Description of problem: Automount of NFS4 export, when expires and unmounts, attempts to unmount the mount with NFS3 or other strange behavior. This did not happen on older autofs versions and does not happen with a manual mount and unmount of the exact same options. the end result is a lot of: Aug 30 17:52:45 blue mountd[2535]: refused unmount request from red for / (/): not exported in blue's logs Version-Release number of selected component (if applicable): 5.0.1-25 How reproducible: - Have a NFS4 server with a root export - automount map on client is simply: * -fstype=nfs4,rw &:/ Steps to Reproduce: 1. Set up /nfs4/blue (on red) to be an NFS4 automount to blue:/ 2. use the above mount, and wait for it to expire 3. notice: Actual results: System silently unmounts NFS4 mount Expected results: Aug 30 17:52:45 blue mountd[2535]: refused unmount request from red for / (/): not exported Additional info:
FYI: still does it on -26
I'm a little unsure of what you mean here. If /etc/exprots on <server> contains: /export2 (rw,fsid=0,subtree_check) and I do: mount -t nfs4 <server>:/ /mnt/tmp The nfs4 export /expeot2 is mounted as <server>:/ on /mnt/tmp as it should be. If I then do umount /mnt/tmp the export is umounted as it should be. Can you help me by explaining what the problem is? Ian
(In reply to comment #0) > > the end result is a lot of: > Aug 30 17:52:45 blue mountd[2535]: refused unmount request from red for / (/): > not exported OK, I see these on my server. > > Actual results: > System silently unmounts NFS4 mount OK, as it should. > > Expected results: > Aug 30 17:52:45 blue mountd[2535]: refused unmount request from red for / (/): > not exported And we get those on the server for manual or automounted umounts and you say that's expected? Ian
Crap, my expected and actual results were swapped. We expect a clean unmount but we get that warning on the server. If I make a manual mount and unmount it, I don't get the error in the server logs, but when I use the automount I do get the error. I run a cron job every 5 minutes that ends up mounting that mount (because I'm sane, honest), so every 5 minutes plus 90 seconds give or take, I get that error message in the server's log.
The messages on the server start _exactly_ when I rebooted into autofs -23 on the client machine. I am able to force this behavior in a manual sense by doing: mount -t nfs4 blue:/ /tmp/blue umount -t nfs /tmp/blue then immediately, this gets logged: Aug 30 23:11:01 blue mountd[2535]: refused unmount request from red for / (/): not exported
then twenty seconds later I realize that: mount -t nfs4 blue:/ /tmp/blue umount -t nfs4 /tmp/blue also does it. so the problem is with mount.nfs. sorry to bother!