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. This mongo instance need use the default port 27017 and can be connected without password.

Dependencies:

1. c++ boost library > 4.7
2. mongo c++ client library

Compile:

$ cd mreco
$ scons Usage：

1. 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

2. 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:

if you find any bugs, please report to [email protected]

It would be my pleasure that this tool can help anyone.

Known Issues:

1. There are some changes after r2.4.6 (73ca6bf23e0d37ee781085466df6c989558c64a3), mreco will not work for the version after r2.4.6

TODO:

fix any known issues