Re: 1.99.10: can't umount nfs/CD-ROM

Alan Cox (alan@cymru.net)
Tue, 4 Jun 1996 09:38:01 +0100 (BST)


> no problems. But if I mount a CDROM locally (and export it), then NFS
> mount it from another machine on my LAN, access it, and try to umount it,
> I may or may not be able to. I get: device busy

Correct. The NFS daemon still has it open for a while. The current nfsd
closes any such handles after about 30 seconds or so.

Its because NFS doesnt have clear open/close/read/write semantics
client<->server.

Killing and restarting nfsd should also allow you to unmount the disk

Alan