From mharo-freebsd@haro.us  Tue Dec 18 05:17:11 2007
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Date: Mon, 17 Dec 2007 20:51:41 -0800
From: "Michael Haro" <mharo@freebsd.org>
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To: FreeBSD-gnats-submit@freebsd.org
In-Reply-To: <200712072059.lB7KxGoP001298@zfsserver.mtv.bitsurf.net>
Subject: Re: zfs related kernel panic on RELENG_7 (7.0BETA4): kmem_malloc(XXX): kmem_map too small
References: <200712072059.lB7KxGoP001298@zfsserver.mtv.bitsurf.net>

>Number:         118806
>Category:       kern
>Synopsis:       Re: zfs related kernel panic on RELENG_7 (7.0BETA4): kmem_malloc(XXX): kmem_map too small
>Confidential:   yes
>Severity:       serious
>Priority:       medium
>Responsible:    pjd
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Dec 18 05:20:01 UTC 2007
>Closed-Date:    Tue Dec 18 08:19:53 UTC 2007
>Last-Modified:  Tue Dec 18 08:19:53 UTC 2007
>Originator:     
>Release:        
>Organization:
>Environment:
>Description:
 I found that setting
 vfs.zfs.arc_max="150M"
 and
 vfs.zfs.prefetch_disable="1"
 have resulted in the mv succeeding w/o a kernel panic.  I assume changing
 the arc max fixed the immediate problem.  Maybe it should autotune a little
 better?
 
 Also, while doing the mv I noticed that sysctl showed the following:
 kstat.zfs.misc.arcstats.c_max: 157286400
 kstat.zfs.misc.arcstats.size:  157556224
 
 Is arcstats.size supposed to be larger than arcstats.c_max?
 
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: linimon 
State-Changed-When: Tue Dec 18 08:18:37 UTC 2007 
State-Changed-Why:  
Misfiled followup to kern/118487; content migrated. 


Responsible-Changed-From-To: gnats-admin->pjd 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Tue Dec 18 08:18:37 UTC 2007 
Responsible-Changed-Why:  

http://www.freebsd.org/cgi/query-pr.cgi?pr=118806 
>Unformatted:
