Re: Rebalancing raid1 after adding a device

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On Tue, Jun 18, 2019 at 12:50 PM Austin S. Hemmelgarn
<ahferroin7@xxxxxxxxx> wrote:
>
> On 2019-06-18 14:45, Hugo Mills wrote:
> >     -dlimit=100 will only move 100 GiB of data (i.e. 200 GiB), so it'll
> > be a pretty limited change. You'll need to use a larger number than
> > that if you want it to have a significant visible effect.
> Last I checked, that's not how the limit filter works.  AFAIUI, it's an
> upper limit on how full a chunk can be to be considered for the balance
> operation.  So, balancing with only `-dlimit=100` should actually
> balance all data chunks (but only data chunks, because you haven't asked
> for metadata balancing).

You're thinking of -dusage filter, which is what I mostly use, and is
a percentage value (or a range), whereas the limit filter is a
quantity of block groups, or a range.

-- 
Chris Murphy



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