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Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device |
Date: |
Mon, 18 Apr 2011 18:09:42 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc14 Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.7 |
On 04/18/2011 04:05 PM, Hannes Reinecke wrote:
My proposal would be to implement a full virtio-scsi _host_, and extend
the proposal to be able to handle the transport layer too.
Yes, I have added this independently from Friday to today, and it is why
I haven't sent the proposal yet.
At the lastest we would need to include a LUN address before the CDB,
and define TMF command values for proper error recovery.
I haven't yet worked out TMF, but I did add a LUN.
That way we could handle hotplug / -unplug via a simple host rescan
It's a bit more complicated because you also want guest-initiated
unplug, and SAM transport reset events include more than hotplug/unplug.
I couldn't find that in either SPC or SAM indeed. It seems like a
pretty widespread assumption though. Perhaps Nicholas or Hannes know
where it comes from.
96 bytes is a carry-over from scsi parallel. We shouldn't rely
on a fixed length here but rather use an additional pointer/iovec and
length field.
Check SG_IO header on how it's done.
Will do.
Paolo
- [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Paolo Bonzini, 2011/04/15
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Stefan Hajnoczi, 2011/04/15
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Paolo Bonzini, 2011/04/15
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Stefan Hajnoczi, 2011/04/15
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Paolo Bonzini, 2011/04/15
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Stefan Hajnoczi, 2011/04/15
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Paolo Bonzini, 2011/04/15
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Hannes Reinecke, 2011/04/18
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Stefan Hajnoczi, 2011/04/18
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device,
Paolo Bonzini <=
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Hannes Reinecke, 2011/04/15
- Re: [Qemu-devel] [RFC PATCH] implement vmware pvscsi device, Paolo Bonzini, 2011/04/15