Konrad Wrote:
> On Mon, Oct 27, 2008 at 10:11:28AM -0500,
Yanqing_Liu@xxxxxxxx wrote:
> > Hi,
> >
> > This
patch adds a check for removed device in rdac checker. After
> > volume
access inquiry returns, the checker will check the peripheral
> >
qualifier field to see if the device is deleted/unmapped. If so, mark
>
> path as failed.
> How does multipathd behaves when this fix is
not in? Does it still mark the path down? I would presume so, but it would take
longer (the default SCSI timeout value?)
Absolutely. But that would
also be after some IOs on the failed path and the device being marked offline.
Instead if the controller device is intelligent to support a feature to know if
the path is down through an inquiry then it is worth marking the path down
earlier.
Thanks for reviewing.
-Shyam Iyer.
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