X-Git-Url: http://git.pippins.net/embedvideo/.git/?a=blobdiff_plain;f=zfs-replicate;h=a082ce3fe9de2214ca9d07e2c9dbf5f7fe76ac25;hb=471f2873d53eebe62223121be58bc3f795511a12;hp=413d078e05cf28311896be3d7d94bcca454aa6d0;hpb=9a12c36d03babea71bd13dc208a64ff91f61b699;p=zfs-ubuntu%2F.git diff --git a/zfs-replicate b/zfs-replicate index 413d078..a082ce3 100755 --- a/zfs-replicate +++ b/zfs-replicate @@ -1,26 +1,24 @@ #/bin/bash +# Author: Carl Baldwin & Alan Pippin +# Description: This script replicates a remote zfs filesystem to a local zfs pool. +# This script will keep all snapshots in sync, removing the ones +# that have been deleted since the last replicate was performed. +# This script will only send the new, or missing, snapshots since +# the last replicate was performed. # Usage: replicate + +# source our configuration +config="${0%/*}/zfs-scripts.conf" +[ -e "${config}.dist" ] && . ${config}.dist +[ -e "${config}" ] && . ${config} + +# command line arg parsing remote=$1 remote_fs=$2 remote_pool=${2%%/*} -remote_lockdir="/tmp/zfs-admin-lock" hostname=`hostname` -# Set the name of the local pool used to store the backup of the remote -local_pool=backups - -# Set the email address to send notification to -mailto=root@pippins.net -mailx=/usr/bin/mailx - -# When this variable is set, local filesystems will be destroyed -# before receiving a full streams into them from the remote source. -destroy_local_filesystem_on_full_replicate=0 - -# The ssh connection doesn't find zfs without this. -zfs=/usr/sbin/zfs - # Setup our cleanup and exit trap cleanup() { if [[ -e "$local_list" ]]; then @@ -30,9 +28,9 @@ cleanup() { rm -f $remote_list fi if [[ -n "$remote" ]]; then - ssh $remote ls -d "$remote_lockdir" > /dev/null 2>&1 + ssh $remote ls -d "$lockdir" > /dev/null 2>&1 if [[ $? == 0 ]]; then - ssh $remote rm -rf "$remote_lockdir" + ssh $remote rm -rf "$lockdir" fi fi } @@ -82,7 +80,7 @@ maxsleeptime=60 maxattempts=100 attempts=0 while true; do - ssh $remote mkdir "$remote_lockdir" >/dev/null 2>&1 + ssh $remote mkdir "$lockdir" >/dev/null 2>&1 if [ $? != 0 ]; then # Another zfs admin tool is running. # Wait a random amount of time and try again @@ -96,7 +94,7 @@ while true; do if [[ $attempts -gt $maxattempts ]]; then # We've exceeded our maximum while loop count echo "-E- The zfs filesystem has been locked down. Skipping replicate operation." - fail_msg=`ssh $remote ls -ld $remote_lockdir 2>&1` + fail_msg=`ssh $remote ls -ld $lockdir 2>&1` fatal_and_exit "zfs-replicate-all unable to obtain zfs admin lock:\n$fail_msg" $mailto fi done