Recommended Options for Mounting NFS Shares

[NASbox]

I have very little experience with NFS shares, so I am looking for guidance as to the best options to use on my mount statement in /etc/fstab .

I have 2 shares defined in freenas, a RO share and a RW share. I have been mounting the shares with "default" options just to get things workking, but now I am hoping to optimize my configuration.

The client system is Ubuntu derivative on a small home network, and my objectives are as follows:

1. Shares should not prevent the client system from booting/operating if FreeNAS is down
2. Minimize the chance of data corruption on FreeNAS
3. Maximizing I/O speed/performance
4. Graceful/easy recovery from error conditions

After studying the docs, my proposed changes are below - Any suggestions/guidance is much appreciated.


READ ONLY SHARE
Read Only Share /etc/fstab
freenas:/mnt/TANK/library /media/user/library nfs defaults 0 3

Output of mount | grep -i freenas on client system with default options
freenas:/mnt/TANK/share /media/user/library nfs ro,relatime,vers=3,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=x.x.x.x,mountvers=3,mountport=608,mountproto=udp,local_lock=none,addr=x.x.x.x 0 0

Proposed Read Only Share /etc/fstab
freenas:/mnt/TANK/library /media/user/library nfs ro,bg,rsize=131072,wsize=1024,soft,intr,timeo=150,retrans=3 0 0

READ/WRITE SHARE
Read/Write Share /etc/fstab
freenas:/mnt/TANK/SHARE /media/user/SHARE/ nfs noatime,defaults 0 3

Output of mount | grep -i freenas on client system with default options
freenas:/mnt/TANK/SHARE on /media/user/SHARE type nfs (rw,noatime,vers=3,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=x.x.x.x,mountvers=3,mountport=608,mountproto=udp,local_lock=none,addr=x.x.x.x)

Proposed Read/Write Share /etc/fstab
freenas:/mnt/TANK/SHARE /media/user/SHARE/ nfs rw,noatime,bg,rsize=131072,wsize=131072,hard,intr,timeo=150,retrans=3 0 0

 

[House Of Cards]

Greetings,

I have the same question. I am troubleshooting an issue with transfers hanging and freezing the client systems, and I am leaning towards an NFS mount option causing grief. I have the same needs as you, and I currently have...

192.168.1.100:/mnt/TANK/DOCS /mnt/Documents nfs rsize=8192,wsize=8192,timeo=14,intr,tcp 0 0

If I copy a large file to this, from numerous machines, this will crash and hang my systems. Never used to, but it is now.

How are your settings working?

 

[NASbox]

This is what I have been using -- don't know enough to help you more specifically than this. Hopefully someone can fill in the blanks. Haven't had any lockup problems to the best of my knowledge.

Code:

freenas.pvt:/mnt/TANK/DUMP     /media/xxxxx/DUMP/           nfs   rw,noatime,rsize=131072,wsize=131072,hard,intr,timeo=150,retrans=3    0

 

[House Of Cards]

This is what I have been using -- don't know enough to help you more specifically than this. Hopefully someone can fill in the blanks. Haven't had any lockup problems to the best of my knowledge.

Code:

freenas.pvt:/mnt/TANK/DUMP     /media/xxxxx/DUMP/           nfs   rw,noatime,rsize=131072,wsize=131072,hard,intr,timeo=150,retrans=3    0

Thanks. I’ve been trying it out on a couple shares. Seems to be working here too.