Solved

can't umount nfs share after server goes offline...

Posted on 2016-08-16
4
113 Views
Last Modified: 2016-08-20
df will not run.... I can't umount the share.  Do I have to either bring the server side up to get this fixed?  What if I couldn't bring the server side up?  Would I have to reboot client to get the mount unmounted and df working?
0
Comment
Question by:Xetroximyn
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 
LVL 68

Accepted Solution

by:
woolmilkporc earned 251 total points
ID: 41758163
Did you try

umount -l /mount/point

or

umount -f /mount/point

?

If you did and it wasn't successful and if you really can't bring up the server then I fear rebooting the client is your only option to get rid of the stale mount.
0
 
LVL 35

Assisted Solution

by:Dan Craciun
Dan Craciun earned 83 total points
ID: 41758428
Right now, reboot is your only option.

If you don't want to get in the same situation again, you could either use autofs or a soft mount.

HTH,
Dan
0
 
LVL 10

Assisted Solution

by:Carlos Ijalba
Carlos Ijalba earned 83 total points
ID: 41761121
Try restarting the NFS client:

rcnfsserver restart 

Open in new window

(this is for Suse, but you can search the command for your particular distro)

If it is a NFSv4 mount, try with:

umount.nfs4 /mountpoint -l

Open in new window


If that doesn't unmount it, try to find if there are any open files on the mountpoint with fuser, or just plan a system reboot out of hours to correct it.
0
 
LVL 16

Assisted Solution

by:Hanno P.S.
Hanno P.S. earned 83 total points
ID: 41762267
The standard hard mount is designed to wait for the server to come back up again.
If you use soft mounts it will possible to unmount.
Sometimes you can forceably unmount (umount -f ...) or try to restart the NFS client on your machine. Be aware that this can hang forever while trying to unmount (do it in an extra window or in background).
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Cloud file services can fill many different roles for your business. Often, the use of cloud file services begins with employees using consumer products, like Dropbox, to share files with customers and each other. While sync-and-share can be an effe…
Many of the companies I’ve worked with have embraced cloud solutions due to their desire to “get out of the datacenter business.” The ability to achieve better security and availability, and the speed with which they are able to deploy, is far grea…
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…
Suggested Courses

627 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question