[SERVER-35577] read checksum error on wiredTiger.wt Created: 13/Jun/18 Updated: 14/Aug/18 Resolved: 15/Jun/18 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | WiredTiger |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Bug | Priority: | Major - P3 |
| Reporter: | Mandy Klein | Assignee: | Nick Brewer |
| Resolution: | Done | Votes: | 0 |
| Labels: | envns, rns, rps, trcf, wtc | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Attachments: |
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| Operating System: | ALL |
| Participants: |
| Description |
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we have an error in our WiredTiger.wt file and can not start our database anymore. Can you please help us with this problem?
We get the following error: [1528707963:669364][119248:0x7fbf92551740], file:WiredTiger.wt, connection: read checksum error for 4096B block at offset 12288: block header checksum of 2896414579 doesn't match expected checksum of 3327239497
It is a production error, the removal of which is very urgent
thanks a lot for your support |
| Comments |
| Comment by Nick Brewer [ 15/Jun/18 ] |
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Hi Mandy, What I did was basically a wt salvage on the two files you supplied. I'm glad you were able to get most of your data back. For future reference, here's some precautions you can take to mitigate issues related to unreliable storage layers or server failures:
Nick |
| Comment by Mandy Klein [ 15/Jun/18 ] |
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Hello, we were able to reboot the database with the help of the files, but could not access the data as a whole. we also needed to clean up the files, using salvage. See also: After that, we lost a small amount of data but were able to save the bulk.
Thanks for your quick support, mayve youcan also tell me what you needed to change about the data?
Best regards Mandy
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| Comment by Nick Brewer [ 14/Jun/18 ] |
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Hi, I've attached the files after a repair attempt. Would you please extract these files, substitute them for the current ones in your $dbpath, and let us know if it resolves the issue? Thanks, |
| Comment by Mandy Klein [ 14/Jun/18 ] |
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@nick Brewer, wiredtiger.turtle file is uploaded |
| Comment by Nick Brewer [ 13/Jun/18 ] |
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kle, Could you upload the wiredtiger.turtle file as well? This will be necessary in order to attempt to recover the file. Thanks, |
| Comment by Eric Milkie [ 13/Jun/18 ] |
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I moved your request to the SERVER project. The WiredTiger project is for consumers of the standalone WiredTiger storage engine. |
| Comment by Mandy Klein [ 13/Jun/18 ] |
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@keith.bostic, its a MongoDB insallation |
| Comment by Keith Bostic (Inactive) [ 13/Jun/18 ] |
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kle, is this a MongoDB installation, or a standalone WiredTiger installation? |