├── 02pull ├── LICENSE ├── README.md └── bashclub-zfs /02pull: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | SCRIPTPATH='/root' 3 | SOURCEHOST='host.dom.tld' 4 | SOURCEPATH='rpool/data' 5 | DESTPATH='rpool/data/Replica' 6 | PORT='22' 7 | SOURCEALL=$(ssh -p$PORT root@$SOURCEHOST 'for src in $(zfs list -H -o name |grep '"$SOURCEPATH"'/|grep -v alt|grep -v state|grep -v disk-9); do echo ${src##*/}; done') #determines Source Datasets without 'alt, state and disk-9' in Name - Those are typlically not replicated 8 | echo '' 9 | echo Repliziere von $SOURCEHOST $SOURCEALL 10 | echo '' 11 | for DATA in $SOURCEALL 12 | do 13 | $SCRIPTPATH/bashclub-zfs -p $PORT -k 5 -v $SOURCEHOST:$SOURCEPATH/$DATA $DESTPATH 14 | done 15 | ### 16 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | **We discontinue this one. 2 | Please go ahead with ... 3 | Much faster and versatile. 4 | 5 | **https://github.com/bashclub/zsync** 6 | ** 7 | 8 | # bashclub-zfs 9 | zfs snapshot send/receive supporting pull 10 | 11 | ## Basic Usage 12 | bashclub-zfs remote_host:src_pool/fs dest_pool 13 | 14 | This will create a new snapshot on the remote host (via SSH) and "send" it to 15 | your local host where it will be received into dest_pool/fs. 16 | 17 | I use this on my laptop to backup my home server to a removable drive. This 18 | *pull* functionality was something I had trouble finding in the other similar 19 | scripts out there, and was the main reason I wrote this. 20 | 21 | ## Features 22 | * pull from a remote source to a local (or remote) destination 23 | * (source and destination can each be either local or remote) 24 | * keeps its own set of snapshots 25 | * SSH connection is made with regular user, and uses sudo for ZFS commands 26 | * sends incremental snapshots after first run 27 | 28 | ## Features and Limitations 29 | * always uses sudo 30 | * always creates recursive snapshots (`zfs snapshot -r`) - But better use 02pull to sync single Datasets 31 | * select to send full replication stream (`zfs send -R`) or Intermediate Snapshots (zfs send -I), default without sending Full and Intermediate! 32 | * destination should be specified as the *parent* of the desired destination 33 | (`zfs recv -e`) 34 | 35 | ## Install/Requirements 36 | * There is no need to install, just clone/download where you like and run 37 | * Created & tested with [ZFS On Linux][1] on Ubuntu 16.04 38 | * Requires bash(1), date(1), sudo(8), and zfs(8) 39 | * Requires ssh(1) for remote hosts 40 | * If your SSH environment requires a custom port or other configuration 41 | options, that will need to be done in your ssh_config(5) file 42 | 43 | ## Usage/Examples 44 | bashclub-zfs [-hvq] [-t tag] [-k keep] [-d dateopts] src dest 45 | use zfs send/recv to push/pull snapshots 46 | 47 | !This Release is default set to send raw. This means you can send encrypted and compressed Datasets 1:1! 48 | src the source fs, specified as [host:]pool/path/to/fs 49 | dest the destination fs parent, specified as [host:]pool/path/to/fs 50 | (the final path component of src will be appended to dest) 51 | -p ssh port 52 | -h help 53 | -v verbose mode 54 | -C SSH Compression - obsolete if send_opts="-v -w" are set to raw 55 | -R ZFS Re-Init 56 | -I Send intermediate Snapshots 57 | -q quiet mode 58 | -t tag tag to use for naming snapshots (default: backup-zfs) 59 | -k keep number of snapshots to keep on src (default: 5) 60 | -d dateopts options for date(1) - used to name the snapshots (default: +%F_%T) 61 | -s store mode - output snaps from local fs to ssh server 62 | -r read mode - read snaps from ssh server to local fs 63 | -g gpg-id gpg recipient key id (store mode only) 64 | 65 | # Local mode: Backup tank/system to backup/tank/system 66 | bashclub-zfs tank/system backup/tank 67 | 68 | # Pull mode: Backup tank/system on tankhost to localhost 69 | bashclub-zfs tankhost:tank/system backup/tank 70 | 71 | # Push mode: Backup tank/system on localhost to backuphost 72 | bashclub-zfs tank/system backuphost:backup/tank 73 | 74 | # Double remote mode: Backup tank/system on tankhost to backuphost 75 | bashclub-zfs tankhost:tank/system backuphost:backup/tank 76 | 77 | # In this mode, your client will establish two separate SSH sessions, 78 | # connect them with a pipe, and pull data from one while pushing to the 79 | # other. No data will be stored locally. 80 | 81 | [1]: https://github.com/zfsonlinux/zfs 82 | -------------------------------------------------------------------------------- /bashclub-zfs: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | # backup-zfs: use zfs send/recv to push/pull snapshots - New does not run twice 3 | prog="$(basename "$0")" 4 | 5 | usage() { 6 | cat >&2 <<-EOF 7 | usage: $prog [-hvq] [-t tag] [-k keep] [-d dateopts] src dest 8 | use zfs send/recv to push/pull snapshots 9 | 10 | !This Release is default set to send raw. This means you can send encrypted and compressed Datasets 1:1! 11 | 12 | src the source fs, specified as [host:]pool/path/to/fs 13 | dest the destination fs parent, specified as [host:]pool/path/to/fs 14 | (the final path component of src will be appended to dest) 15 | -p ssh port 16 | -h help 17 | -v verbose mode 18 | -C SSH Compression - obsolete if send_opts="-v -w" are set to raw 19 | -R ZFS Re-Init 20 | -I Send intermediate Snapshots 21 | -q quiet mode 22 | -t tag tag to use for naming snapshots (default: backup-zfs) 23 | -k keep number of snapshots to keep on src (default: 5) 24 | -d dateopts options for date(1) - used to name the snapshots (default: +%F_%T) 25 | -s store mode - output snaps from local fs to ssh server 26 | -r read mode - read snaps from ssh server to local fs 27 | -g gpg-id gpg recipient key id (store mode only) 28 | EOF 29 | exit $1 30 | } 31 | 32 | # log to syslog; if verbose or on a tty, also to stdout 33 | # usage: log msg 34 | log() { 35 | logger -t "$prog" -- "$@" 36 | if ! $quiet && [[ -t 1 ]] || $verbose ; then 37 | echo "$@" >&2 38 | fi 39 | } 40 | 41 | # exit with a code & message 42 | # usage: die $exitcode msg 43 | die() { 44 | code="$1" 45 | shift 46 | if [[ $code -ne 0 ]] ; then 47 | verbose=true log "FATAL: $@" 48 | else 49 | log "$@" 50 | fi 51 | exit $code 52 | } 53 | 54 | # run zfs(1) command either locally or via ssh 55 | # usage: ZFS "$host" command args... 56 | ZFS() { 57 | host="$1" 58 | shift 59 | if [[ -n $host ]] ; then 60 | log "remote ($host): zfs $@" 61 | ssh $sshcompress -p $port "$host" zfs "$@" 62 | else 63 | log "local: zfs $@" 64 | zfs "$@" 65 | fi 66 | } 67 | 68 | ( 69 | flock -n 9 || exit 1 70 | ### 71 | ### defaults 72 | ### 73 | tag="$prog" 74 | dateopts="+%F_%T" 75 | keep=5 76 | verbose=false 77 | quiet=false 78 | tossh=false 79 | fromssh=false 80 | port=22 81 | sshcompress="" 82 | reinit="" 83 | intermediate="-i " 84 | ### 85 | ### parse options 86 | ### 87 | while getopts "hvqk:p:t:d:srCIRg:" opt ; do 88 | case $opt in 89 | h) usage 0 ;; 90 | v) 91 | verbose=true 92 | send_opts="-v -w" 93 | recv_opts="-v" 94 | ;; 95 | q) quiet=true ;; 96 | k) keep=$OPTARG ;; 97 | p) port=$OPTARG ;; 98 | t) tag=$OPTARG ;; 99 | d) dateopts=$OPTARG ;; 100 | s) tossh=true ;; 101 | r) fromssh=true ;; 102 | C) sshcompress="-C " ;; 103 | R) reinit="-R " ;; 104 | I) intermediate="-I " ;; 105 | g) gpgid="$OPTARG" ;; 106 | *) usage 1 ;; 107 | esac 108 | done 109 | shift $((OPTIND-1)) 110 | date="$(date $dateopts)" 111 | $tossh && $fromssh && die 1 "-s and -r are mutually exclusive" 112 | if ! $tossh && [[ -n $gpgid ]] ; then 113 | die 1 "-g can only be used with -s" 114 | fi 115 | 116 | ### 117 | ### parse src & dest host/fs info 118 | ### 119 | # fail if there's ever >1 colon 120 | if [[ $1 =~ :.*: || $2 =~ :.*: ]] ; then 121 | die 1 "invalid fsspec: '$1' or '$2'" 122 | fi 123 | 124 | # fail if src or dest isn't specified 125 | if [[ -z $1 || -z $2 ]] ; then 126 | usage 1 127 | fi 128 | src="$1" 129 | dest="$2" 130 | 131 | ### 132 | ### ssh mode - output snaps from local fs to ssh or read snaps from ssh to local fs 133 | if $tossh ; then 134 | log "sending from local zfs filesystem to SSH server" 135 | 136 | # make sure src exists 137 | if [[ $src =~ : ]] ; then 138 | die 1 "$src must be a local zfs filesystem" 139 | elif [[ $(ZFS "" list -H -o name "$src" 2>/dev/null) != $src ]] ; then 140 | die 1 "$src must be a local zfs filesystem" 141 | fi 142 | 143 | # split dest to components 144 | if [[ $dest =~ : ]] ; then 145 | desthost="${dest%:*}" 146 | destpath="${dest#*:}" 147 | else 148 | die 1 "$dest must be ssh host:path" 149 | fi 150 | 151 | # get the last src component 152 | srcbase="${src##*/}" 153 | 154 | ### 155 | ### create new snapshot on src 156 | ### 157 | snap="${tag}_$date" 158 | cur="$src@$snap" 159 | ZFS "$srchost" snapshot -r "$cur" || die $? "zfs snapshot failed" 160 | 161 | ### 162 | ### get newest snapshot on dest - it must exist on src 163 | ### 164 | #last="$(ZFS "$desthost" list -d 1 -t snapshot -H -S creation -o name $destfs/$srcbase | head -n1 | cut -f2 -d@)" 165 | last="$(ssh "$desthost" zfslast)" 166 | 167 | ### 168 | ### send 169 | ### 170 | # refuse to send without a valid .last maker 171 | if [[ -z $last ]] ; then 172 | die 1 "ssh path contains no .last file" 173 | # special case: tagged snapshots exist on dest, but src has rotated through all 174 | elif ! ZFS "$srchost" list $src@$last &>/dev/null ; then 175 | die 1 "no incremental path from from $src to $dest" 176 | # normal case: send incremental 177 | else 178 | log "sending $([[ -n $gpgid ]] && echo "encrypted ")incremental snapshot from $src to $dest (${last#${tag}_}..${cur#*@${tag}_})" 179 | #ZFS "$srchost" send $send_opts -R $intermediate "$last" "$cur" | ZFS "$desthost" receive $recv_opts -Fue "$destfs" || die $? "zfs incremental send failed" 180 | if [[ -n $gpgid ]] ; then 181 | ZFS "$srchost" send $send_opts -R $intermediate "$last" "$cur" \ 182 | | gpg --trust-model always --encrypt --recipient "$gpgid" \ 183 | | ssh "$desthost" zfswrite "${tag}_$date.zfssnap.gpg" \ 184 | || die $? "zfs incremental send failed" 185 | ssh "$desthost" zfslast "$snap" 186 | else 187 | ZFS "$srchost" send $send_opts -R $intermediate "$last" "$cur" \ 188 | | ssh "$desthost" zfswrite "${tag}_$date.zfssnap" \ 189 | || die $? "zfs incremental send failed" 190 | ssh "$desthost" zfslast "$snap" 191 | fi 192 | fi 193 | 194 | exit 195 | elif $fromssh ; then 196 | log "receving from SSH server to local zfs filesystem" 197 | 198 | # make sure dest exists 199 | if [[ $dest =~ : ]] ; then 200 | die 1 "$dest must be a local zfs filesystem" 201 | elif [[ $(ZFS "" list -H -o name "$dest" 2>/dev/null) != $dest ]] ; then 202 | die 1 "$dest must be a local zfs filesystem" 203 | fi 204 | 205 | # split src into components 206 | if [[ $src =~ : ]] ; then 207 | srchost="${src%:*}" 208 | srcpath="${src#*:}" 209 | else 210 | die 1 "$src must be ssh host:path" 211 | fi 212 | 213 | ### 214 | ### receive 215 | ### 216 | log "receiving incremental snapshot from $src to $dest" 217 | #ZFS "$srchost" send $send_opts -R $intermediate "$last" "$cur" | ZFS "$desthost" receive $recv_opts -Fue "$destfs" || die $? "zfs incremental send failed" 218 | for file in $(ssh "$srchost" zfsfind | sort) ; do 219 | log "receiving $file from $srchost" 220 | if [[ $file =~ \.gpg$ ]] ; then 221 | ssh "$srchost" zfsget "$file" | gpg | ZFS "$desthost" receive $recv_opts -Fue "$dest" \ 222 | && ssh "$srchost" rm "$file" 223 | else 224 | ssh "$srchost" zfsget "$file" | ZFS "$desthost" receive $recv_opts -Fue "$dest" \ 225 | && ssh "$srchost" rm "$file" 226 | fi 227 | done 228 | 229 | exit 230 | fi 231 | 232 | # discard anything before a colon to get the fs 233 | srcfs="${src#*:}" 234 | destfs="${dest#*:}" 235 | 236 | # iff there is a colon, discard everything after it to get the host 237 | [[ $src =~ : ]] && srchost="${src%:*}" 238 | [[ $dest =~ : ]] && desthost="${dest%:*}" 239 | 240 | # get the last src component 241 | srcbase="${srcfs##*/}" 242 | 243 | # ensure the destination fs exists before proceeding 244 | if [[ $(ZFS "$desthost" list -H -o name "$destfs" 2>/dev/null) != $destfs ]] ; then 245 | die 1 "destination fs '$destfs' doesn't exist" 246 | fi 247 | 248 | ### 249 | ### create new snapshot on src 250 | ### 251 | cur="$srcfs@${tag}_$date" 252 | ZFS "$srchost" snapshot -r "$cur" || die $? "zfs snapshot failed" 253 | 254 | ### 255 | ### get newest snapshot on dest - it must exist on src 256 | ### 257 | last="$(ZFS "$desthost" list -d 1 -t snapshot -H -S creation -o name $destfs/$srcbase | head -n1 | cut -f2 -d@)" 258 | 259 | ### 260 | ### send & receive 261 | ### 262 | # 1st time: send full snapshot 263 | if [[ -z $last ]] ; then 264 | log "sending full recursive snapshot from $src to $dest" 265 | ZFS "$srchost" send $send_opts $reinit "$cur" | ZFS "$desthost" receive $recv_opts -Fue "$destfs" || die $? "zfs full send failed" 266 | # special case: tagged snapshots exist on dest, but src has rotated through all 267 | elif ! ZFS "$srchost" list $srcfs@$last &>/dev/null ; then 268 | die 1 "no incremental path from from $src to $dest" 269 | # normal case: send incremental 270 | else 271 | log "sending incremental snapshot from $src to $dest (${last#${tag}_}..${cur#*@${tag}_})" 272 | ZFS "$srchost" send $send_opts -R $intermediate "$last" "$cur" | ZFS "$desthost" receive $recv_opts -Fue "$destfs" || die $? "zfs incremental send failed" 273 | fi 274 | 275 | ### 276 | ### clean up old snapshots 277 | ### 278 | for snap in $(ZFS "$srchost" list -d 1 -t snapshot -H -S creation -o name $srcfs \ 279 | | grep -F "@${tag}_" | cut -f2 -d@ | tail -n+$((keep+1)) ) ; 280 | do 281 | ZFS "$srchost" destroy -r $srcfs@$snap 282 | done 283 | 284 | ) 9>/var/lock/bashclub-zfs.lock 285 | --------------------------------------------------------------------------------