Re: [PATCH 0/4] (RESEND) ext3[34] barrier changes

[Jamie Lokier]

Ric Wheeler wrote:
> The hard thing is to figure out how to test this kind of scenario 
> without dropping power.

Apart from using virtual machines, you mean?

> To expose the failure mode, it might be 
> sufficient to drop power to a drive with smartctl (or, if you have hot 
> swap bays, just pull them).

I wonder, does sending any kind of reset commands to drives cause them
to discard their write cache?

If the hot swap power switch is accessible from software, that would
be a nice trick :-)

-- Jamie
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