Re: kern/39400: tacking FFS snapshot triggers "lock error" panic

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR kern/39400; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/39400: tacking FFS snapshot triggers "lock error" panic
Date: Sun, 24 Aug 2008 16:50:08 +0200

 On Sun, Aug 24, 2008 at 02:25:00PM +0000, Manuel Bouyer wrote:
 > >Number:         39400
 > >Category:       kern
 > >Synopsis:       tacking FFS snapshot triggers "lock error" panic
 > >Confidential:   no
 > >Severity:       serious
 > >Priority:       high
 > >Responsible:    kern-bug-people
 > >State:          open
 > >Class:          sw-bug
 > >Submitter-Id:   net
 > >Arrival-Date:   Sun Aug 24 14:25:00 +0000 2008
 > >Originator:     Manuel Bouyer
 > >Release:        NetBSD 4.99.72
 > >Organization:
 > >Environment:
 > System: NetBSD  4.99.72 NetBSD 4.99.72 (XEN3_DOMU) #98: Sun Aug 24 15:29:54 
 > CEST 2008  
 > bouyer@rock:/dsk/l1/misc/bouyer/tmp/amd64/obj/dsk/l1/misc/bouyer/current/src/sys/arch/amd64/compile/XEN3_DOMU
 >  amd64
 > Architecture: amd64
 > Machine: amd64
 > >Description:
 >      taking an internal shapshot twice of the same filesystem
 >      triggers a lock error panic:
 
 It also seems that tacking a snapshot only once, and then rebooting
 cause the kernel to hang trying to unmount the filesystem on which the
 snapshot was tacken:
        dump -a -f /dev/null -X /
        reboot
 
 will hang trying to umount /
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --