Re: btrfs raid1 and btrfs raid10 arrays NOT REDUNDANT

Duncan
2014-01-04T20:09:25Z

Chris Mason posted on Sat, 04 Jan 2014 14:51:23 +0000 as excerpted:

> It'll pick the latest generation number and use that one as the one true
> source. For the others you'll get crc errors which make it fall back to
> the latest one. If the two have exactly the same generation number,
> we'll have a hard time picking the best one.
>
> Ilya has a series of changes from this year's GSOC that we need to clean
> up and integrate. It detects offline devices and brings them up to date
> automatically.
>
> He targeted the pull-one-drive use case explicitly.

Thanks for the explanation and bits to look forward to.

I'll be looking forward to seeing that GSOC stuff then, as having
dropouts and re-adds auto-handled would be a sweet feature to add to the
raid featureset, improving things from a sysadmin's prepared-to-deal-with-
recovery perspective quite a bit. =:^)

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