How does Ceph isolate bad blocks?

[이영준 <youngjoon.lee@xxxxxxxxxxxxx>]

Dear, Ceph.

 

I'm wondering how does Ceph isolate bad blocks when EIO occurs.

I saw source codes and I found the logic of deep scrub, chunky_scrub() in PG.cc.

And I understood the real recovery logic is in submit_push_data() in ReplicatedBackend.cc.

It pulled an object from another replica and submit it.

But, I couldn't find the logic about isolating bad blocks for preventing future errors.

I think EIO error will occur again when Ceph accesses that block block again.

Is there any isolation logic for bad blocks?

Thank you.

 

 

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이영준  LEE YOUNGJOON
Naver Labs 서비스플랫폼G 분산시스템개발랩 / 연구원

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