export ZFS filesystem over NFS

[devros]

I currently have a zpool of a few SSDs with a few ZFS volumes on there.  I need to export one of the volumes over NFS.  The problem is that, unlike the SMB settings where you can add extra config, there is no such option for NFS.  Unassigned devices won't recognize ZFS volumes, so I can't use that.  If I use the zfs set sharenfs=on command, it will work then, but will not stay shared after a reboot or if any changes are made to any share setting.

 

My solution was to write a script that runs when the array is 1st started that echos the lines of config I need into /etc/exports and then restarts nfsd.  The problem is that whenever some config changes are made, it results in /etc/exports getting blown away, regenerated and a restart of nfsd.  

 

Any thoughts on how I could get the two extra lines I need added every time /etc/exports get regenerated?

 

TIA,

-dev

[FlamongOle]

Super old thread, but I have the same problem. I just do exactly that myself. Sometimes it drops out because of another config somewhere in Unraid. And Samba I wanna use less possible.

[vonProteus]

i created 3 scripts for this problem

one to regenerate shares from zfs

#!/bin/bash -e

zfs get sharenfs -H -o name,value,source -t filesystem | grep -v off |  grep -v "inherited from" | while IFS=$'\n' read LINE;
do
        LINE=($LINE)
        NAME=${LINE[0]}
        SHARENFS=${LINE[1]}
        echo regenerating share $NAME with $SHARENFS
        zfs set sharenfs=off $NAME
        zfs set sharenfs=$SHARENFS $NAME
done

 

second one to run on every shutdown of array to backup zfs nfs shares to $BACKUPLOCATION

#!/bin/bash -e

BACKUPLOCATION=/mnt/tank/storage/unraid/zfs-nfs/backup/

rsync --verbose --archive --human-readable --progress --partial --checksum --delete-after /etc/exports.d/ $BACKUPLOCATION

 

and last one to restore backup on every start of array

#!/bin/bash -e

BACKUPLOCATION=/mnt/tank/storage/unraid/zfs-nfs/backup/

rsync --verbose --archive --human-readable --progress --partial --checksum  $BACKUPLOCATION /etc/exports.d

exportfs -ra