Date: Tue, 13 Apr 2004 09:07:45 -0700 (PDT) From: Sheshka Alexey <pulsar@sky-zebra.net> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/65494: dd bs size _MUST_ be N*512 - bug or feature Message-ID: <200404131607.i3DG7jtw078918@www.freebsd.org> Resent-Message-ID: <200404131610.i3DGAK8A038389@freefall.freebsd.org>
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>Number: 65494 >Category: misc >Synopsis: dd bs size _MUST_ be N*512 - bug or feature >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Apr 13 09:10:20 PDT 2004 >Closed-Date: >Last-Modified: >Originator: Sheshka Alexey >Release: 5.2.1 >Organization: >Environment: FreeBSD service.extmedia.com 5.2.1-RELEASE-p4 FreeBSD 5.2.1-RELEASE-p4 #0: Mon Apr 5 04:54:55 EEST 2004 root@service.extmedia.com:/usr/obj/usr/src/sys/SERVICE i386 >Description: While I'm making root@service.extmedia.com [~] # dd if=/dev/ad0 of=/dev/null bs=1000 count=10 dd: /dev/ad0: Invalid argument 0+0 records in 0+0 records out 0 bytes transferred in 0.000544 secs (0 bytes/sec) it produse error, but root@service.extmedia.com [~] # dd if=/dev/ad0 of=/dev/null bs=4096 count=10 10+0 records in 10+0 records out 40960 bytes transferred in 0.013014 secs (3147361 bytes/sec) all good. On OpenBSD and Linux all woks fine with _ANY_ value of bs ... Is it bug or feature in FreeBSD ? If it is feature , I think this information must presents on it. >How-To-Repeat: dd if=/dev/ad0 of=/dev/null bs=1000 count=10 >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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