From: Christoph Hellwig <hch@lst.de>
To: qemu-devel@nongnu.org
Cc: john cooper <john.cooper@redhat.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Anthony Liguori <aliguori@us.ibm.com>,
Rusty Russell <rusty@rustcorp.com.au>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: [Qemu-devel] future of the virtio-blk serial number support
Date: Thu, 28 Jan 2010 13:43:27 +0100 [thread overview]
Message-ID: <20100128124327.GA32288@lst.de> (raw)
Back iSeptember 2007 Michael made the serial number support in qemu
optional and off by default, and in October 2009 Rusty reverted the
Linux virtio-blk support for it. Given that I can't find support in
any other virtio implementation that makes the feature look essentially
dead.
How should we proceed with adding more fields to struct virtio_blk_config?
I would suggest removing the identity field, declaring
VIRTIO_BLK_F_IDENTIFY officially deprecated and adding the new fields
directly after blk_size again, maybe with a comment that these new
features can't be advertized together with VIRTIO_BLK_F_IDENTIFY.
I need to add a new optiomal_io_size field soon to support the block
topology information when using virtio which is quite important when
using RAID arrays as backend, and I'd prefer to do it in a way that's
compatibly with the PCI spec.
next reply other threads:[~2010-01-28 12:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-28 12:43 Christoph Hellwig [this message]
2010-01-28 13:50 ` [Qemu-devel] Re: future of the virtio-blk serial number support Michael S. Tsirkin
2010-01-28 14:09 ` Anthony Liguori
2010-01-28 16:38 ` john cooper
2010-01-28 20:59 ` Rusty Russell
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