$ mount
precision:/nfsserver on /nfsclient type nfs (rw,bg,addr=127.0.0.2)
$ grep nfsclient /proc/mounts
precision:/nfsserver /nfsclient nfs rw,vers=3,rsize=32768,wsize=32768,hard,proto=tcp,timeo=600,retrans=2,sec=sys,addr=precision 0 0

6 thoughts on “Check mount option in linux”

1. Bogdan June 18, 2012 at 14:56

   You can check /etc/mtab…should list your options.
   Bogdan
2. Laurent Schneider Post authorJune 18, 2012 at 15:09

   Unfortunately no… this is what “mount” is doing
   

   
   $ mount | grep nfsclient
   precision:/nfsserver on /nfsclient type nfs (rw,bg,addr=127.0.0.2)
   $ grep nfsclient /etc/mtab
   precision:/nfsserver /nfsclient nfs rw,bg,addr=127.0.0.2 0 0
   $ grep nfsclient /proc/mounts
   precision:/nfsserver /nfsclient nfs rw,vers=3,rsize=32768,wsize=32768,hard,proto=tcp,timeo=600,retrans=2,sec=sys,addr=precision 0 0
   
3. Maxim June 18, 2012 at 15:26

   Can’t verify it at the moment, but specifically for nfs mounts the showmount (man SHOWMOUNT(8)) should do it.

   Best regards

   Maxim
4. Maxim June 18, 2012 at 15:38

   please ignore my previous comment (what i meant – the content of /etc/exports – is not what you was talking about)

   Best regards

   Maxim
5. Laurent Schneider Post authorJune 18, 2012 at 16:05

   Even that does not show all :
   

   
   $ /usr/sbin/showmount -e precision
   Export list for precision:
   /nfsserver *
   $ grep nfsserver /etc/exports
   /nfsserver *(rw,sync,no_wdelay,insecure_locks,no_root_squash)
   

   but indeed it is not related to the mount options

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