Christian Auby wrote:
ZFS is able to detect corruption thanks to checksumming, but for single drives
(regular folk-pcs) it doesn't help much unless it can correct them. I've been
searching and can't find anything on the topic, so here goes:
1. Can ZFS do parity data on a single drive? e.g. x% parity for all writes,
recover on checksum error.
2. If not, why not? I imagine it would have been a killer feature.
I guess you could possibly do it by partitioning the single drive and running
raidz(2) on the partitions, but that would lose you way more space than e.g.
10%. Also not practical for OS drive.
You are describing the copies parameter. It really helps to describe
it in pictures, rather than words. So I did that.
http://blogs.sun.com/relling/entry/zfs_copies_and_data_protection
-- richard
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