Re: 'Device not ready' issue on mpt2sas since 3.1.10

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On 07/25/2012 07:56 PM, Matthias Prager wrote:
> 
> I don't yet understand all the code but I'm following your discussion
> with Tejun: I've set up a minimal vm running gentoo with a mpt2sas
> driven controller in passthrough mode. I've applied your proposed patch
> against the vanilla 3.5.0 kernel (which includes Tejun's commit), and
> I'm happy to report the problem does seem to get fixed by it.

I can confirm this on my hardware as well with both 3.4.4 and 3.5.0.
Without James' patch the kernels will immediately drop the I/O and with
the patch both kernels will wake the SATA disks and then complete the
I/O successfully.

-- Robert
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