[CentOS] nfs stuck, don't know what processes to kill

[Tnjulius]

umount -fl /mount/point 
And configure it after with autofs 

Sent from my iPhone

> On Feb 2, 2016, at 20:00, Phelps, Matthew <mphelps at cfa.harvard.edu> wrote:
> 
> Try "umount -fl"            ('eff el')
> 
>> On Tue, Feb 2, 2016 at 1:58 PM, Dave Burns <tburns at hawaii.edu> 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 at 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?
>> 
>> thanks,
>> Dave
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>> https://lists.centos.org/mailman/listinfo/centos
> 
> 
> 
> -- 
> Matt Phelps
> System Administrator, Computation Facility
> Harvard - Smithsonian Center for Astrophysics
> mphelps at cfa.harvard.edu, http://www.cfa.harvard.edu
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