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Bug #4980

closed

metaslabs should have a fragmentation metric

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

Status:
Closed
Priority:
Normal
Category:
zfs - Zettabyte File System
Start date:
2014-07-09
Due date:
% Done:

100%

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

Description

George Wilson:

Each metaslab can maintain a fragmentation metric that is derived from the
space_map histogram. This information can used in the selection of metaslabs.
This metric can be rolled up to devices and pool level and exposed to the user
via 'zpool list'.

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