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Date: Fri, 10 Nov 2006 21:09:03 GMT
From: trasz<trasz@pin.if.uz.zgora.lp>
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Cc: 
Subject: kern/105390: filesystem on a md backed by sparse file with
	softupdates enabled leads to wdrain livelock.
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>Number:         105390
>Category:       kern
>Synopsis:       filesystem on a md backed by sparse file with softupdates enabled leads to wdrain livelock.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Nov 10 21:10:36 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     trasz
>Release:        6.2-pre
>Organization:
>Environment:
FreeBSD traszkan.ds7 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #1: Mon Oct 30 07:41:21 CET 2006     trasz@traszkan.ds7:/usr/obj/usr/src/sys/TRASHCAN  i386
>Description:
Take a filesystem low on free space.  Create big sparse file, 'mdconfig -af' it, create
geli on it, mount and start moving files from the 'outer' filesystem (the one on which sparse file is created) to the 'inner' (encrypted with eli) one.  If outer one has softupdates enabled, move will soon stop on 'wdrain'.  Disabling softupdates makes the problem dissappear.

>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: