NFS woes

From: Chad Schwartz (cwslist@main.cornernet.com)
Date: Sat Jun 03 2000 - 00:30:26 EST


Kernel NFS.

2.4.0-test1-ac7 (or plain test1, for that matter.)

add rule to /etc/exports to allow permissions to any currently mounted FS,
and start kernel nfs. (Debian packaging, in this case..
/etc/init.d/nfs-kernel-server start.)

mount that FS from the remote system you just added the export rule for.

Unmount that FS from the remote system.

remove the rule from /etc/exports.

rerun exportfs -r.

try to unmount the FS on the NFS server, that was the FS that was
exported.

Can't unmount the directory. Device busy.

fuser -v shows:

/mp31 root kernel mount /fs1

Being held open by the kernel, but nothings attached to it in userspace.

/etc/init.d/nfs-kernel-server stop

(does all the stuff to unload the nfsd's, mountd, etc...)

Even though all the daemons are dead, and NFS is no longer running...

The filesystem is *STILL* being held busy by the kernel mount generated by
adding the export rule.

Any suggestions?

 Chad

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