packages-import.bsh

#!/bin/bash

#DESCRIPTION
#import a zfs file system with historical MRAN snapshots to a zpool
#run this script or commands on your MRAN server candidate

#SETUP - change these variables as needed
MASTER_URL="mran.revolutionanalytics.com" #change to your server URL if not pointing to Revo master
RSYNC_MODULE="MRAN-exports" #-------------#only change if not using Revo master
ARCHIVE="mran-2014-6-30_517pm.zfs" #------#use the latest replication stream from Revo master
TMP_DESTINATION="/tmp" #------------------#this temp holding area needs to be large enough to hold a full archive
                                          #See http://mran.revolutionanalytics.com/accounting.txt for a current MRAN size
MRAN_HOME="MRAN" #------------------------#name of zpool where you want to import packages snapshot stream to


#STEP 1 - get a replication stream from master MRAN server

#we use rsync for higher efficiency over WAN

#base rsync URL and module for Revo master server exports
#rsync -tv mran.revolutionanalytics.com::MRAN-exports

#choose an appropriate export
#note this example is a comprehensive replication stream current as of the date
#displayed in the file name.
rsync -tv $MASTER_URL::$RSYNC_MODULE/$ARCHIVE $TMP_DESTINATION


#STEP 2 -import the replication stream to your zpool or FS

#WARNING - use zfs recv switches with care
#below are the two most likely switches you will need
#use at your own risk!

#from the zfs man page:

# -F
#Force a rollback of the file system to the most recent snapshot before performing
#the receive operation. If receiving an incremental replication stream
#(for example, one generated by zfs send -R -[iI]), destroy snapshots and
#file systems that do not exist on the sending side.

# -d
#Cause the file system name of the target snapshot to be determined by appending
#a portion of the sent snapshot's name to the specified target filesystem.

#note that if you have an existing pool/fs combo, you can use that name here in
#place of `MRAN`
sudo zfs recv -F -d $MRAN_HOME < /$TMP_DESTINATION/$ARCHIVE