Re: Problem with dd command...

[Jean-Philippe BATTU]

Hello Richard ...

Thanks for your answer


1 / I am using dd 4.1 as follows
$ dd --version
dd (fileutils) 4.1
Written by Paul Rubin, David MacKenzie, and Stuart Kemp.
Copyright (C) 2001 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$

2 / Yes , my system supports SCSI. For example, the command:
tar cvf /dev/st1 /etc/passwd /largefile
will work fine

but I notice that:
dd if=/etc/passwd of=/dev/st1         is OK
but
dd if=/largefile of=/dev/st1     IS NOT OK
because the largefile size is biggest than the default blocksize.


3 / I am using 7.1.94 because my system is a IA64 system


Thanks for your precious help.



Richard Dawe wrote:

> Hello.
>
> Jean-Philippe BATTU wrote:
> > I am using the dd command to write data on a scsi device (/dev/st1 for
> > example). I am working on a linux system  with redhat distribution
> > 7.1.94
> >
> > the simple command :
> > dd if=/foo.tar of=/dev/st1
> > will fail with an error :
> > dd: writing to `/dev/st1': Invalid argument
> >
> > Could you help me to solve this problem, and are you aware
> > bugs with this kind of command. The command works well
> > if a replace /dev/st1 by an standard unix file..
>
> A few questions:
>
> 1. What version of dd are you using? ('dd --version' should show the version.)
>
> 2. Does your kernel have SCSI tape support? Does it have SCSI tape support in
> module form? If so, have you loaded the SCSI tape module?
>
> 3. Why are you using a beta release of RedHat rather than a real release like
> 7.2 or 7.3?
>
> Regards,

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