[Level 3] Clone ZFS Permissions

One day, someone ask me how to clone ZFS permissions from one ZFS file system to another ZFS file system.
It seems that zfs command doesnot support the permission like getfacl setfacl to clone the file system permissions.
Therefore I try to write a script to implement that,
please refer to the following code.

#!/usr/bin/bash
showUsage() {
  cat <<EOF
Usage:
  $0 source_zfs target_zfs
Ex.
  $0 rpool/fs1 karajon/fs2
EOF
}

##################################### main

sSZFS=$1
sTZFS=$2
declare -i fPermSet=0
declare -i fLocalPerm=0

zfs allow $sSZFS | while read s
do
  ( echo $s | grep "^---- Permissions on " > /dev/null ) && continue
  ( echo $s | grep "^Permission sets:$" > /dev/null ) && fPermSet=1 && fLocalPerm=0 && continue
  ( echo $s | grep "^Local+Descendent permissions:$" > /dev/null ) && fLocalPerm=1 && fPermSet=0 && continue
  if [ $fPermSet -eq 1 ]
  then
    echo "zfs allow -s $s $sTZFS"

    zfs allow -s $s $sTZFS

  elif [ $fLocalPerm -eq 1 ]
  then
    echo "zfs allow -u ${s#user } $sTZFS"

    zfs allow -u ${s#user } $sTZFS

  fi
done



Wish this helps.

regards,
Stanley Huang

Comments

Post a Comment

Popular posts from this blog

[Level 2] Shell Interactive With Zenity Episode 5 -- list

Image
If you want to give a list for user to choose, you can use the option "--list". The command synopsis as below: SYNOPSIS      zenity  --list [--title=title] [--window-icon=path] [--width=width]    [--height=height] [--timeout=seconds] [--column=text] [--checklist]       [--radiolist] [--separator=character] [--multiple] [--editable] [--print-column=number] [--hide-column=number] Just like " --calendar ", if you press "ESC" key or click button "Cancel", the return code will be "1". If you select one option and click "OK", zenity will response the option and return the code will be "0". And also the same effect about the options "--title", "--timeout"...etc, for saving your time, please refer to the previous post " [Level 2] Shell Interactive With Zenity Episode 1 -- calendar ", too. About "--multiple" and "--separator", please refer to tht previous post " [Lev...
Read more

[Level 2] iif in Python

If you want to implement iif in Python, please refer to the following sample code: #!/bin/env python def iif(b): return 'It\'s True' if b else 'It\'s False' print iif(True) print iif(False) And the following sample, guess what will you get! #!/bin/env python b = True print 'b: %s' % 'Ture' if b else 'False' b = False print 'b: %s' % 'Ture' if b else 'False' Result: $ ./iif.py b: Ture False The second result is "False", not "b: False". Why??? Because the prededence of string concatenation is higher than if. Therefore you need to use () to make it correct. #!/bin/env python b = True print 'b: %s' % 'Ture' if b else 'False' b = False print 'b: %s' % ('Ture' if b else 'False') Wish this helps. regards, Stanley Huang
Read more