RE: [Fedora-xen] Exporting "SD" device.

[You, Yongkang]

Priya, 

 

HVM QEMU doesn’t support emulate SCSI device. So you have to use the IDE device. Your
first configuration is correct.

 

Best Regards,

Yongkang (Kangkang) 永康

________________________________

From: fedora-xen-bounces(a)redhat.com [mailto:[e-mail]] On Behalf Of P
M, Priya
Sent: 2006年6月14日 3:05
To: fedora-xen(a)redhat.com
Subject: [Fedora-xen] Exporting "SD" device.

 

Hi,

 

We have Intel VT enabled system loaded with Xen 3.0.2 and qemu based FC5+linux 2.6.16 as a
guest operating system. We want to export the disk to the domain 1 (FC5_linux 2.6.16) as
"SD" device. But we are not able to export the SCSI disk as a SD device, we
could export as a "HD" device. 

 

In the Configuration file, 

disk = [
'file:/home/adteam/linux_fc5_2.6.16,ioemu:hda,w','phy:/dev/sdd,ioemu:hdb,w'
]

if we use ioemu:hdb, then the device is exported to the domain 1 and we could see the
device.

If we use

disk = [
'file:/home/adteam/linux_fc5_2.6.16,ioemu:hda,w','phy:/dev/sdd,/dev/sdb,w'
] 

/dev/sdb, then the device is not seen on domain 1. 

Are we missing something. Is it not possible to export an SD device to domain 1? Is there
any limitiation in qemu based domain 1, because our domain 0 is qemu based operating
system.

Is there any performance difference between "hda" and "sda" exported
devices??? 

Thanks.