[stgt] [Patch 1/1] Add support for passthrough LUNs

[Alexander Nezhinsky]

On Mon, Aug 18, 2008 at 8:44 PM, Arne Redlich <agr at powerkom-dd.de> wrote:
> Am Montag, den 18.08.2008, 16:11 +1000 schrieb ronnie sahlberg:
>>
>> This patch adds support for passthrough devices to tgtd.
>> Please review/apply.
>
> Hi Ronnie,
>
> there used to be a passthrough handler - it was removed due to its
> "brokeness" (anything else besides the TMF and I_T nexus mapping
> issues?), but the commit message suggests that it [cs]hould serve as a
> starting point?
>
> http://git.kernel.org/?p=linux/kernel/git/tomo/tgt.git;a=commitdiff;h=59e4aee0796783b765e9cc5748b8f4c7efe934eb
>

Hi,

Could you explain why both the old pass-through handler and the new
proposed one
implement a separate device type (in addition to a new backing store)?
Why having just a separate backing store is not enough?

We don't really introduce a new scsi device type here, do we?
It is about the way the scsi commands are delivered to the storage, so
just having
a new backing store would suffice. Do i miss something?

Alexander Nezhinsky
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