Dave Burns wrote:
On Tue, Feb 2, 2016 at 9:23 AM, m.roth@5-cent.us wrote:
Dave Burns wrote:
My NFS server is up and other clients can access x. One particular
client
can't. I tried to unmount the NFS share:
[root@nfsclient ~]# umount -f /disk/x umount2: Device or resource busy umount.nfs: /disk/x: device is busy umount2: Device or resource busy umount.nfs: /disk/x: device is busy
If I use df or lsof to try to figure out what process to kill, they hang.I am reluctant to just reboot, as many other users are getting stuff done. dmesg doesn't show anything useful.
How to get unstuck?
*IF* I understand what you're saying, on that one client, you're trying to umount the nfs share. Is that the case?
IF that is the case... is autofs running? If so, service autofs stop, and you should be able to umount it.
# service autofs stop results in fail. Maybe need #rm /var/run/autofs.pid?
Ok, ps -ef | grep auto, and see if it's running; or are you saying it *said* shutting it down failed? Oh, and is this CentOS 6 or 6 (service, or systemctl)?
If it's already shut off, and lsof doesn't help, does doing a df help? Perhaps it might show someone's workspace, or home directory mounted, so you know who to kill?
mark