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Date:      Thu, 5 Sep 2013 18:20:01 GMT
From:      Patrick Powell <papowell@astart.com>
To:        freebsd-doc@FreeBSD.org
Subject:   Re: docs/181845: Virtualbox Host Setup needs acd0 in /etc/devfs.conf,  also enable atapicam
Message-ID:  <201309051820.r85IK1Q2042514@freefall.freebsd.org>

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The following reply was made to PR docs/181845; it has been noted by GNATS.

From: Patrick Powell <papowell@astart.com>
To: Adam Vande More <amvandemore@gmail.com>
Cc: freebsd-gnats-submit@freebsd.org
Subject: Re: docs/181845: Virtualbox Host Setup needs acd0 in /etc/devfs.conf,
 also enable atapicam
Date: Thu, 05 Sep 2013 11:19:47 -0700

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 On 09/05/13 10:55, Adam Vande More wrote:
 > On Thu, Sep 5, 2013 at 12:23 PM, Patrick Powell <papowell@astart.com 
 > <mailto:papowell@astart.com>> wrote:
 >
 >
 >     >Number:         181845
 >     >Category:       docs
 >     >Synopsis:       Virtualbox Host Setup needs acd0 in
 >     /etc/devfs.conf, also enable atapicam
 >     >Confidential:   no
 >     >Severity:       non-critical
 >     >Priority:       low
 >     >Responsible:    freebsd-doc
 >     >State:          open
 >     >Quarter:
 >     >Keywords:
 >     >Date-Required:
 >     >Class:          doc-bug
 >     >Submitter-Id:   current-users
 >     >Arrival-Date:   Thu Sep 05 17:30:00 UTC 2013
 >     >Closed-Date:
 >     >Last-Modified:
 >     >Originator:     Patrick Powell
 >     >Release:        8.4
 >     >Organization:
 >     Astart Technologies
 >     >Environment:
 >     FreeBSD laptop_84.private 8.4-RELEASE FreeBSD 8.4-RELEASE #0
 >     r251259: Sun Jun  2 21:26:57 UTC 2013
 >     root@bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64
 >
 >     >Description:
 >     The Wiki:
 >     https://wiki.freebsd.org/VirtualBox
 >
 >     And section 22.3.3 Virtualbox Host DVD/CD Access both indicate
 >     that /etc/devfs.conf needs:
 >
 >     perm cd* 0600
 >     perm xpt0 0660
 >     perm pass* 0660
 >
 >     However, if the CD/DVD on the host is detected as acd0 then you need:
 >
 >     link acd0    cd0
 >     perm acd* 0600
 >     perm xpt0 0660
 >     perm pass* 0660
 >
 >     Also, as noted in another PR,  you need to enable ATAPICAM.  From
 >     the Wiki:
 >
 >     Host DVD/CD access
 >
 >     atapicam kernel module needs to be loaded via /boot/loader.conf:
 >
 >     atapicam_load="YES
 >
 >
 > Are you sure this makes sense?  Using atapicam makes /dev/cd0 
 > available therefore the devfs.conf is good as is.  The atapicam 
 > reference should be there though.
 >
 >
 > -- 
 > Adam Vande More
 As I discovered,  my DVD/CD was detected as acd0, even with ATAPICAM,  
 much to my surprise.
 
 I left the other stuff in as I was not sure of the impact on other parts 
 of the VirtualBox operation.
 I discovered that VirtualBox apparently looks for cd0,  as when I did 
 not have that device it did not
 display a selection for the host drive.
 
 On another note,   a couple of other applications appear to insist on 
 /dev/cdrom,  so I have the line:
 link acd0 cdrom
 in my devfs.conf.
 
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     <div class="moz-cite-prefix">On 09/05/13 10:55, Adam Vande More
       wrote:<br>
     </div>
     <blockquote
 cite="mid:CA+tpaK3o-kxmN7L38jB8QJA_+4GN2EzUoJrtepRypEmEwEPfdw@mail.gmail.com"
       type="cite">
       <div dir="ltr">
         <div class="gmail_extra">
           <div class="gmail_quote">On Thu, Sep 5, 2013 at 12:23 PM,
             Patrick Powell <span dir="ltr">&lt;<a
                 moz-do-not-send="true" href="mailto:papowell@astart.com"
                 target="_blank">papowell@astart.com</a>&gt;</span>
             wrote:<br>
             <blockquote class="gmail_quote" style="margin:0px 0px 0px
               0.8ex;border-left:1px solid
               rgb(204,204,204);padding-left:1ex"><br>
               &gt;Number: &nbsp; &nbsp; &nbsp; &nbsp; 181845<br>
               &gt;Category: &nbsp; &nbsp; &nbsp; docs<br>
               &gt;Synopsis: &nbsp; &nbsp; &nbsp; Virtualbox Host Setup needs acd0 in
               /etc/devfs.conf, also enable atapicam<br>
               &gt;Confidential: &nbsp; no<br>
               &gt;Severity: &nbsp; &nbsp; &nbsp; non-critical<br>
               &gt;Priority: &nbsp; &nbsp; &nbsp; low<br>
               &gt;Responsible: &nbsp; &nbsp;freebsd-doc<br>
               &gt;State: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;open<br>
               &gt;Quarter:<br>
               &gt;Keywords:<br>
               &gt;Date-Required:<br>
               &gt;Class: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;doc-bug<br>
               &gt;Submitter-Id: &nbsp; current-users<br>
               &gt;Arrival-Date: &nbsp; Thu Sep 05 17:30:00 UTC 2013<br>
               &gt;Closed-Date:<br>
               &gt;Last-Modified:<br>
               &gt;Originator: &nbsp; &nbsp; Patrick Powell<br>
               &gt;Release: &nbsp; &nbsp; &nbsp; &nbsp;8.4<br>
               &gt;Organization:<br>
               Astart Technologies<br>
               &gt;Environment:<br>
               FreeBSD laptop_84.private 8.4-RELEASE FreeBSD 8.4-RELEASE
               #0 r251259: Sun Jun &nbsp;2 21:26:57 UTC 2013 &nbsp; &nbsp;
               <a class="moz-txt-link-abbreviated" href="mailto:root@bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC">root@bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC</a>
               &nbsp;amd64<br>
               <br>
               &gt;Description:<br>
               The Wiki:<br>
               <a moz-do-not-send="true"
                 href="https://wiki.freebsd.org/VirtualBox"
                 target="_blank">https://wiki.freebsd.org/VirtualBox</a><br>;
               <br>
               And section 22.3.3 Virtualbox Host DVD/CD Access both
               indicate that /etc/devfs.conf needs:<br>
               <br>
               perm cd* 0600<br>
               perm xpt0 0660<br>
               perm pass* 0660<br>
               <br>
               However, if the CD/DVD on the host is detected as acd0
               then you need:<br>
               <br>
               link acd0 &nbsp; &nbsp;cd0<br>
               perm acd* 0600<br>
               perm xpt0 0660<br>
               perm pass* 0660<br>
               <br>
               Also, as noted in another PR, &nbsp;you need to enable
               ATAPICAM. &nbsp;From the Wiki:<br>
               <br>
               Host DVD/CD access<br>
               <br>
               atapicam kernel module needs to be loaded via
               /boot/loader.conf:<br>
               <br>
               atapicam_load="YES<br>
             </blockquote>
             <div><br>
             </div>
             <div>Are you sure this makes sense?&nbsp; Using atapicam makes
               /dev/cd0 available therefore the devfs.conf is good as
               is.&nbsp; The atapicam reference should be there though.<br>
             </div>
           </div>
           <br clear="all">
           <br>
           -- <br>
           Adam Vande More
         </div>
       </div>
     </blockquote>
     As I discovered,&nbsp; my DVD/CD was detected as acd0, even with
     ATAPICAM,&nbsp; much to my surprise.<br>
     <br>
     I left the other stuff in as I was not sure of the impact on other
     parts of the VirtualBox operation.<br>
     I discovered that VirtualBox apparently looks for cd0,&nbsp; as when I
     did not have that device it did not<br>
     display a selection for the host drive.<br>
     <br>
     On another note,&nbsp;&nbsp; a couple of other applications appear to insist
     on /dev/cdrom,&nbsp; so I have the line:<br>
     link acd0 cdrom<br>
     in my devfs.conf.<br>
   </body>
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