I am running a standalone mongodb server 3.2.6 on Suse 11 x86_64 (production system)
After a server crash, mondodb server don't start with error messages:

{{2017-03-17T10:23:57.850+0100 E STORAGE [initandlisten] WiredTiger (-31802) [1489742637:850794][5845:0x7ffc3af69c80], file:WiredTiger.wt, connection: unable to read root page from file:WiredTiger.wt: WT_ERROR: non-specific WiredTiger error
2017-03-17T10:23:57.851+0100 E STORAGE [initandlisten] WiredTiger (0) [1489742637:851001][5845:0x7ffc3af69c80], file:WiredTiger.wt, connection: WiredTiger has failed to open its metadata
2017-03-17T10:23:57.851+0100 E STORAGE [initandlisten] WiredTiger (0) [1489742637:851074][5845:0x7ffc3af69c80], file:WiredTiger.wt, connection: This may be due to the database files being encrypted, being from an older version or due to corruption on disk
2017-03-17T10:23:57.851+0100 E STORAGE [initandlisten] WiredTiger (0) [1489742637:851148][5845:0x7ffc3af69c80], file:WiredTiger.wt, connection: You should confirm that you have opened the database with the correct options including all encryption and compression options}}

I try to repair using mongod --repair with no success.