Red Hat Bugzilla – Bug 59037
showmount <host> displays hosts that are no longer using exports
Last modified: 2005-10-31 17:00:50 EST
Description of Problem: showmount returns the hostname for a client that no longer has the exported directory mounted. from /var/log/messages: Jan 29 14:00:55 iccthedral rpc.mountd: authenticated unmount request from 172.16.47.172:886 for /opt/mp3 (/opt/mp3) Jan 29 14:01:00 iccthedral rpc.mountd: dump request from 172.16.45.101 Jan 29 14:01:12 iccthedral rpc.mountd: dump request from 172.16.45.101 yet... [benl@iccthedral benl]$ showmount Hosts on iccthedral.meridian.redhat.com: dhcpd172.meridian.redhat.com (dhcpd172 has address 172.16.47.172) checking the mounted filesystems on dhcpd172 confirms that it has indeed umounted the exported filesystem from the server in question. Version-Release number of selected component (if applicable): nfs-utils-0.3.1-13.7.2.1
Which kernel is this?
kernel-2.4.9-21
Showmount consults the file /var/lib/nfs/rmtab to determine which clients are mounting partitions from the server. It looks like this file has become corrupted. /var/lib/nfs/rmtab is supposed to be updated whenever a mount/umount request takes place, but can become corrupted if the client has a partition mounted from the server and reboots without explicitly unmounting it. Try clearing out the rmtab file, and let me know if the problem reoccurs.
OK. I must not have unmounted the filesystem before shutting down... I'm closing as NOTABUG since I can't reproduce this using the steps you provide above. /var/lib/nfs/rmtab is updated as expected when the 'unmount' command is issued on the client. showmount *does* reflect this. kernel-2.4.9-26beta.28 nfs-utils-0.3.1-13.7.2.4