Re: [PATCH 0/15] copy offload patches

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On Thu, 10 Dec 2015, Martin K. Petersen wrote:

> >>>>> "Mikulas" == Mikulas Patocka <mpatocka@xxxxxxxxxx> writes:
> 
> Mikulas,
> 
> Mikulas> This patch series adds copy offload (the XCOPY command) to the
> Mikulas> block layer, SCSI subsystems and device mapper.
> 
> Now that the VFS stuff appears to stabilize I agree it's a good time to
> revisit all this. I just merged the required VPD patches from Hannes so
> those will be in 4.5.
> 
> I have a bunch of changes to the SCSI code that I worked on over the
> spring/summer based on a feedback from the array vendors after
> discussions we started at LSF/MM. Generally speaking, their comments
> didn't make things easier, nor prettier :( But your two bio approach is
> a requirement to accommodate those needs (token-based copy) so I'll work
> on consolidating your changes with mine.

Let me know when you make some progress with that.

Is there some software iSCSI implementation that supports token-based 
copy? So that I could try to make support for it.

Mikulas

> That said, we still need Mike Christie's patches to go in first.
> 
> Mike: What's your status? I'm afraid I didn't get a chance to dig very
> deep in your series since it coincided with me scrambling to sort out
> SCSI for 4.4. Do you think there's a chance we could get your patches in
> shape for 4.5? Is there an up-to-date tree I can look at?
> 
> -- 
> Martin K. Petersen	Oracle Linux Engineering

Mikulas
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