I was working quite a bit yesterday with external drives and a couple got uncleanly dismounted. I noticed an error in my backup log this morning that turned out to be a defunct mount point in /Volumes.

But I can't get rid of it. Normally I'd just rm -d it or even trash it from Finder, but this one doesn't want to go away.

Code:
apple:/Volumes nfisher $ ls
MBP		Service Data 1

apple:/Volumes nfisher $ ls -la
ls: Service Data 1: Device not configured
total 8
drwxrwxrwt@  4 root  admin   136 Dec 23 16:29 .
drwxrwxr-x@ 88 root  admin  3060 Dec 23 12:36 ..
lrwxr-xr-x   1 root  admin     1 Dec 14 19:29 MBP -> /

apple:/Volumes nfisher $ rm -d Service\ Data\ 1
rm: Service Data 1: Device not configured

apple:/Volumes nfisher $ cd /dev

apple:/dev nfisher $ ls -la | grep disk
brw-r-----   1 root     operator   14,   0 Dec 14 19:28 disk0
brw-r-----   1 root     operator   14,   1 Dec 14 19:28 disk0s1
brw-r-----   1 root     operator   14,   2 Dec 14 19:28 disk0s2
brw-r-----   1 nfisher  operator   14,   6 Dec 23 14:25 disk1s3
crw-r-----   1 root     operator   14,   0 Dec 14 19:28 rdisk0
crw-r-----   1 root     operator   14,   1 Dec 14 19:28 rdisk0s1
crw-r-----   1 root     operator   14,   2 Dec 14 19:28 rdisk0s2
crw-r-----   1 nfisher  operator   14,   6 Dec 23 14:25 rdisk1s3

apple:/dev nfisher $ disktool -u /Volumes/Service\ Data\ 1 
/Volumes/Service Data 1 device will be unmounted ...
***Notifications Complete for type 1
***Responding yes to unmount - disk1s3
***Disk NOT Unmounted('disk1s3'), errorCode(16), dissenter(-1)
*** Call Failed  disk1s3, 1, 16 ***

apple:/dev nfisher $ disktool -u rdisk1s3
rdisk1s3 device will be unmounted ...
***Notifications Complete for type 1
^C
(hangs)

apple:/dev nfisher $ umount /Volumes/Service\ Data\ 1 
umount: unmount(/Volumes/Service Data 1): Device not configured

apple:/dev nfisher $ hdiutil eject /Volumes/Service\ Data\ 1 
hdiutil: eject failed - Device not configured


So, am I rebooting to fix this? I don't like to surrender to things like this... it does not show up in disk utility

I work for the Department of Redundancy Department