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From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Teoh <htmldeveloper@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] How to modify QEMU source to read the bus for SATA directly?
Date: Thu, 16 Apr 2015 16:39:06 +0200	[thread overview]
Message-ID: <552FC98A.7080000@redhat.com> (raw)
In-Reply-To: <CAHnt0GWxnDK-b9GSnmDfH=b1hXQt=YOUt4MsrF_67Qpz-bV2sw@mail.gmail.com>



On 16/04/2015 16:26, Peter Teoh wrote:
> 
>     You can use PCI passthrough and let the guest use the whole SATA bus, if
>     you have another way to access other disks on the same bus (e.g. boot
>     from a USB stick or access the filesystems on NFS).
> 
>     Or you can use SCSI passthrough and pass the /dev/sdX device to the
>     guest, e.g.
> 
>         -device virtio-scsi-pci
>         -drive if=none,file=/dev/sdb,id=sdb,cache=none,format=raw
>         -device scsi-block,drive=sdb
> 
>     The guest then will talk to the host's ATA->SCSI translation layer, and
>     will be able to send raw ATA commands via the ATA PASSTHROUGH command.
> 
> Thank you very much, that answer saved me many hours of search/trial and
> errors.   And seems to work for now...need more testing.

FWIW, which one did you use and what kind of command did you need?

Paolo

      reply	other threads:[~2015-04-16 14:39 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-16 13:25 [Qemu-devel] How to modify QEMU source to read the bus for SATA directly? Peter Teoh
2015-04-16 13:43 ` Paolo Bonzini
2015-04-16 14:26   ` Peter Teoh
2015-04-16 14:39     ` Paolo Bonzini [this message]

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