From: Paolo Bonzini <pbonzini@redhat.com>
To: Christoph Hellwig <hch@lst.de>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [RFC PATCH 3/6] scsi-generic: allow customization of the lun
Date: Fri, 27 May 2011 15:31:25 +0200 [thread overview]
Message-ID: <4DDFA7AD.50809@redhat.com> (raw)
In-Reply-To: <20110527130423.GA20998@lst.de>
On 05/27/2011 03:04 PM, Christoph Hellwig wrote:
> Requiring this code in the scsi drivers is a really bad idea. Not only
> does it mean duplicating the implementation of REPORT LUNS and the illegal
> LUN version of INQUIRY in every scsi LUN handler and the target driver,
> but also an inconsitent topology of the qemu-internal objects representing
> the SCSI implementation, which is a pretty clear path to all kinds of nast
> bugs only showing up for the legacy case some time down the road.
>
> The right way to solve this is to make sure we always have the proper
> target object by creating it under the hood for the legacy case.
I know, but this requires changes to the basic qdev layer so I planned
to do this later. Also because for bisectability, to avoid dropping a
huge patch, I first need to work around the legacy cases and then kill them.
Paolo
next prev parent reply other threads:[~2011-05-27 13:31 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-20 15:03 [Qemu-devel] [RFC PATCH 0/6] SCSI series part 2, rewrite LUN parsing Paolo Bonzini
2011-05-20 15:03 ` [Qemu-devel] [RFC PATCH 1/6] scsi: ignore LUN field in the CDB Paolo Bonzini
2011-05-20 16:15 ` Christoph Hellwig
2011-05-20 15:03 ` [Qemu-devel] [RFC PATCH 2/6] scsi: support parsing of SAM logical unit numbers Paolo Bonzini
2011-05-25 13:05 ` Christoph Hellwig
2011-05-20 15:03 ` [Qemu-devel] [RFC PATCH 3/6] scsi-generic: allow customization of the lun Paolo Bonzini
2011-05-25 13:10 ` Christoph Hellwig
2011-05-25 15:20 ` Paolo Bonzini
2011-05-27 13:04 ` Christoph Hellwig
2011-05-27 13:31 ` Paolo Bonzini [this message]
2011-05-20 15:03 ` [Qemu-devel] [RFC PATCH 4/6] scsi-disk: " Paolo Bonzini
2011-05-25 13:13 ` Christoph Hellwig
2011-05-20 15:03 ` [Qemu-devel] [RFC PATCH 5/6] scsi: let a SCSIDevice have children devices Paolo Bonzini
2011-05-20 15:03 ` [Qemu-devel] [RFC PATCH 6/6] scsi: add walking of hierarchical LUNs Paolo Bonzini
2011-05-20 16:14 ` [Qemu-devel] [RFC PATCH 0/6] SCSI series part 2, rewrite LUN parsing Christoph Hellwig
2011-05-20 17:37 ` Paolo Bonzini
2011-05-25 13:17 ` Christoph Hellwig
2011-05-25 15:08 ` Paolo Bonzini
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