NetBSD Problem Report #13563

Received: (qmail 13561 invoked from network); 26 Jul 2001 14:33:49 -0000
Message-Id: <29757-996158251@rainier>
Date: Thu, 26 Jul 2001 07:37:28 -0700
From: reed@reedmedia.net
Reply-To: reed@reedmedia.net
To: gnats-bugs@gnats.netbsd.org
Subject: rndctl shows no stats for cd0
X-Send-Pr-Version: 3.95

>Number:         13563
>Category:       kern
>Synopsis:       rndctl -l shows 0 bits for cd0
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jul 26 14:34:01 +0000 2001
>Closed-Date:    
>Last-Modified:  Mon Apr 07 19:29:29 +0000 2003
>Originator:     Jeremy C. Reed
>Release:        not current; 1.5.1_BETA i386
>Organization:

>Environment:

System: NetBSD rainier 1.5.1_BETA NetBSD 1.5.1_BETA (JCR-1.5-20010407) #0: Sat Apr 7 01:44:35 PDT 2001 reed@rainier:/usr/src/sys/arch/i386/compile/JCR-1.5-20010407 i386


>Description:
I noticed on July 19, that rndctl didn't show any bits for my cd0 disk
even though I listen to music on it. Then today I mount_cd9660 a CD and
browsed and looked at a few files on it.
$ rndctl -l
Source                 Bits Type      Flags
fd0                    1792 disk estimate, collect
pckbd0               910881 tty  estimate, collect
ne0                  618339 net  estimate, collect
cd0                       0 disk estimate, collect
wd0                 3743438 disk estimate, collect
>How-To-Repeat:
make sure collection is enabled and entropy estimation is enabled for cd0;
use xcdplayer to listen to audio cds; mount data CDs and look at data;
use "rndctl -l" to see cd0.
>Fix:

>Release-Note:
>Audit-Trail:

From: "Jeremy C. Reed" <reed@reedmedia.net>
To: gnats-bugs@netbsd.org
Cc:  
Subject: Re: kern/13563: rndctl shows no stats for cd0
Date: Thu, 26 Jul 2001 16:42:54 -0700 (PDT)

 G. McGarry told me that reading a few files doesn't generate enough
 entropy. So I did a find on the whole CD (as he suggested) and it worked.
 Thank you Gregory.

 cd0                    1152 disk estimate, collect

 This PR can be closed once this is clearly explained in the rndctl(8) or
 rnd(4) manual page. For example, rndctl(8) reports "Bits", but I don't see
 an easy to understand reference to this. Also, it should say that certain
 amount of entropy collection is needed before the "Bits" changes; i.e.
 reading a few files will not generate enough entropy. I am not sure how
 this should be worded. And also it is unclear what "estimation" means.

    Jeremy C. Reed
    http://www.reedmedia.net/




State-Changed-From-To: open->feedback 
State-Changed-By: bouyer 
State-Changed-When: Mon Apr 7 10:08:33 PDT 2003 
State-Changed-Why:  
Hi,m 
do you still have this problem ? On a 1.6 system, it seems to work as exected 
State-Changed-From-To: feedback->open 
State-Changed-By: bouyer 
State-Changed-When: Mon Apr 7 12:29:03 PDT 2003 
State-Changed-Why:  
OK, this is a documentation problem. 
>Unformatted:

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