mongodb单实例lvm快照备份和恢复

ps -ef|grep mongo             #查看mongodb实例数据目录所在位置

root      1525  1389  3 20:44 pts/0    00:00:17

/usr/local/mongodb/bin/mongod –config     /data/mongodb/conf/mongo_config.yml

 

 [root@host-172-16-13-12 conf]# df -h

Filesystem                       Size  Used Avail Use% Mounted on

devtmpfs                         3.9G     0  3.9G   0% /dev

/dev/mapper/centos-root           50G  2.1G   48G   5% /

/dev/vda1                       1014M  155M  860M  16% /boot

tmpfs                            797M     0  797M   0% /run/user/0

/dev/mapper/VolGroup01-mdb--new   29G  337M   29G   2% /data

[root@host-172-16-13-12 mongodb]# ls /data/mongodb/

conf  data  logs

  pvcreate /dev/vda4                              #创建pv卷

  Physical volume "/dev/vda4" successfully created.

vgcreate VolGroup02  /dev/vda4                    #创建vg

  Volume group "VolGroup02" successfully created

[root@host-172-16-13-12 conf]# vgs

  VG         #PV #LV #SN Attr   VSize   VFree

  VolGroup01   1   1   0 wz--n- <30.00g 1020.00m

  VolGroup02   1   0   0 wz--n- <60.00g  <60.00g

  centos       1   1   0 wz--n-  50.00g       0

lvcreate --size 59G --name mdb-new2 VolGroup02     #创建lv

  Logical volume "mdb-new2" created.

mkfs.xfs /dev/VolGroup02/mdb-new2                  #格式化lv

dd if=/dev/VolGroup01/mdb-new |gzip >mdb-snap01.gz #创建快照备份

60817408+0 records in

60817408+0 records out

31138512896 bytes (31 GB) copied, 266.288 s, 117 MB/s

gzip -d -c mdb-snap01.gz |dd of=/dev/VolGroup02/mdb-new2 #恢复快照

60817408+0 records in

60817408+0 records out

31138512896 bytes (31 GB) copied, 837.877 s, 37.2 MB/s

mkdir /srv                                        #创建挂载目录

mount -o nouuid /dev/VolGroup02/mdb-new2 /srv     #挂载快照盘

[root@host-172-16-13-12 data]# pwd

/srv/mongodb/data

[root@host-172-16-13-12 mongodb]# du -sh *        #查看文件

4.0K    conf

303M    data

16K     logs

/usr/local/mongodb/bin/mongod --config /srv/mongodb/conf/mongo_config.yml &   #启动mongodb实例

!ps

ps -ef|grep mongo                     #查看mongodb实例进程

root      1525  1389  0 20:44 pts/0    00:00:29 /usr/local/mongodb/bin/mongod --config /data/mongodb/conf/mongo_config.yml

root     16641  1389 10 21:33 pts/0    00:00:01 /usr/local/mongodb/bin/mongod --config /srv/mongodb/conf/mongo_config.yml

[root@host-172-16-13-12 mongodb]# mongo localhost:27018 #登陆实例

MongoDB shell version v4.4.17

> show dbs;

admin   0.000GB

config  0.000GB

foo     0.002GB

local   0.000GB

> use foo

switched to db foo

> show tables

bar

> db.bar.count()                                      #查询数据

100000