* [RFC] Can DM pass SCSI command to path now?
@ 2018-08-16 11:56 ` Changwei Ge
0 siblings, 0 replies; 4+ messages in thread
From: Changwei Ge @ 2018-08-16 11:56 UTC (permalink / raw)
To: dm-devel, linux-block; +Cc: ge.changwei, liu.cong, changlimin
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [RFC] Can DM pass SCSI command to path now?
@ 2018-08-16 11:56 ` Changwei Ge
0 siblings, 0 replies; 4+ messages in thread
From: Changwei Ge @ 2018-08-16 11:56 UTC (permalink / raw)
To: dm-devel, linux-block; +Cc: liu.cong, ge.changwei, changlimin
Hi list,
Recently, I found that block request can't take SCSI CDB any more.
So, can we still pass SCSI command to DM device which will clone the
request and transfer it real path?
Otherwise, we query current path of DM each time before issuing a SCSI
command?
Thanks,
Changwei
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [RFC] Can DM pass SCSI command to path now?
2018-08-16 11:56 ` Changwei Ge
@ 2018-08-17 7:35 ` Christoph Hellwig
-1 siblings, 0 replies; 4+ messages in thread
From: Christoph Hellwig @ 2018-08-17 7:35 UTC (permalink / raw)
To: Changwei Ge; +Cc: dm-devel, linux-block, ge.changwei, liu.cong, changlimin
On Thu, Aug 16, 2018 at 11:56:48AM +0000, Changwei Ge wrote:
> Hi list,
>
> Recently, I found that block request can't take SCSI CDB any more.
>
> So, can we still pass SCSI command to DM device which will clone the
> request and transfer it real path?
You never could before, as the infrastructure was always missing.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [RFC] Can DM pass SCSI command to path now?
@ 2018-08-17 7:35 ` Christoph Hellwig
0 siblings, 0 replies; 4+ messages in thread
From: Christoph Hellwig @ 2018-08-17 7:35 UTC (permalink / raw)
To: Changwei Ge; +Cc: linux-block, liu.cong, dm-devel, changlimin, ge.changwei
On Thu, Aug 16, 2018 at 11:56:48AM +0000, Changwei Ge wrote:
> Hi list,
>
> Recently, I found that block request can't take SCSI CDB any more.
>
> So, can we still pass SCSI command to DM device which will clone the
> request and transfer it real path?
You never could before, as the infrastructure was always missing.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2018-08-17 10:37 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-08-16 11:56 [RFC] Can DM pass SCSI command to path now? Changwei Ge
2018-08-16 11:56 ` Changwei Ge
2018-08-17 7:35 ` Christoph Hellwig
2018-08-17 7:35 ` Christoph Hellwig
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