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Commit registry writes to stable storage to avoid corrupt registry files #6877

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kvch
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@kvch kvch commented Apr 16, 2018

Called Sync before closing the file in order to flush everything to disk before closing the registry file.

Closes #6792

@kvch kvch added in progress Pull request is currently in progress. Filebeat Filebeat labels Apr 16, 2018
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urso commented Apr 16, 2018

I don't think we need O_DIRECT. Alternatively to the different Open functions, we could call Sync before Close. This way we don't need the specialized windows vs. Posix code. The (*os.File).Sync code translates to the correct syscalls (fsync on Unix, FlushFileBuffers on Windows).

Something went wrong. Almost all filebeat tests are failing.

@urso urso requested a review from andrewkroh April 16, 2018 19:06
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I agree with @urso. I see that there is a missing fsync in Winlogbeat before the rename.

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ruflin commented Apr 17, 2018

PR will need a changelog.

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kvch commented Apr 17, 2018

@urso @andrewkroh Thanks for the early review! I assumed that something is not right that's why I haven't added the label "review" to my PR. :)

@kvch kvch force-pushed the fix/filebeat/write-state-directly-to-disk branch from 7caee89 to 98ef1fe Compare April 17, 2018 13:26
@kvch kvch changed the title Write state changes directly to disk both in Filebeat and Winlogbeat Commit registry writes to stable storage to avoid corrupt registry files Apr 17, 2018
@kvch kvch added review in progress Pull request is currently in progress. and removed in progress Pull request is currently in progress. labels Apr 17, 2018
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kvch commented Apr 17, 2018

Apparently, the CIs are on fire...
EDIT: No, everything is green.

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ruflin commented Apr 18, 2018

The original change to windlogbeat has been quite a bit more extensive: #2434 @urso I wonder if f.Sync() is going to cover the same cases and if yes, we should probably also simplify it in winlogbeat or even better extract it to have only 1 way of doing it.

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kvch commented Apr 23, 2018

Please, image that I have removed the label "in progress" from this PR. :D

@andrewkroh andrewkroh removed the in progress Pull request is currently in progress. label Apr 24, 2018
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We could also make the same change in Winlogbeat and remove the specialized code I added.

@andrewkroh andrewkroh merged commit 4d2150d into elastic:master Apr 26, 2018
@urso urso added the needs_backport PR is waiting to be backported to other branches. label May 4, 2018
urso pushed a commit to urso/beats that referenced this pull request May 4, 2018
…les (elastic#6877)

* fsync contents of registry file to storage

(cherry picked from commit 4d2150d)
@urso urso added v6.3.0 and removed needs_backport PR is waiting to be backported to other branches. labels May 4, 2018
ruflin pushed a commit that referenced this pull request May 7, 2018
…les (#6877) (#7019)

* fsync contents of registry file to storage

(cherry picked from commit 4d2150d)
leweafan pushed a commit to leweafan/beats that referenced this pull request Apr 28, 2023
…les (elastic#6877) (elastic#7019)

* fsync contents of registry file to storage

(cherry picked from commit 6babaae)
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4 participants