公司大部份的機器都架在Debian(Ubuntu) Xen Server上

目前已進貨新NAS一臺

該寫一下備份了

採用SNAPSHOT的方式來備份

最基本的就是先弄好NFS作為備份地

192.168.1.17:/volume1/root on /blvm type nfs (rw,tcp,addr=192.168.1.17)

目前這臺只有四臺主機，兩臺採用LVM，兩臺是FILE方式

root@pm-team-acer:~# xen list
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0  3249     8     r-----  409531.6
samtest                                     21  1024     2     -b----    2165.5
keenhigh-git                                24   384     2     -b----    3028.7
ag-server                                   36  1024     1     -b----    2524.3
artifactory-server                          37  1024     1     -b----     825.4

詳細見SH的相異之處

#!/bin/bash
#sam141113 v0
#sam150515 v1
#sam150516 v2
#sam150603 add timer
#for acer-192.168.1.21
#for lv in `lvdisplay /dev/pm-team-acer-vg | grep 'LV Path' | awk '{print $3}'`
#{
cp -rf /etc/xen/* /blvm/acer
DEST="/blvm/acer"
SAM=`date "+%Y%m%d%H%M"`
  startTimer() {
      START_TIME=$(date)
      S_TIME=$(date +%s)
  }

 endTimer() {
    END_TIME=$(date)
    E_TIME=$(date +%s)
    DURATION=$(echo $((E_TIME - S_TIME)))
   if [[ ${DURATION} -le 60 ]] ; then
        echo "Backup Duration: ${DURATION} Seconds"
    else
        echo "Backup Duration: $(awk 'BEGIN{ printf "%.2f\n", '${DURATION}'/60}') Minutes"
    fi
  }
 for lv in $(</home/samlin/list); do
  startTimer
  echo "lv: $lv"
  LV_NAME="`basename $lv`"
  LV_SIZE="`lvs --units m |grep $LV_NAME |awk '{print $4}'`"
  LV_UUID="`lvdisplay $lv | grep 'LV UUID' | awk -F'LV UUID' '{print $2}' | sed 's/^ *//g'`"
  LV_SNAPNAME="SNAP_$LV_NAME"
 SAM1="`echo "$LV_NAME" |sed 's/-disk//g'`"
  echo "shutdown $SAM1"
 echo "LV NAME: $LV_NAME"
  echo "LVM Logical Volume: $lv"
  echo "Size: $LV_SIZE MB"
  echo "UUID: $LV_UUID"
 echo "Snapshot name: $LV_SNAPNAME"
  echo "Removing old snapshot (if any)..."
    lvremove -f "/dev/pm-team-acer-vg/$LV_SNAPNAME"
 echo "Creating snapshot..."
   lvcreate -L+$LV_SIZE --snapshot -n"/dev/pm-team-acer-vg/$LV_SNAPNAME" "$lv"
 sleep 5
 echo "Backing up snapshot..."
     dd if="/dev/pm-team-acer-vg/$LV_SNAPNAME" bs=512k of=/dev/stdout |/usr/bin/pigz -9 -b 256 > "$DEST/$LV_SNAPNAME.$SAM.gz"
 echo "Removing snapshot..."
   lvremove -f "/dev/pm-team-acer-vg/$LV_SNAPNAME"
 echo "start $SAM1"
  echo "--------------Del more than 3--------------------"
     (ls -t $DEST/$LV_SNAPNAME* |head -n 3;ls -t $DEST/$LV_SNAPNAME*) |sort |uniq -u |xargs rm
  endTimer
  echo "------------------------------------------------"
 done
echo "start backup Fix lvm"
for fix in $(</home/samlin/list1); do
 startTimer
    NN=`echo $fix |awk -F',' '{print $1}'`
    LL=`echo $fix |awk -F',' '{print $2}'`
  echo stop ${NN}
   xl shutdown ${NN}
 echo Backing up ${NN}
   dd if=${LL} bs=512k of=/dev/stdout |/usr/bin/pigz -9 -b 256 > $DEST/${NN}.$SAM.gz
  echo start ${NN}
    xl create /etc/xen/${NN}.cfg
  echo "--------------Del more than 3--------------------"
    (ls -t $DEST/${NN}*.gz |head -n 3;ls -t $DEST/${NN}*.gz) |sort |uniq -u |xargs rm
 endTimer
done
#} > /blvm/backup-lvm-acer-sam.log
#mutt -s "backup-lvm-acer" mis at fuhu.tw < /blvm/backup-lvm-acer-sam.log

以上是測試正常腳本

分隔兩部份

一區為使用lvcreate的方式，取得大小_建立snapshot_壓縮_至目的地_移除snapshot

一區為使用先停xen guest os的方式，先DD出來_壓縮_至目的地_啟動

snapshot的方式沒有停機，採直接DD到目的地

當然原本的方式是由LVM指令取得相關資訊

但由於許多臺機器並無開機及備份需求

所以改採用 cat 由檔案讀入方式

以下一份附上格式、內容

oot@pm-team-acer:~# cat list
/dev/pm-team-acer-vg/keenhigh-git-disk
/dev/pm-team-acer-vg/testgerrit-disk

root@pm-team-acer:~# cat list1
ag-server,/home/xen/domains/ag-server/disk.img
artifactory-server,/home/xen/domains/artifactory-server/disk.img

##############################################

另一臺環境相同，差別為都是由LVM所建立

所以相對腳本少了許多

#!/bin/bash
#sam141113 v0
#sam150515 v1
#sam150516 v2
#sam150603 add timer
#for asus-192.168.1.20
#for lv in `lvdisplay /dev/pm-team | grep 'LV Path' | awk '{print $3}'`
#{
cp -rf /etc/xen/* /blvm/asus
DEST=/blvm/asus
SAM=`date "+%Y%m%d%H%M"`
startTimer() {
    START_TIME=$(date)
    S_TIME=$(date +%s)
}

endTimer() {
 END_TIME=$(date)
  E_TIME=$(date +%s)
  DURATION=$(echo $((E_TIME - S_TIME)))
 if [[ ${DURATION} -le 60 ]] ; then
      echo "Backup Duration: ${DURATION} Seconds"
 else
      echo "Backup Duration: $(awk 'BEGIN{ printf "%.2f\n", '${DURATION}'/60}') Minutes"
 fi
}
for lv in $(</home/samlin/list)
do
 startTimer
  LV_NAME="`basename $lv`"
  LV_SIZE="`lvs --units m |grep $LV_NAME |awk '{print $4}'`"
  LV_UUID="`lvdisplay $lv | grep 'LV UUID' | awk -F'LV UUID' '{print $2}' | sed 's/^ *//g'`"
  LV_SNAPNAME="SNAP_$LV_NAME"
 echo "LV NAME: $LV_NAME"
  echo "LVM Logical Volume: $lv"
  echo "Size: $LV_SIZE MB"
  echo "UUID: $LV_UUID"
 echo "Snapshot name: $LV_SNAPNAME"
  echo "Removing old snapshot (if any)..."
  lvremove -f "/dev/pm-team/$LV_SNAPNAME"
 echo "Creating snapshot..."
 lvcreate -L+$LV_SIZE --snapshot -n"/dev/pm-team/$LV_SNAPNAME" "$lv"
 sleep 10
  echo "Backing up snapshot..."
 dd if="/dev/pm-team/$LV_SNAPNAME" bs=512k of=/dev/stdout |/usr/bin/pigz -9 -b 256 > "$DEST/$LV_SNAPNAME.$SAM.gz"
 echo "Removing snapshot..."
 lvremove -f "/dev/pm-team/$LV_SNAPNAME"
 echo "--------------Del Old than 3--------------------"
    (ls -t $DEST/$LV_SNAPNAME* |head -n 3;ls -t $DEST/$LV_SNAPNAME*) |sort |uniq -u |xargs rm
  endTimer
  echo "-------------------------------------------------------"
done
#} > /blvm/backup-lvm-asus-sam.log
#mutt -s "backup-lvm-asus" mis at fuhu.tw < /blvm/backup-lvm-asus-sam.log

##############################################

備份出來格式

目前還欠版本保留個數及發信通知功能待加入

要使用lvm的snapshot  記得查看是否有以下指令

##########################################

檔案保留三個

(ls -t $LV_SNAPNAME |head -n 3;ls -t $LV_SNAPNAME) |sort |uniq -u |xargs rm

使用mutt寄信

mutt -s "backup-lvm-asus" mis fuhu.tw < /blvm/backup-lvm-asus-sam.log

因為直接用crontab 排程寄信，所以直接mark掉shell 裡的mutt.

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