Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!uaisun4!mrl
From: mrl@uai.com (Mark R. Ludwig)
Newsgroups: comp.unix.aix
Subject: Re: "rdump" only writes half as much data as "backup"
Message-ID: <1991Jun13.222233.2014@uai.com>
Date: 13 Jun 91 22:22:33 GMT
References: <HENKEL%NEPJT.91Jun12234846@nepjt.ncsuvx.ncsu.edu>
Sender: mrl@uai.com (Mark R. Ludwig)
Reply-To: mrl@uai.com (Mark R. Ludwig)
Organization: Universal Analytics, Inc., Playa del Rey (LA), CA
Lines: 24
In-Reply-To: henkel%nepjt@ncsuvx.ncsu.edu (Chuck Henkel)

In article <HENKEL%NEPJT.91Jun12234846@nepjt.ncsuvx.ncsu.edu>, henkel%nepjt (Chuck Henkel) writes:
>backup -0 -b 126 -f - /u | rsh rs2 dd of=/dev/rmt0 obs=126
>
>The dd dies immediately with "invalid argument to system call" or
>somesuch. In fact, I can't get dd to write on the tape at all.

I *do* hope you mistyped your post and had

	obs=126b
	       ^
or
	obs=126k
	       ^
or something more than 126 bytes!  On the other hand, I tried this and
got:

	dd: 0511-053 The write failed.
	: Invalid Argument

so maybe you did.  In that case, I suggest you try a larger blocksize.$$
-- 
INET: mrl@uai.com       UUCP: uunet!uaisun4!mrl       PSTN: +1 213 822 4422
USPS: 7740 West Manchester Boulevard, Suite 208, Playa del Rey, CA  90293
WANT: Succinct, insightful statement to occupy this space.  Inquire within.