NetBSD Problem Report #26983

Received: (qmail 8141 invoked by uid 605); 17 Sep 2004 11:46:48 -0000
Message-Id: <1095421602.580770.1769.nullmailer@yamt.dyndns.org>
Date: Fri, 17 Sep 2004 20:46:42 +0900
From: yamt@mwd.biglobe.ne.jp
Sender: gnats-bugs-owner@NetBSD.org
Reply-To: yamt@mwd.biglobe.ne.jp
To: gnats-bugs@gnats.NetBSD.org
Subject: no bmap locks for vnd(4)
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>Number:         26983
>Category:       kern
>Synopsis:       no bmap locks for vnd(4)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Sep 17 11:47:01 +0000 2004
>Closed-Date:    
>Last-Modified:  Fri Aug 12 21:39:00 +0000 2005
>Originator:     YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
>Release:        NetBSD 2.0G
>Organization:

>Environment:


System: NetBSD kaeru 2.0G NetBSD 2.0G (build.kaeru) #1682: Fri Sep 17 19:52:40 JST 2004 takashi@kaeru:/home/takashi/work/kernel/build.kaeru i386
Architecture: i386
Machine: i386
>Description:
	vnd(4) uses VOP_BMAP to obtain block numbers and then issue i/o.
	nothing prevents bmap change after VOP_BMAP.
>How-To-Repeat:
	code inspection.
>Fix:
	introduce VOPs for direct i/o and use them.
>Release-Note:
>Audit-Trail:
From: Chris Tribo <ctribo@dtcc.edu>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: kern/26983
Date: Fri, 12 Aug 2005 17:37:59 -0400 (EDT)

 	Is this likely the root cause for why I cannot use vnconfig to
 attach an image on an smbfs mounted file system? If I copy the image to my
 local machine it works fine, but if I try to use vnconfig on the image on
 the SMB share it comes up as all garbage.

>Unformatted:

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