NetBSD Problem Report #18488

Received: (qmail 8283 invoked by uid 605); 1 Oct 2002 12:31:51 -0000
Message-Id: <200210011231.g91CVBM17491@mofo.grunta.com>
Date: Tue, 1 Oct 2002 22:31:11 +1000 (EST)
From: grant@netbsd.org
Sender: gnats-bugs-owner@netbsd.org
To: gnats-bugs@gnats.netbsd.org
Subject: cannot unmount a CD-RW after erasing it
X-Send-Pr-Version: 3.95

>Number:         18488
>Category:       kern
>Synopsis:       cannot unmount a CD-RW after erasing it
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 01 12:32:00 +0000 2002
>Closed-Date:    
>Last-Modified:  Tue Oct 01 13:46:01 +0000 2002
>Originator:     grant beattie
>Release:        NetBSD 1.6I
>Organization:
>Environment:
System: NetBSD mofo 1.6I NetBSD 1.6I (GENERIC) #0: Sat Sep 28 14:58:16 EST 2002 root@mofo:/raid0/netbsd/current/20020928/i386/obj/sys/arch/i386/compile/GENERIC i386
Architecture: i386
Machine: i386
>Description:
After erasing a CD-RW, it is impossible to unmount it. Obviously I did
not realise it was mounted at the time :) but was couldn't unmount it
and was forced to reboot.

>How-To-Repeat:
# mount /dev/cd0a /cdrom
# cdrecord blank=fast
[...]
# umount /dev/cd0a
umount: /cdrom: invalid argument

>Fix:
There really should be a way to force unmount a file system.

>Release-Note:
>Audit-Trail:

From: Lubomir Sedlacik <salo@Xtrmntr.org>
To: grant@netbsd.org
Cc: gnats-bugs@gnats.netbsd.org
Subject: Re: kern/18488: cannot unmount a CD-RW after erasing it
Date: Tue, 1 Oct 2002 15:32:08 +0200

 On Tue, Oct 01, 2002 at 10:31:11PM +1000, grant@netbsd.org wrote:
 > >Description:
 > After erasing a CD-RW, it is impossible to unmount it. Obviously I did
 > not realise it was mounted at the time :) but was couldn't unmount it
 > and was forced to reboot.
 > 
 > >How-To-Repeat:
 > # mount /dev/cd0a /cdrom
 > # cdrecord blank=fast
 > [...]
 > # umount /dev/cd0a
 > umount: /cdrom: invalid argument
 > 
 > >Fix:
 > There really should be a way to force unmount a file system.

 did you try -f?

 umount(8)

   -f    The filesystem is forcibly unmounted.  Active special devices
         continue to work, but all other files return errors if further
         accesses are attempted.  The root filesystem cannot be forcibly
         unmounted.


 regards,

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From: grant@netbsd.org
To: Lubomir Sedlacik <salo@Xtrmntr.org>
Cc: grant@netbsd.org, gnats-bugs@gnats.netbsd.org
Subject: Re: kern/18488: cannot unmount a CD-RW after erasing it
Date: Tue, 1 Oct 2002 23:50:56 +1000

 On Tue, Oct 01, 2002 at 03:32:08PM +0200, Lubomir Sedlacik wrote:

 > did you try -f?

 yes, the result was the same. sorry, I should meant to mention this :)

>Unformatted:

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