RAIDZ Expansion in Practice: What It Solves and What It Doesn’t

[Klara Inc]

Original article here.
Consider this when replying.

FreeBSD, The FreeBSD Foundation, and The FreeBSD Forums are not associated with the content of this article.

 

[cracauer@]

Just repeating a word of warning that came up on the forums before:

Do not raidz-expand your boot pool. The bootloader cannot read the format that the pool has afterwards.

 

[Michael-O]

Just repeating a word of warning that came up on the forums before:

Do not raidz-expand your boot pool. The bootloader cannot read the format that the pool has afterwards.

Why so?

 

[cracauer@]

Why so?

The code to read a post-expansion zpool is relatively complicated and nobody has put a copy into the bootloader yet.