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From: David Vrabel <david.vrabel@citrix.com>
To: Arianna Avanzini <avanzini.arianna@gmail.com>,
	konrad.wilk@oracle.com, boris.ostrovsky@oracle.com,
	xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org
Cc: axboe@fb.com, felipe.franciosi@citrix.com
Subject: Re: [PATCH RFC 4/4] xen, blkback: add support for multiple block rings
Date: Fri, 22 Aug 2014 14:15:58 +0100	[thread overview]
Message-ID: <53F7428E.90806__9143.173977691$1408713496$gmane$org@citrix.com> (raw)
In-Reply-To: <1408706404-6614-5-git-send-email-avanzini.arianna@gmail.com>

On 22/08/14 12:20, Arianna Avanzini wrote:
> This commit adds to xen-blkback the support to retrieve the block
> layer API being used and the number of available hardware queues,
> in case the block layer is using the multi-queue API. This commit
> also lets the driver advertise the number of available hardware
> queues to the frontend via XenStore, therefore allowing for actual
> multiple I/O rings to be used.

Does it make sense for number of queues should be dependent on the
number of queues available in the underlying block device?  What
behaviour do we want when a domain is migrated to a host with different
storage?

Can you split this patch up as well?

David

  parent reply	other threads:[~2014-08-22 13:16 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-22 11:20 [PATCH RFC 0/4] Multi-queue support for xen-blkfront and xen-blkback Arianna Avanzini
2014-08-22 11:20 ` [PATCH RFC 1/4] xen, blkfront: add support for the multi-queue block layer API Arianna Avanzini
2014-08-22 12:25   ` David Vrabel
2014-08-22 15:03     ` Christoph Hellwig
2014-08-22 15:03     ` Christoph Hellwig
2014-08-22 12:25   ` David Vrabel
2014-08-22 15:02   ` Christoph Hellwig
2014-09-11 23:54     ` Arianna Avanzini
2014-09-11 23:54     ` Arianna Avanzini
2014-08-22 15:02   ` Christoph Hellwig
2014-08-22 11:20 ` Arianna Avanzini
2014-08-22 11:20 ` [PATCH RFC 2/4] xen, blkfront: factor out flush-related checks from do_blkif_request() Arianna Avanzini
2014-08-22 11:20 ` Arianna Avanzini
2014-08-22 12:45   ` David Vrabel
2014-08-22 12:45   ` David Vrabel
2014-08-22 11:20 ` [PATCH RFC 3/4] xen, blkfront: introduce support for multiple hw queues Arianna Avanzini
2014-08-22 12:52   ` David Vrabel
2014-08-22 12:52   ` David Vrabel
2014-09-11 23:36     ` Arianna Avanzini
2014-09-12 10:50       ` David Vrabel
2014-09-12 10:50       ` David Vrabel
2014-09-11 23:36     ` Arianna Avanzini
2014-08-22 11:20 ` Arianna Avanzini
2014-08-22 11:20 ` [PATCH RFC 4/4] xen, blkback: add support for multiple block rings Arianna Avanzini
2014-08-22 13:15   ` David Vrabel
2014-09-11 23:45     ` Arianna Avanzini
2014-09-11 23:45     ` Arianna Avanzini
2014-09-12  3:13       ` Bob Liu
2014-09-12  3:13       ` Bob Liu
2014-09-12 10:24       ` David Vrabel
2014-09-12 10:24       ` David Vrabel
2014-08-22 13:15   ` David Vrabel [this message]
2014-08-22 11:20 ` Arianna Avanzini
2014-09-15  9:23 ` [Xen-devel] [PATCH RFC 0/4] Multi-queue support for xen-blkfront and xen-blkback Roger Pau Monné
2014-09-15  9:23 ` Roger Pau Monné

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