[SERVER-17244] Unknown storage engine: wiredtiger Created: 10/Feb/15  Updated: 12/Feb/15  Resolved: 10/Feb/15

Status: Closed
Project: Core Server
Component/s: WiredTiger
Affects Version/s: 3.0.0-rc8
Fix Version/s: None

Type: Question Priority: Major - P3
Reporter: Neville Franks Assignee: Unassigned
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
related to SERVER-16811 Only register wiredTiger factory once Closed
Participants:

 Description   

I've installed MongoDB V3 64bit RC8 and am getting the following error

"2015-02-11T07:25:20.865+1100 I STORAGE [initandlisten] exception in initAndListen: 18656 Cannot start server with an unknown storage engine: wiredtiger,
terminating"

for the cmdline:
"c:\mongodb-win32-x86_64-2008plus-3.0.0-rc8\bin\mongod.exe --journal --dbpath c:/webapps/database --storageEngine wiredtiger"



 Comments   
Comment by Ramon Fernandez Marina [ 12/Feb/15 ]

nevf, can you please send the link for the white paper you mention? That will help routing the issue to the right people.

As for your question, one can't "convert" a MMAPv1 instance to a WiredTiger one. Stand-alone instances are "converted" via dump and restore, and replica sets can be upgraded one node at a time. For more information please see the development release notes for 3.0.0, in particular the upgrade recommendations and checklists.

Comment by Neville Franks [ 10/Feb/15 ]

Ramon, thanks for the quick response. I copied this from the MongoDB Whitepaper PDF I downloaded. It would be prudent to update that document.

Can you point me at Docs for converting a MMAP DB to WiredTiger? Now I get:

"2015-02-11T07:51:08.249+1100 I STORAGE [initandlisten] exception in initAndListen: 28574 Cannot start server. Detected data files in c:/webapps/database
created by storage engine 'mmapv1'. The configured storage engine is 'wiredTiger'., terminating"

Comment by Ramon Fernandez Marina [ 10/Feb/15 ]

nevf, starting with 3.0.0-rc6 we normalized the storage engine name to "wiredTiger", please fix the capitalization in your command line. See SERVER-16811 for more details.

Regards,
Ramón.

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