On Sat, Jun 19, 2004 at 03:58:29PM +1000, dan@geek.com.au wrote:
> 
> >Number:         25967
> >Category:       bin
> >Synopsis:       dump -a not continuing after end of media
> >Confidential:   no
> >Severity:       serious
> >Priority:       low
> >Responsible:    bin-bug-people
> >State:          open
> >Class:          sw-bug
> >Submitter-Id:   net
> >Arrival-Date:   Sat Jun 19 05:59:00 UTC 2004
> >Closed-Date:
> >Last-Modified:
> >Originator:     Daniel Carosone
> >Release:        NetBSD 2.0E
> >Organization:
> rare
> >Environment:
> System: NetBSD schizo 2.0E NetBSD 2.0E (_schizo_) #81: Sun May 23 07:57:56 EST 2004 dan@schizo:/home/NetBSD/obj/p3/home/NetBSD/HEAD/src/sys/arch/i386/compile/_schizo_ i386
> Architecture: i386
> Machine: i386
> 
> /sbin/dump:
>      $NetBSD: crt0.c,v 1.13 2003/07/26 19:24:27 salo Exp $
>      $NetBSD: itime.c,v 1.15 2003/08/07 10:04:14 agc Exp $
>      $NetBSD: main.c,v 1.57 2004/04/21 01:05:32 christos Exp $
>      $NetBSD: optr.c,v 1.33 2004/04/21 01:05:32 christos Exp $
>      $NetBSD: dumprmt.c,v 1.30 2003/08/07 10:04:14 agc Exp $
>      $NetBSD: rcache.c,v 1.21 2003/09/13 10:59:50 simonb Exp $
>      $NetBSD: tape.c,v 1.43 2004/03/15 01:06:06 lukem Exp $
>      $NetBSD: traverse.c,v 1.43 2004/03/24 12:28:51 hannken Exp $
>      $NetBSD: unctime.c,v 1.15 2003/08/07 10:04:15 agc Exp $
>      $NetBSD: ffs_inode.c,v 1.16 2004/03/27 12:59:18 dsl Exp $
>      $NetBSD: ffs_bswap.c,v 1.27 2003/12/31 19:33:13 dbj Exp $
> 
> st0 at scsibus0 target 6 lun 0: <Quantum, DLT4000, CD5A> tape removable
> st0: density code 26, variable blocks, write-enabled
> st0: sync (100.00ns offset 15), 8-bit (10.000MB/s) transfers
> 
> >Description:
> 
> dumping out a filesystem larger than a single tape:
> 
>  # dump 0auhbtf 0 32 /dev/rst0 /media
> 
> I get a write error at about the expected point for when the first
> tape would be full.
> 
>   [14:20:35 EST] DUMP: 41.73% done, finished in 5:14 (at 19:34:48 EST)
>   [14:25:35 EST] DUMP: 42.64% done, finished in 5:09 (at 19:35:01 EST)
>   [14:28:40 EST] DUMP: write error 18584896 blocks into volume 1
> 
> But dump doesn't want to continue onto the next tape:
> 
>   DUMP: Do you want to restart?: ("yes" or "no") yes
>   [14:53:16 EST] DUMP: Closing this volume.  Prepare to restart with new media;
>   [14:53:16 EST] DUMP: this dump volume will be rewritten.

did you try
mt eew 1
before running dump ? This worked for me ...

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--