[OpenIndiana-discuss] Scrub on single ZFS volume

[Bob Friesenhahn]

On Mon, 23 Oct 2023, Michelle wrote:
>
> OK - so basically, even though it can't repair damage, (as there is no
> parity) at least it can flag up that checksums didn't check.

I just noticed this email now.  In addition to ordinary user file 
data, zfs stores redundant metadata so if a bit of the metadata is 
corrupt, it may be able to repair it using a good copy.  This is a 
reason to still scrub single-disk pools.

A reason to scrub single-disk pools periodically is to help discover 
when the disk is going bad so it can be replaced before there is much 
data loss.

Bob
-- 
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
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