Re: Bug report: mdadm -E oddity

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berk walker wrote:
> Peter -
> for us old folks, please expand "idempotent" in usage to reflect the
> relationships to which you refer.

In common usage, an operation is idempotent when it is provably safely
repeatable.  Another way to say it is that you can repeat an idempotent
operation without side effects.

In the context of this conversation, Peter is asking that Doug prove
that the write can be repeated on restart without corrupting the state
of the RAID array.

--Gil
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