Thanks, the whole iSCSI LUN have been passed to the VM. But I test it with scsicmd, and found that the driver may be not support SPC-3, but if i use this by microsoft iscsi initiator, I can pass all the scsi3_test tests.
Tool can be found here: http://www.symantec.com/business/support/index?page=content&id=TECH72086 It's this means that the scsi passthrough windows driver does not support SPC-3 feature, I have read a post about this, it says if support this we should change both the implementation and the documents in virtio spec. I am new to this list, so I don't know what is the situation right now? Would somebody please give me some advise on it? On Tue, Aug 20, 2013 at 6:49 PM, Paolo Bonzini <pbonz...@redhat.com> wrote: > Il 20/08/2013 12:42, Timon Wang ha scritto: >> [root@localhost /]# ls -l /dev/VM-IMAGES-BACKUP-DO-NOT-REMOVE/q_disk >> lrwxrwxrwx. 1 root root 8 8月 20 17:38 >> /dev/VM-IMAGES-BACKUP-DO-NOT-REMOVE/q_disk -> ../dm-13 >> [root@localhost /]# sg_inq /dev/VM-IMAGES-BACKUP-DO-NOT-REMOVE/q_disk >> standard INQUIRY: >> PQual=0 Device_type=0 RMB=0 version=0x05 [SPC-3] >> [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=0 >> SCCS=1 ACC=0 TPGS=1 3PC=0 Protect=0 [BQue=0] >> EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0 >> [RelAdr=0] WBus16=1 Sync=1 Linked=0 [TranDis=0] CmdQue=1 >> length=36 (0x24) Peripheral device type: disk >> Vendor identification: MacroSAN >> Product identification: LU >> Product revision level: 1.0 >> Unit serial number: 0d9281ae-aea4-6da0-0000-02180142b300 >> >> This lun is from a vg build based on iscsi target. > > If it is a logical volume, you cannot pass it as a LUN to the guest. > Only the whole iSCSI LUN can be passed as a LUN. > > Paolo > >> [root@localhost /]# libvirtd --version >> libvirtd (libvirt) 1.0.5 >> [root@localhost /]# qemu-kvm --version >> QEMU emulator version 1.4.1, Copyright (c) 2003-2008 Fabrice Bellard >> [root@localhost /]# uname -a >> Linux localhost.localdomain 3.9.2-301.fc19.x86_64 #1 SMP Mon May 13 >> 12:36:24 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux >> >> >> On Tue, Aug 20, 2013 at 6:16 PM, Paolo Bonzini <pbonz...@redhat.com> wrote: >>> Il 20/08/2013 11:59, Timon Wang ha scritto: >>>> On Tue, Aug 20, 2013 at 4:33 PM, Paolo Bonzini <pbonz...@redhat.com> wrote: >>>>> Il 20/08/2013 08:00, Timon Wang ha scritto: >>>>>> <disk type='file' device='disk'> >>>>>> <driver name='qemu' type='raw' cache='none'/> >>>>>> <source file='/home/images/win2008_2_sys'/> >>>>>> <target dev='hda' bus='ide'/> >>>>>> <boot order='3'/> >>>>>> <address type='drive' controller='0' bus='0' target='0' unit='0'/> >>>>>> </disk> >>>>>> <disk type='file' device='cdrom'> >>>>>> <driver name='qemu' type='raw'/> >>>>>> <source file='/home/isos/windows2008_64r2.iso'/> >>>>>> <target dev='sdc' bus='ide'/> >>>>>> <readonly/> >>>>>> <boot order='1'/> >>>>>> <address type='drive' controller='0' bus='1' target='0' unit='0'/> >>>>>> </disk> >>>>>> <disk type='block' device='disk'> >>>>> >>>>> I'm not sure this will be enough, but if you want passthrough to the >>>>> host device you should use device='lun' here. However, you still would >>>>> not be able to issue SCSI reservations unless you run QEMU with the >>>>> CAP_SYS_RAWIO capability (using "<disk ... rawio='yes'>"). >>>>> >>>> >>>> After change the libvirt xml like this: >>>> <disk type='block' device='lun' rawio='yes'> >>>> <driver name='qemu' type='raw' cache='none'/> >>>> <source dev='/dev/VM-IMAGES-BACKUP-DO-NOT-REMOVE/q_disk'/> >>>> <target dev='sda' bus='scsi'/> >>>> <shareable/> >>>> <address type='drive' controller='0' bus='0' target='0' unit='0'/> >>>> </disk> >>>> I got these errors: >>>> char device redirected to /dev/pts/1 (label charserial0) >>>> qemu-system-x86_64: -device >>>> scsi-block,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0: >>>> scsi-block: INQUIRY failed >>>> qemu-system-x86_64: -device >>>> scsi-block,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0: >>>> Device 'scsi-block' could not be initialized >>> >>> Can you do >>> >>> # ls -l /dev/VM-IMAGES-BACKUP-DO-NOT-REMOVE/q_disk >>> # sg_inq /dev/VM-IMAGES-BACKUP-DO-NOT-REMOVE/q_disk >>> >>> ? >>> >>> Paolo >>> >> >> >> > -- Focus on: Server Vitualization, Network security,Scanner,NodeJS,JAVA,WWW Blog: http://www.nohouse.net -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
