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Re: shutdown umount hangs

To: Russell Cattelan <cattelan@xxxxxxxxxxx>
Subject: Re: shutdown umount hangs
From: Utz Lehmann <leh@xxxxxxxxxx>
Date: Fri, 30 Mar 2001 11:56:28 +0200
Cc: Eric Sandeen <sandeen@xxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <3AC38727.FC9C4FC8@thebarn.com>; from cattelan@thebarn.com on Thu, Mar 29, 2001 at 02:04:07PM -0500
References: <20010329165519.A7386@tecosim.de> <20010329170446.B7386@tecosim.de> <3AC35E8D.711963C5@sgi.com> <20010329181419.G7386@tecosim.de> <20010329182044.H7386@tecosim.de> <3AC38727.FC9C4FC8@thebarn.com>
Sender: owner-linux-xfs@xxxxxxxxxxx
User-agent: Mutt/1.2.5i
Russell Cattelan [cattelan@xxxxxxxxxxx] wrote:
> Utz Lehmann wrote:
> 
> > Utz Lehmann [leh@xxxxxxxxxx] wrote:
> > > Eric Sandeen [sandeen@xxxxxxx] wrote:
> > > > Utz Lehmann wrote:
> > > >
> > > > > > With newer cvs kernel (cvs from this week, before i had holidays) i 
> > > > > > have
> > > > > > problems with my linux workstation (suse 7.1) at work.
> > > > > >
> > > > > > Umounting the filesystems while shutdown hangs.
> > > >
> > > > Are there any errors related to unmount in the syslog?
> > >
> > > No, but syslogd was killed before umounting.
> > > There were no messages on console, it just hangs. sysreq works.
> >
> > btw: is there a way to trap it into the kdb?
> 
> You should still be able to drop into kdb, a back trace would be really 
> helpful if
> you can get it.

ok, here it is:

Unmounting file systems
shmfs umounted
/dev/sda2 umounted
/dev/vg00/tmp umounted
/dev/vg00/opt umounted

[wait some time]

Entering kdb (current=0xc035a000, pid 0) due to Keyboard Entry
kdb> bt
    EBP       EIP         Function(args)
0x0008e000 0xc0107193 default_idle+0x23
                               kernel .text 0xc0100000 0xc0107170 0xc01071a0
           0xc01071f8 cpu_idle+0x38
                               kernel .text 0xc0100000 0xc01071c0 0xc0107210
           0xc035c9ba start_kernel+0x13a
                               kernel .text.init 0xc035c000 0xc035c880 
0xc035c9c0
kdb> go

[wait some time]

Entering kdb (current=0xc035a000, pid 0) due to Keyboard Entry
kdb> bt
    EBP       EIP         Function(args)
0x0008e000 0xc0107193 default_idle+0x23
                               kernel .text 0xc0100000 0xc0107170 0xc01071a0
           0xc01071f8 cpu_idle+0x38
                               kernel .text 0xc0100000 0xc01071c0 0xc0107210
           0xc035c9ba start_kernel+0x13a
                               kernel .text.init 0xc035c000 0xc035c880 
0xc035c9c0
kdb> reboot



a working shutdown looks like this (with a cvs kernel from march 2th):

Unmounting file systems
shmfs umounted
/dev/sda2 umounted
/dev/vg00/tmp umounted
/dev/vg00/opt umounted
/dev/vg00/var umounted
/dev/vg00/usr umounted
devpts umounted
/dev/sda1 umounted                                                    done
proc umounted
vgchange -- volume group "vg00" successfully deactivated

Please stand by while rebooting the system...
stopping all md devices.
Restarting system.


btw: i test it without the kio,logbufs=4,logbsize=32768 mount option, it
hangs also.


utz

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