From owner-freebsd-bugs  Mon Sep 18  5:40: 4 2000
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Date: Mon, 18 Sep 2000 05:34:56 -0700 (PDT)
From: jason-freebsd-bugs@idealab.com
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Subject: misc/21354: FreeBSD4.1 + SMP + vinum = crashes
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>Number:         21354
>Category:       misc
>Synopsis:       FreeBSD4.1 + SMP + vinum = crashes
>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:   Mon Sep 18 05:40:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Jason Stone
>Release:        4.1-RELEASE
>Organization:
idealab!
>Environment:
FreeBSD hermione.pas.lab 4.1-RELEASE FreeBSD 4.1-RELEASE #2: Sat Sep  2 04:45:37 PDT 2000     root@hermione.pas.lab:/usr/src/sys/compile/JKERN  i386
>Description:
I'm running FreeBSD 4.1-RELEASE and a kernel compiled with SMP support.
I'm also using vinum - I have four IDE disks on two Promise UDMA66 IDE
cards in a Raid-5 array.  When rsync'ing /usr to the raid array, the
machine consistently locks up and reboots.  When I boot a non-SMP
(but otherwise identical) kernel, the problem goes away.

>How-To-Repeat:
The problem is seen with any large transfer (or many small transfers)
to a vinum raid5 array of IDE disks under an SMP kernel.

>Fix:
Disabling SMP seems to fix the problem.


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


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