un killable processes - stuck file system

[John Muir Kumph]

Forgive me if this is the wrong place to send this bug report - but
here goes:

I have a DVD-RAM with an IDE interface - currently /dev/hdc.
I foolishly ejected the disk while it was still mounted and
flipped the write protect tab - and lo!:

cat > foo.tmp failed and got stuck

In fact nothing could kill this process now listed as D.

In fact the drive now can't be mounted or unmounted.  I
did some reading and it appears that a forced mount or
lazy mount might work - but umount -f fails with:

umount2: Device or resource busy
umount: /dev/hdc: not mounted
umount: /media/cdrom: Illegal seek

I'm sure that if I reboot - all will be fine...  But
we try to avoid rebooting

Seems like:
- one shouldn't be able to eject media that's mounted
- if one does - it shouldn't take down the device
- if it does take down the device - it'd be nice to be
   able to fix it without rebooting

I'll monitor the list for any questions - but feel free to
email too and I'll post a summary of the answers.

John Muir Kumph

Output of scripts/ver_linux
Linux lurch 2.4.18-4GB #1 Wed Mar 27 13:57:05 UTC 2002 i686 unknown

Gnu C                  2.95.3
Gnu make               3.79.1
util-linux             2.11n
mount                  2.11n
modutils               2.4.12
e2fsprogs              1.26
PPP                    2.4.1
isdn4k-utils           3.1pre4
Linux C Library        x    1 root     root      1394238 Mar 23 13:34 
/lib/libc.so
.6
Dynamic linker (ldd)   2.2.5
Procps                 2.0.7
Net-tools              1.60
Kbd                    1.06
Sh-utils               2.0
Modules Loaded         vmnet vmppuser vmmon iptable_mangle iptable_nat 
ip_conntrac
k iptable_filter ip_tables nls_iso8859-1 ntfs vfat fat snd-pcm-oss 
snd-mixer-oss p
arport_pc lp parport snd-cmipci snd-pcm snd-opl3-lib snd-hwdep snd-timer 
snd-mpu40
1-uart snd-rawmidi snd-seq-device snd soundcore ipv6 isa-pnp st sg 
usb-storage joy
dev evdev input usb-uhci usbcore af_packet 8139too mii reiserfs