[libvirt-users] Oracle RAC in libvirt+KVM environment

[Timon Wang]

[root at 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 at 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.

[root at localhost /]# libvirtd --version
libvirtd (libvirt) 1.0.5
[root at localhost /]# qemu-kvm --version
QEMU emulator version 1.4.1, Copyright (c) 2003-2008 Fabrice Bellard
[root at 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 <pbonzini at redhat.com> wrote:
> Il 20/08/2013 11:59, Timon Wang ha scritto:
>> On Tue, Aug 20, 2013 at 4:33 PM, Paolo Bonzini <pbonzini at 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