From owner-freebsd-questions@FreeBSD.ORG Thu Oct 7 14:13:51 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8DE2816A4CE for ; Thu, 7 Oct 2004 14:13:51 +0000 (GMT) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1EB6E43D41 for ; Thu, 7 Oct 2004 14:13:51 +0000 (GMT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.11/8.12.11) id i97EDkh4014541 for freebsd-questions@freebsd.org; Thu, 7 Oct 2004 09:13:46 -0500 (CDT) (envelope-from dan) Date: Thu, 7 Oct 2004 09:13:46 -0500 From: Dan Nelson To: freebsd-questions@freebsd.org Message-ID: <20041007141346.GA54170@dan.emsphone.com> References: <20041007025138.GA19296@SDF.LONESTAR.ORG> <20041007032416.GK3848@dan.emsphone.com> <20041007105050.GA7349@SDF.LONESTAR.ORG> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20041007105050.GA7349@SDF.LONESTAR.ORG> X-OS: FreeBSD 5.3-BETA7 X-message-flag: Outlook Error User-Agent: Mutt/1.5.6i Subject: Re: Tape xfers topping out at 10K per transaction? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Oct 2004 14:13:51 -0000 In the last episode (Oct 07), Kevin A. Pieckiel said: > I hit the same 10K limit when I use something like this: > > # dd if=/dev/nsa0 of=/dev/null bs=64k > > Is that because tar wrote to the tape with a 10k bock size that even > dd can't read larger blocks? That doesn't seem likely to me, but > then again, what do I know? Blocksize is determined when you write the tape. If you print a document on Letter-size paper, a person reading it can't request it in A4-sized chunks :) -- Dan Nelson dnelson@allantgroup.com