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Mounting using hostname instead of IP address can solve some of errors reported in this page
 
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  [[mount -t nfs]] -o proto=tcp,port=2049 REMOTE_IP_SERVER:/REMOTE_SHARE_DIR /YOUR/LOCAL_DIR/
 
  [[mount -t nfs]] -o proto=tcp,port=2049 REMOTE_IP_SERVER:/REMOTE_SHARE_DIR /YOUR/LOCAL_DIR/
 
   
 
   
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  [[mount -t nfs4]] 10.10.10.2:/ ./
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  mount -t nfs4 10.10.10.2:/ ./
 
  mount: /mnt: bad option; for several filesystems (e.g. nfs, cifs) you might need a /sbin/mount.<type> helper program
 
  mount: /mnt: bad option; for several filesystems (e.g. nfs, cifs) you might need a /sbin/mount.<type> helper program
 
  (Install client: <code> apt-get install [[nfs-common]]</code>)
 
  (Install client: <code> apt-get install [[nfs-common]]</code>)
  
 
  mount.[[nfs4]]: requested NFS version or transport protocol is not supported
 
  mount.[[nfs4]]: requested NFS version or transport protocol is not supported
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  Solution: Try to mount it using hostname instead of IP
 
  Solution: Try to mount it using hostname instead of IP
  
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  Apr 22 09:28:34 your_hostname kernel: RPC: Registered named UNIX socket transport module.
 
  Apr 22 09:28:34 your_hostname kernel: RPC: Registered named UNIX socket transport module.
 
  Apr 22 09:28:34 your_hostname kernel: FS-Cache: Loaded
 
  Apr 22 09:28:34 your_hostname kernel: FS-Cache: Loaded
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== Activities ==
 
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* Read about EFS performance settings https://docs.aws.amazon.com/efs/latest/ug/performance.html#performance-tips
 
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Don't use the following mount options:
 
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* <code>[[noac]], [[actimeo]]=0, [[acregmax]]=0, [[acdirmax]]=0</code> – These options disable the attribute cache, which has a very large performance impact.
 
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* <code>[[lookupcache]]=pos, [[lookupcache]]=none</code> – These options disable the file name lookup cache, which has a very large impact on performance.
 
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* <code>[[fsc]]</code> – This option enables local file caching, but does not change NFS cache coherency, and does not reduce latencies.
 
  
 
== Related terms ==
 
== Related terms ==
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* <code>[[exportfs]]</code> List exported filesystems
 
 
* <code>[[mount]]</code>
 
* <code>[[mount]]</code>
 
* [[RPC]]
 
* [[RPC]]
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== See also ==
 
== See also ==
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* {{mount}}
 
 
* {{NFS}}
 
* {{NFS}}
  
  
 
[[Category:Computing]]
 
[[Category:Computing]]

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