安裝 wt
工具
wget http://source.wiredtiger.com/releases/wiredtiger-3.0.0.tar.bz2
tar xvf wiredtiger-3.0.0.tar.bz2
cd wiredtiger-3.0.0
sudo yum install snappy-devel -y
./configure --enable-snappy
make
修復 wt
文件
將要修復的mongo的 存儲目錄整個複製一份到 data ,這裏比如我要恢復 collection-242-696896999396352821.wt 文件 ,命令如下
./wt -v -h ../data -C "extensions=[./ext/compressors/snappy/.libs/libwiredtiger_snappy.so]" -R dump -f ../collection.dump collection-242-696896999396352821.wt
output:
collection-242-696896999396352821.wt 3507261
修復好的數據在 …/collection.dump 中,需要導出,注意這裏的文件沒有 wt 後綴
./wt -v -h ../data -C "extensions=[./ext/compressors/snappy/.libs/libwiredtiger_snappy.so]" -R dump -f ../collection.dump collection-242-696896999396352821
數據恢復
- 新建一個庫
use testdb
db.back.insert({test: 1})
db.back.remove({})
db.back.stats()
collection-15–558436840631144017
# 找到 back 集合 的文件是 collection-15–558436840631144017
-
將新mongo服務關閉,不然會佔用 collection-15–558436840631144017.wt
將之前的 collection.dump load 到 testdb 的 collection-15–558436840631144017 ,注意這裏的 …/…/data/mongodb/data 是新庫的存儲地址
./wt -v -h ../../data/mongodb/data -C "extensions=[./ext/compressors/snappy/.libs/libwiredtiger_snappy.so]" -R load -f ../collection.dump -r collection-15–558436840631144017
輸出如下:
collection-15–558436840631144017 :3507261
- 再去新mongo 查看
db.back.count()
0
db.repairDatabase()
再去新mongo 查看 db.back.count()
3507261
完成恢復