From: "Michael S. Tsirkin" <mst@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Christian Hoff <christian.hoff@de.ibm.com>,
linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
rusty@rustcorp.com.au, kvm@vger.kernel.org
Subject: Re: Pe: [PATCH v5 1/3] virtio-scsi: first version
Date: Tue, 7 Feb 2012 13:10:41 +0200 [thread overview]
Message-ID: <20120207111041.GA6674@redhat.com> (raw)
In-Reply-To: <4F30F4EE.4080607@redhat.com>
On Tue, Feb 07, 2012 at 10:54:54AM +0100, Paolo Bonzini wrote:
> >Also, lun[1] = sc->device->id means that only 255 SCSI target IDs will be
> >supported. Think about bigger usage scenarios, such as FCP networks with
> >several hundred HBAs in the net. If you want to have the target ID<->HBA
> >mapping the same as on the guest as on the host, then 255 virtual target
> >IDs could be a limit.
>
> I think you would hit other scalability limitations well before
> that. I plan to give each target its own MSI-X interrupt, but there
> is no infinite supplies of those either.
virtio-pci generally lets guests share MSI-X vectors between queues,
why not allow this here?
--
MST
next prev parent reply other threads:[~2012-02-07 11:10 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-06 9:51 Pe: [PATCH v5 1/3] virtio-scsi: first version Christian Hoff
2012-02-06 9:51 ` Christian Hoff
2012-02-07 9:54 ` Paolo Bonzini
2012-02-07 11:10 ` Michael S. Tsirkin [this message]
2012-02-07 11:26 ` Paolo Bonzini
2012-02-07 11:56 ` Christian Borntraeger
2012-02-07 12:31 ` Paolo Bonzini
2012-02-07 13:18 ` Christian Borntraeger
2012-02-07 13:59 ` Christian Hoff
2012-02-07 13:59 ` Christian Hoff
2012-02-07 14:28 ` Paolo Bonzini
2012-02-08 13:37 ` Christian Hoff
2012-02-08 13:37 ` Christian Hoff
2012-02-09 9:25 ` Paolo Bonzini
2012-02-09 12:18 ` Christian Hoff
2012-02-12 20:16 ` James Bottomley
2012-02-12 23:41 ` Rusty Russell
2012-02-13 7:05 ` Christian Borntraeger
2012-02-13 7:57 ` Dor Laor
2012-02-13 12:40 ` Nicholas A. Bellinger
2012-02-13 12:54 ` Dor Laor
2012-02-13 13:00 ` Michael S. Tsirkin
2012-02-13 13:13 ` ronnie sahlberg
2012-02-13 13:17 ` Paolo Bonzini
2012-02-13 13:18 ` Michael S. Tsirkin
2012-02-13 15:12 ` Hannes Reinecke
2012-02-13 20:42 ` ronnie sahlberg
2012-02-13 20:53 ` ronnie sahlberg
2012-02-13 22:59 ` Michael S. Tsirkin
2012-02-13 23:30 ` ronnie sahlberg
2012-02-13 23:33 ` Michael S. Tsirkin
2012-02-14 0:49 ` ronnie sahlberg
2012-02-14 0:49 ` ronnie sahlberg
2012-02-14 1:11 ` Michael S. Tsirkin
2012-02-14 9:57 ` Paolo Bonzini
2012-02-13 11:08 ` Bart Van Assche
2012-02-13 9:19 ` Paolo Bonzini
2012-02-14 0:07 ` Rusty Russell
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