df -h hung and NFS mount point unable to mount.

yuvaraj.cbe · 01-01-2018, 08:15 PM

Hi All,

I need help to fix the NFS Automount issue on one Linux machine repeatedly I am getting df -h Hung and NAS NFS mount points are unable to mount.

I have restarted NFS & Autofs service multiple times & try to mount NFS mount Point but no luck.

Please provide a solution without reboot to fix this issue.

Thanks
Yuvaraj

MensaWater · 01-02-2018, 08:54 AM

You can see what it thinks is mounted by typing "cat /etc/mtab".

You can try "umount -f" to force unmount of NFS mount but that often doesn't work if the server that shared the mount isn't accessible. If it doesn't work usually "umount -l" to do a "lazy" unmount of the mount will work. After doing that do ctrl-c in the windows where you ran "df -h" then retry the "df -h" - it should now work.

yuvaraj.cbe · 01-02-2018, 06:59 PM

Quote:

Originally Posted by MensaWater

You can see what it thinks is mounted by typing "cat /etc/mtab".

You can try "umount -f" to force unmount of NFS mount but that often doesn't work if the server that shared the mount isn't accessible. If it doesn't work usually "umount -l" to do a "lazy" unmount of the mount will work. After doing that do ctrl-c in the windows where you ran "df -h" then retry the "df -h" - it should now work.

It is not working for me

When I try mount <NFS Server>:<fileystem> <mount Point> it is hung but no luck.

MensaWater · 01-03-2018, 07:52 AM

My post regarded ways to unmount so you could clear the "df -h" hang. Have you solved the hang by UNmounting?

As to mounting:
Try to remove it from automounter configuration then just do a command line mount of the filesystem to see if it works.

Check your exports file on the server that has the original mount to verify it is allowing the server you're trying to do the NFS mount on access to the filesystem.