From owner-freebsd-bugs Tue Jun 18 10:07:31 1996 Return-Path: owner-bugs Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id KAA09993 for bugs-outgoing; Tue, 18 Jun 1996 10:07:31 -0700 (PDT) Received: from palmer.demon.co.uk (palmer.demon.co.uk [158.152.50.150]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id KAA09981 for ; Tue, 18 Jun 1996 10:07:20 -0700 (PDT) Received: from palmer.demon.co.uk (localhost [127.0.0.1]) by palmer.demon.co.uk (sendmail/PALMER-1) with ESMTP id PAA29386; Tue, 18 Jun 1996 15:26:15 +0100 (BST) To: gwk@cray.com cc: freebsd-bugs@freefall.freebsd.org From: "Gary Palmer" Subject: Re: bin/1320: dump limits blocksize to 32K In-reply-to: Your message of "Mon, 17 Jun 1996 15:23:30 +0200." <199606171323.PAA18629@racer.dkrz.de> Date: Tue, 18 Jun 1996 15:26:15 +0100 Message-ID: <29384.835107975@palmer.demon.co.uk> Sender: owner-bugs@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk "Georg-W. Koltermann" wrote in message ID <199606171323.PAA18629@racer.dkrz.de>: > I would prefer to get a warning from dump(8), not an error exit. > There may be other cases to consider, in addition to dumping to a > remote system with rdump(8). > E. g. how about dumping to a locally attached device with the > intention of restoring the tape on another system? The other system > may very well be capable of handling blocksizes > 32. You can't do it. There is a limitation to do with the way the kernel handles the pages that limits the blocksize you can use for dump/restore... The warning is there for a VERY good reason. From what I remember about the discussions in this area with John Dyson and David Greenman, it's not an easily overcome problem either. Gary -- Gary Palmer FreeBSD Core Team Member FreeBSD: Turning PC's into workstations. See http://www.FreeBSD.ORG/ for info