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Feature #3113

closed

ztest should use watchpoints to protect frozen arc bufs

Added by Christopher Siden almost 10 years ago. Updated about 9 years ago.

Status:
Resolved
Priority:
Normal
Category:
zfs - Zettabyte File System
Start date:
2012-08-22
Due date:
% Done:

90%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage
Gerrit CR:

Description

There is a relatively frequent failure in ztest where the arc detects that a buffer was modified while frozen and fails an assert. Unfortunately by the time the core dump happens the culprit (the guy who modified the buffer contents) is long gone.

This feature would add watch points to all arc buffers so that we can detect the invalid modification as it is happening.

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