[dm-devel] Re: [PATCH 7/9] scsi_dh: Add support for SDEV_PASSIVE

[Chandra Seetharaman]

On Mon, 2008-02-04 at 12:58 -0600, James Bottomley wrote:
> On Wed, 2008-01-23 at 16:32 -0800, Chandra Seetharaman wrote:
> > Subject: scsi_dh: Add support for SDEV_PASSIVE
> > 
> > From: Chandra Seetharaman <sekharan at us.ibm.com>
> > 
> > This patch adds a new device state SDEV_PASSIVE, to correspond to the
> > passive side access of an active/passive multipathed device.
> 
> Really, no; this isn't right.  The state field of a SCSI device is for
> the SCSI state model.  Passive might be a valid device mapper state, but

Hi James,

It is not the "device mapper state", it is the state of the device
itself. These devices have active/passive paths, the passive paths will
be represented by SDEV_PASSIVE device state in SCSI.

chandra
> it's not a valid SCSI state.  If these patches can't work except by
> mucking with the SCSI state model, there's some layering problem
> elsewhere that needs sorting out.
> 
> James
> 
> 
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-- 

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    Chandra Seetharaman               | Be careful what you choose....
              - sekharan at us.ibm.com   |      .......you may get it.
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