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тАО03-03-2006 05:24 AM
тАО03-03-2006 05:24 AM
I have such a saveset from a VAX v6.2 system disk that I want to get off tape and onto another disk on my test v7.3-2 Alpha. I want to do this because I will need to restore it into an LD disk a few times and don't want to wait on tape restore each time.
The disk was originally backed up on a TZ88 with:
$ backup -
/image -
/ignore=(interlock,nobackup) -
$40$DIA5: -
MKA200:060225.bck -
/save /noinitialize -
/label=060225 -
/media_format=compaction -
/block=32768
The error I get is:
$ copy mkc300:[]060225.bck dkb400:[vax_disks]
%COPY-E-OPENIN, error opening MKC300:[]060225.BCK;1 as input
-RMS-F-IRC, illegal record encountered; VBN or record number = 0
I'm fairly certain this is the message when the blocksize on tape is too big.
What's the "magic" number?
Thanks in advance,
Art
Solved! Go to Solution.
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тАО03-03-2006 05:28 AM
тАО03-03-2006 05:28 AM
Re: Saveset blocksize on tape to allow COPY to disk
For clarity ...
mkc300:[ no spaces in here ]060225.bck
It's not a "box",
Art
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тАО03-03-2006 05:34 AM
тАО03-03-2006 05:34 AM
Re: Saveset blocksize on tape to allow COPY to disk
The "magic" number is 32256.
Bill
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тАО03-03-2006 05:36 AM
тАО03-03-2006 05:36 AM
Re: Saveset blocksize on tape to allow COPY to disk
Backup writes a saveset to disk with a record format of "Fixed length 32256 byte records". The "magic" number is 32256.
Bill
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тАО03-03-2006 05:37 AM
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тАО03-03-2006 05:37 AM
тАО03-03-2006 05:37 AM
Re: Saveset blocksize on tape to allow COPY to disk
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тАО03-03-2006 05:55 AM
тАО03-03-2006 05:55 AM
Re: Saveset blocksize on tape to allow COPY to disk
RMS uses a signed word (16-bit value) on disk to maintain the record length, because -1 (and -2 ?) are used for special meanings. 32768(10) = 8000(16) gives an error as it does not fit into a signed 16-bit value (-32768..0..32767).
- mkc300:[ no spaces in here ]060225.bck
the "[]" is not necessary, unless your "SET DEFAULT" is on a search list. In that case, you will end up with several copies on disk, because RMS takes the directory default from the search list.
Many people are aware of this by now - a typical call from somebody new to VMS is when he does a:
$ directory tape:
while logged in to SYSTEM. The workaround is easy:
$ directory tape:[] ! ;-)
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тАО03-03-2006 06:02 AM
тАО03-03-2006 06:02 AM
Re: Saveset blocksize on tape to allow COPY to disk
Easy: it's 32768 - 512
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тАО03-03-2006 07:01 AM
тАО03-03-2006 07:01 AM
Re: Saveset blocksize on tape to allow COPY to disk
BACKUP MKC300:[]060225.BCK dkb400:[vax_disks]060225.BCK/LOG
This might work. I'm not sure.
Phil
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тАО03-03-2006 07:11 AM
тАО03-03-2006 07:11 AM
Re: Saveset blocksize on tape to allow COPY to disk
%BACKUP-F-ONEF11DEV, both input and output must not be save sets
Art