From owner-freebsd-hackers Wed Mar 22 06:04:29 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id GAA05532 for hackers-outgoing; Wed, 22 Mar 1995 06:04:29 -0800 Received: from UUCP-GW.CC.UH.EDU (root@UUCP-GW.CC.UH.EDU [129.7.1.11]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id GAA05523 for ; Wed, 22 Mar 1995 06:04:18 -0800 Received: from Taronga.COM by UUCP-GW.CC.UH.EDU with UUCP id AA19529 (5.67a/IDA-1.5); Wed, 22 Mar 1995 07:40:35 -0600 Received: by bonkers.taronga.com (smail2.5p) id AA13331; 22 Mar 95 07:39:51 CST (Wed) Received: (from peter@localhost) by bonkers.taronga.com (8.6.11/8.6.6) id HAA13328; Wed, 22 Mar 1995 07:39:50 -0600 From: Peter da Silva Message-Id: <199503221339.HAA13328@bonkers.taronga.com> Subject: Re: Problems with 2940 and 950210snap To: steve2@genesis.tiac.net (Steve Gerakines) Date: Wed, 22 Mar 1995 07:39:50 -0600 (CST) Cc: freebsd-hackers@FreeBSD.org In-Reply-To: <199503220015.AAA06755@genesis.tiac.net> from "Steve Gerakines" at Mar 22, 95 00:15:44 am X-Mailer: ELM [version 2.4 PL23] Content-Type: text Content-Length: 634 Sender: hackers-owner@FreeBSD.org Precedence: bulk > One concern I have is regarding tape length. It > looks like dump wants to calculate the tape length in advance to avoid > reaching end of media. QIC-40/80 tape drives have a variable number > of blocks, depending upon how many have been marked bad, so how would > I get a decent length? You have to estimate. Streaming tape drives have variable size, too, depending on how much they stream. This is pretty much a standard problem in tape drives in general, apart from the old 9-tracks where you had good random access. > Is it a problem for dump to just fall off the > end of the tape? NO more than on any other tape device.