Date: Sun, 6 Jan 2008 15:36:45 GMT From: Martin Laabs <martin.laabs@mailbox.tu-dresden.de> To: freebsd-gnats-submit@FreeBSD.org Subject: docs/119386: bsdlabel and newfs on DVD-RAM (handbook ch. 18.7.9) Message-ID: <200801061536.m06Fajca089766@www.freebsd.org> Resent-Message-ID: <200801061540.m06Fe1um017776@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 119386 >Category: docs >Synopsis: bsdlabel and newfs on DVD-RAM (handbook ch. 18.7.9) >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-doc >State: open >Quarter: >Keywords: >Date-Required: >Class: doc-bug >Submitter-Id: current-users >Arrival-Date: Sun Jan 06 15:40:01 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Martin Laabs >Release: 6.2 >Organization: - >Environment: FreeBSD martin.laabs 6.2-RELEASE-p4 FreeBSD 6.2-RELEASE-p4 #0: Thu Apr 26 17:40:53 UTC 2007 root@i386-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC i386 >Description: In chapter 18.7.9 of the handbook (Using a DVD-RAM) is a description how to use/prepare a DVD-RAM so that it can be used with freebsd. Therefore you have to use bsdlabel and newfs. Since the blocksize of an DVD-RAM ist 2048 byte and bsdlabel and newfs (also with the -s 2048 option) do at least one write with blocksize smaller than 2048 byte both commands fails. >How-To-Repeat: For example the first command, which is "dd if=/dev/zero of=/dev/acd0 count=2", produces the following output on my system (Optiarc DVD RW AD-7170A/1.02 device) su:~$ dd if=/dev/zero of=/dev/acd0 count=2 dd: /dev/acd0: Invalid argument 1+0 records in 0+0 records out 0 bytes transferred in 0.000138 secs (0 bytes/sec) If I add the bs=2k option it works fine: su:~$ dd if=/dev/zero of=/dev/acd0 count=1 bs=2k 1+0 records in 1+0 records out 2048 bytes transferred in 0.001740 secs (1177026 bytes/sec) >Fix: >Release-Note: >Audit-Trail: >Unformatted:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200801061536.m06Fajca089766>