raidz expansion PRE-ALPHA CODE

[mahrens]

Summary

Everything happens in one txg

On disk format will change, you will have to destroy your pools.

Design details:
http://www.open-zfs.org/w/images/6/68/RAIDZ_Expansion_v2.pdf
https://www.youtube.com/watch?v=ZF8V7Tc9G28

[grahamperrin]

From RAID-Z Expansion Feature for ZFS Goes Live | FreeBSD Foundation:

… the biggest need for additional help is in testing the feature further and in doing a code review before this feature can be integrated.

I assume that this relatively old D15124 is superseded (no longer needs review), true?

RAIDZ Expansion feature by ahrens · Pull Request #12225 · openzfs/zfs

[emaste]

In D15124#773782, @grahamperrin wrote:

I assume that this relatively old D15124 is superseded (no longer needs review), true?

RAIDZ Expansion feature by ahrens · Pull Request #12225 · openzfs/zfs

Correct, the GitHub pull request is the most up-to-date version of this work.

[emaste]

This review can be closed.
RAID-Z expansion was merged into OpenZFS main in https://github.com/openzfs/zfs/commit/5caeef02fa531238b4554afc977533382e43314f