From nobody  Sat Nov  8 01:33:02 1997
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Date: Sat, 8 Nov 1997 01:33:02 -0800 (PST)
From: toasty@dragondata.com
To: freebsd-gnats-submit@freebsd.org
Subject: quotaon while server very busy causes lockup/reboot
X-Send-Pr-Version: www-1.0

>Number:         4975
>Category:       bin
>Synopsis:       quotaon while server very busy causes lockup/reboot
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Nov  8 01:40:01 PST 1997
>Closed-Date:    Sun Jun 02 04:32:21 PDT 2002
>Last-Modified:  Sun Jun 02 04:32:21 PDT 2002
>Originator:     Kevin Day
>Release:        2.2.1-RELEASE
>Organization:
DragonData
>Environment:
FreeBSD home.dragondata.com 2.2.1-RELEASE FreeBSD 2.2.1-RELEASE #0: Thu Sep 25 0
0:27:55 CDT 1997     toasty@home.dragondata.com:/usr/src/sys/compile/HOME  i386
>Description:
I did a 'quotaoff -a', then a bit later 'quotaon -a'. The server was doing something pretty big(disk wise) at the time.
The machine ran for about 2 seconds, then locked up. I don't have a monitor on the server, so I can't tell if it displayed any errors after it locked up.
>How-To-Repeat:
I was able to reproduce it several times by getting analog to process a
very very large log file, then type 'quotaoff -a ; quotaon -a'.
>Fix:

>Release-Note:
>Audit-Trail:

From: gene@cif.rochester.edu
To: freebsd-gnats-submit@freebsd.org, toasty@dragondata.com
Cc:  Subject: Re:bin/4975:quotaonwhileserververybusycauseslockup/reboot
Date: Sat, 14 Mar 1998 17:44:05 -0500 (EST)

 I would like to bring this pr once again to the attention of the freebsd-bugs
 readers.  I have been able to produce this behaviour under low load at
 seemingly random times under FreeBSD 2.2.5-RELEASE.  Twice within about six
 hours quotaon -a hung the system.  I believe this pr should be upgraded
 to a priority of medium or critical as I am currently running a prduction
 system with quotas off because I cannot afford the crashes.
 
 However, I do have good news in this gloom and doom.  That is that I was
 able to get kernel backtraces of the system each time it was in a crash state.
 Both times, the kernel packed "page fault in kernel address space" (or similar)
 in the dqget() function.  That may be of some help in finding the problem.
 I'm thinking it is a dma concurrency issue possibly or a race condition that
 may have its real origins in the vfs, but I'm neither an i386 junky nor
 a person familiar with the new FreeBSD vfs, so I can't go bug-hunting.
 
 If someone eneds some other informaiton on this, please feel free to contact
 me.
 
 Gene
 
State-Changed-From-To: open->feedback 
State-Changed-By: iedowse 
State-Changed-When: Sat Jan 19 13:36:18 PST 2002 
State-Changed-Why:  

Does this problem still occur? 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=4975 

From: Ian Dowse <iedowse@maths.tcd.ie>
To: freebsd-gnats-submit@freebsd.org
Cc:  
Subject: Re: bin/4975: quotaon while server very busy causes lockup/reboot 
Date: Sat, 19 Jan 2002 23:12:31 +0000

 Adding to the audit trail:
 
 In message <200201192318.g0JNIA157790@temphost.dragondata.com>, Kevin Day write
 s:
 >> 
 >> Synopsis: quotaon while server very busy causes lockup/reboot
 >> 
 >> State-Changed-From-To: open->feedback
 >> State-Changed-By: iedowse
 >> State-Changed-When: Sat Jan 19 13:36:18 PST 2002
 >> State-Changed-Why: 
 >> 
 >> Does this problem still occur?
 >> 
 >> http://www.FreeBSD.org/cgi/query-pr.cgi?pr=4975
 >> 
 >
 >
 >I'm afraid I no longer have the environment to test this. Since it was a
 >production environment, I never really experimented with reproducing it with
 >later versions, and now the entire setup is gone.
 >
 >So, my answer is "I don't know".
 >
 >-- Kevin
State-Changed-From-To: feedback->closed 
State-Changed-By: iedowse 
State-Changed-When: Sun Jun 2 04:31:09 PDT 2002 
State-Changed-Why:  

Submitter no longer has the configuration with which this problem 
occurred. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=4975 
>Unformatted:
