) read EBCDIC tapes.
Regards
ML