mreco

A tool for recovering dropped collection or deleted rows

mreco will read mongo data file directly to recover deleted rows OR dropped collections. When we use mreco, we also need a mongo instance to store the recovered data. To make the mreco simple, the mongo instanace have to listen on default port 27017 and no password required when loggin.

Dependencies:

c++ boost library 1.49
mongo c++ client library

Compile:

$ git tag -l  (only taged version is tested, these commits after the lastest tag is still in development)
$ git checkout v..
$ scons

Usage：

Recover deleted rows
```
mreco --deleted --db=dbname --dcoll=dbname.collection --dbpath=/data/mongo/data -t abc.vip.xxx.com -c tdb.coll
```
- --deleted: recovered the deleted rows
- --dbpath: the location of mongo data file, if directoryperdb is used, we need to include db name in the dbpath also.
- -t xxx: the target mongo instance
- -c tdb.coll: the database name and collection name to store the recovered data
Recover dropped collection
```
mreco --db=dbname  --dbpath=/data/mongo/data -t abc.vip.xxx.com -c tdb.coll2
```
This will recover all the all the rows in all the dropped collection. we can't just recover a specialized collection here(I think it is impossible here). we have to filter out the rows we needed in all the recover data.

Bug report:

The code of MongoDB changed ofter, this tool has been tested on 2.6.1-;

if you find any bugs, please report to zhihuifan@163.com

Known Issues:

TODO:

fix any known issues