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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