News Group Posts

tape scsi error

From: Mike Brown <mike@tkg.ca>
Subject: Re: cpio error on SCO openserver 5
References: <LAo68.18$tr6.3451@news0.optus.net.au>
<3c5b1617.154145107@news.sf.sbcglobal.net> 
Date: Sat, 02 Feb 2002 00:30:12 GMT

Matt Schalit wrote:
> 
> On Fri, 01 Feb 2002 04:12:27 GMT, "Dan Drummond" <dannyd@als.com.au> wrote:
> 
> >Hi,
> >
> >Has anyone ever seen the error "reached end of medium on input" when trying
> >to restore a backup created with cpio? How do i restore these files..
> >cpio -vicdmB < /dev/rct0 doesn't work.
> >
> >thanks
> >dd
> 
> Cpio gives you this error if you are using shell
> redirection and the end of the media has been reached.
> 
>   'End of medium on input (output). To continue,
>    type device/file name when ready.'
> 
> Suggestions:
> ==============
> Try to create the archive with -O rather than >
> and then restore with -I rather than <.
> 
> What are the results?
> 
> Does the -O operation claim it's reached the end of
> the tape and wants anonther tape to store more data?
> 
> Does the -I operation claim it's reached the end of
> the tape and wants another tape to read more data from?
> 
> What about the dtype suggestion or Tom's patch?
> 
> Matthew

Concise posting Matthew, thanks.

The DAT technology can "mark" bad sections of the tape,
and will jump over these during backup.  It is possible
to reach end-of-tape at ..3Gbytes on a 4/8, and NOT
realize this from a shell script.  During restore you
find a prompt for the next tape, and are without a
full backup.

I have tested tapes with Microlite's BackupEdge utility
called "edge.sizer" and found tapes to be MUCH smaller
then they should be.  With shell redirection no
error was picked up.

Download and try the evaluation version of Edge, and
see what it says.

Mike

-- 
Michael Brown

The Kingsway Group
 

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