RE: copy offload support in Linux - new system call needed?

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Subject: RE: copy offload support in Linux - new system call needed?
From: "Loke, Chetan" <Chetan.Loke@xxxxxxxxxxxx>
Date: Thu, 15 Dec 2011 12:31:28 -0500
Cc: "J. Bruce Fields" <bfields@xxxxxxxxxxxx>, "Al Viro" <viro@xxxxxxxxxxxxxxxxxx>, <linux-scsi@xxxxxxxxxxxxxxx>, "linux-fsdevel" <linux-fsdevel@xxxxxxxxxxxxxxx>, "Hannes Reinecke" <hare@xxxxxxx>, "Andrew Morton" <akpm@xxxxxxxxxxxxxxxxxxxx>, <linux-nfs@xxxxxxxxxxxxxxx>, "Joel Becker" <jlbec@xxxxxxxxxxxx>, "James Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
In-reply-to: <4EEA2BF7.5030107@gmail.com>
References: <4EE8F75F.6070800@gmail.com> <20111214192739.GN2203@ZenIV.linux.org.uk> <4EE8FC2E.3010207@gmail.com> <20111214222723.GD7623@fieldses.org> <1323961140.14317.2.camel@lade.trondhjem.org> <D3F292ADF945FB49B35E96C94C2061B91516E391@nsmail.netscout.com> <1323965498.14317.13.camel@lade.trondhjem.org> <D3F292ADF945FB49B35E96C94C2061B91516E3FC@nsmail.netscout.com> <1323968015.14317.28.camel@lade.trondhjem.org> <4EEA2BF7.5030107@gmail.com>
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Thread-topic: copy offload support in Linux - new system call needed?

> 
> I think that hypervisor vendors will be very interested in this feature
> which
> would explain why vmware was active in drafting both the NFS and T10

Specs are the only way to convince storage-target-vendors ;). Otherwise target-stack will need to implement multiple custom-CDB-handlers for different front-end APIs(which is ugly).


Chetan



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