Do I need to enable local caching to use shareable VDIs?
On Thu, May 24, 2012 at 7:36 AM, George Shuklin <george.shuk...@gmail.com>wrote:
> Local caching?
>
> On 24.05.2012 14:25, Carlos Eduardo Tavares Terra wrote:
>
> Anyone has any clue about that?
>
> I really don't know what is missing in SR to support shareable VDIs....
>
> On Sat, May 19, 2012 at 11:17 PM, Carlos Eduardo Tavares Terra <
> eduardo.te...@gmail.com> wrote:
>
>> I tried to execute the vdi-set-shareable-true.py script, that i have
>> found in the forum. But the result was not positive. I
>> got SR_OPERATION_NOT_SUPPORTED error.
>>
>> [root@vmserver05 ~]# ./vdi-set-shareable-true.py -v
>> 31e3186c-367f-4a87-b591-56844bb23420
>> FULL VDI entry = OpaqueRef:fda5a983-f234-c147-3ec9-99a20dfa76c7
>> {'sm_config': {'vdi_type': 'vhd'}, 'managed': True, 'snapshots': [],
>> 'allowed_operations': ['resize_online', 'generate_config', 'resize',
>> 'destroy', 'clone', 'copy'], 'on_boot': 'persist', 'name_description': '',
>> 'read_only': False, 'uuid': '31e3186c-367f-4a87-b591-56844bb23420',
>> 'storage_lock': False, 'name_label': 'teste', 'tags': [], 'location':
>> '31e3186c-367f-4a87-b591-56844bb23420', 'type': 'user', 'sharable': True,
>> 'snapshot_time': <DateTime u'19700101T00:00:00Z' at -491c56b4>, 'parent':
>> 'OpaqueRef:NULL', 'missing': False, 'xenstore_data': {'storage-type':
>> 'lvm', 'scsi/0x12/0x80': 'AIAAEjMxZTMxODZjLTM2N2YtNGEgIA==',
>> 'scsi/0x12/0x83':
>> 'AIMAMQIBAC1YRU5TUkMgIDMxZTMxODZjLTM2N2YtNGE4Ny1iNTkxLTU2ODQ0YmIyMzQyMCA=',
>> 'vdi-type': 'vhd', 'vdi-uuid': '31e3186c-367f-4a87-b591-56844bb23420'},
>> 'crash_dumps': [], 'virtual_size': '1073741824', 'is_a_snapshot': False,
>> 'current_operations': {}, 'snapshot_of': 'OpaqueRef:NULL', 'SR':
>> 'OpaqueRef:439cb0a4-8f5e-eba1-6eaa-f2d7ec8827a0', 'other_config': {},
>> 'physical_utilisation': '1082130432', 'allow_caching': False, 'VBDs':
>> ['OpaqueRef:9d4f9e82-6b15-101d-3cec-46eea2a47359',
>> 'OpaqueRef:9591ab93-0f12-b1a5-f92e-0817355d9988']}
>>
>> FULL VBD entry = OpaqueRef:9d4f9e82-6b15-101d-3cec-46eea2a47359
>> {'userdevice': '4', 'runtime_properties': {}, 'allowed_operations':
>> ['pause', 'unpause', 'plug', 'attach'], 'VDI':
>> 'OpaqueRef:fda5a983-f234-c147-3ec9-99a20dfa76c7', 'uuid':
>> 'd0a4ac7f-ae94-18b4-926b-628f31cea636', 'storage_lock': False,
>> 'qos_supported_algorithms': [], 'status_code': '0', 'type': 'Disk',
>> 'empty': False, 'VM': 'OpaqueRef:71dd55e9-2e0e-2e4c-bd7d-ece5d9742b3c',
>> 'status_detail': '', 'metrics':
>> 'OpaqueRef:2f6af1e3-fa0c-c438-6765-dc41978066fc', 'device': '',
>> 'qos_algorithm_type': '', 'unpluggable': True, 'current_operations': {},
>> 'bootable': False, 'other_config': {}, 'currently_attached': False, 'mode':
>> 'RW', 'qos_algorithm_params': {}}
>>
>> FULL VBD entry = OpaqueRef:9591ab93-0f12-b1a5-f92e-0817355d9988
>> {'userdevice': '2', 'runtime_properties': {}, 'allowed_operations':
>> ['pause', 'unpause', 'plug', 'attach'], 'VDI':
>> 'OpaqueRef:fda5a983-f234-c147-3ec9-99a20dfa76c7', 'uuid':
>> '81ed397c-48f2-6bc5-c393-1fefc5645f30', 'storage_lock': False,
>> 'qos_supported_algorithms': [], 'status_code': '0', 'type': 'Disk',
>> 'empty': False, 'VM': 'OpaqueRef:a07bf61b-d4bb-ab23-617e-f2d97771ed92',
>> 'status_detail': '', 'metrics':
>> 'OpaqueRef:3c5a3156-0144-ecdb-d07d-0b349a568b87', 'device': 'xvdc',
>> 'qos_algorithm_type': '', 'unpluggable': True, 'current_operations': {},
>> 'bootable': False, 'other_config': {'owner': 'true'}, 'currently_attached':
>> False, 'mode': 'RW', 'qos_algorithm_params': {}}
>>
>> ERROR: failed to re-introduce the VDI. unrecoverable error.
>> Traceback (most recent call last):
>> File "./vdi-set-shareable-true.py", line 132, in ?
>> main()
>> File "./vdi-set-shareable-true.py", line 129, in main
>> fixup_vdi(options, session)
>> File "./vdi-set-shareable-true.py", line 70, in fixup_vdi
>> vdi_data['sm_config'])
>> File "/usr/lib/python2.4/site-packages/XenAPI.py", line 229, in __call__
>> return self.__send(self.__name, args)
>> File "/usr/lib/python2.4/site-packages/XenAPI.py", line 133, in
>> xenapi_request
>> result = _parse_result(getattr(self, methodname)(*full_params))
>> File "/usr/lib/python2.4/site-packages/XenAPI.py", line 203, in
>> _parse_result
>> raise Failure(result['ErrorDescription'])
>> XenAPI.Failure: ['SR_OPERATION_NOT_SUPPORTED',
>> 'OpaqueRef:439cb0a4-8f5e-eba1-6eaa-f2d7ec8827a0']
>>
>>
>>
>> On Sat, May 19, 2012 at 9:17 AM, Carlos Eduardo Tavares Terra <
>> eduardo.te...@gmail.com> wrote:
>>
>>> Mike,
>>>
>>> I have tried to do what you said, but I have got an error.
>>>
>>> My steps:
>>>
>>> [root@vmserver05 ~]# xe sr-param-list
>>> uuid=81a9d5c1-f0a8-ecfb-28b0-59154f2b70df
>>> uuid ( RO) : 81a9d5c1-f0a8-ecfb-28b0-59154f2b70df
>>> name-label ( RW): VMDATA02_RAID10
>>> name-description ( RW): iSCSI SR [172.30.1.101
>>> (iqn.1984-05.com.dell:powervault.md3200i.6782bcb00006b020000000004d41e117)]
>>> host ( RO): <shared>
>>> allowed-operations (SRO): forget; VDI.create; VDI.snapshot; plug;
>>> update; destroy; VDI.destroy; scan; VDI.clone; VDI.resize; unplug
>>> current-operations (SRO):
>>> VDIs (SRO): 6fc452d3-7381-4416-a2c9-71e526261c40
>>> PBDs (SRO): 0aee7f9b-3171-f2cf-c3a4-929bb538b247;
>>> d3d748b6-574b-598e-5c43-3e4e79c73515; 04e035ba-781c-7c6d-c54b-97b589bc985b;
>>> cfbe9adc-e233-5f2d-d798-058815a247d0; 5badfa05-dd7c-3b90-7fde-01c2ea7483e9
>>> virtual-allocation ( RO): 1073741824
>>> physical-utilisation ( RO): 1077936128
>>> physical-size ( RO): 600016158720
>>> type ( RO): lvmoiscsi
>>> content-type ( RO):
>>> shared ( RW): true
>>> other-config (MRW):
>>> sm-config (MRO): allocation: thick; use_vhd: true;
>>> multipathable: true; devserial: scsi-36782bcb000069cb1000003724df80c1e
>>> blobs ( RO):
>>> local-cache-enabled ( RO): false
>>> tags (SRW):
>>>
>>> [root@vmserver05 ~]# xe vdi-create
>>> sr-uuid=81a9d5c1-f0a8-ecfb-28b0-59154f2b70df name-label=teste
>>> virtual-size=1GiB type=user sm-config:type=raw sharable=true
>>> 782f2e7b-77d4-4590-b5c4-d2d473c6b63f
>>>
>>> Then I have attached this disk in 2 VMs using XenCenter. The VBDs were
>>> created, as display here:
>>>
>>> [root@vmserver05 ~]# xe vdi-param-list
>>> uuid=782f2e7b-77d4-4590-b5c4-d2d473c6b63f
>>> uuid ( RO) : 782f2e7b-77d4-4590-b5c4-d2d473c6b63f
>>> name-label ( RW): teste
>>> name-description ( RW):
>>> is-a-snapshot ( RO): false
>>> snapshot-of ( RO): <not in database>
>>> snapshots ( RO):
>>> snapshot-time ( RO): 19700101T00:00:00Z
>>> allowed-operations (SRO): resize_online; clone
>>> current-operations (SRO):
>>> sr-uuid ( RO): 81a9d5c1-f0a8-ecfb-28b0-59154f2b70df
>>> sr-name-label ( RO): VMDATA02_RAID10
>>> * vbd-uuids (SRO): c56c23da-85eb-5ae8-a413-18da3d8870b3;
>>> 5ca07308-d296-37d9-a715-475453126949*
>>> crashdump-uuids (SRO):
>>> virtual-size ( RO): 1073741824
>>> physical-utilisation ( RO): 1073741824
>>> location ( RO): 782f2e7b-77d4-4590-b5c4-d2d473c6b63f
>>> type ( RO): User
>>> sharable ( RO): true
>>> read-only ( RO): false
>>> storage-lock ( RO): false
>>> managed ( RO): true
>>> parent ( RO): <not in database>
>>> missing ( RO): false
>>> other-config (MRW):
>>> xenstore-data (MRO): vdi-type: aio; storage-type: lvm;
>>> scsi/0x12/0x83:
>>> AIMAMQIBAC1YRU5TUkMgIDc4MmYyZTdiLTc3ZDQtNDU5MC1iNWM0LWQyZDQ3M2M2YjYzZiA=;
>>> scsi/0x12/0x80: AIAAEjc4MmYyZTdiLTc3ZDQtNDUgIA==; vdi-uuid:
>>> 782f2e7b-77d4-4590-b5c4-d2d473c6b63f
>>> sm-config (MRO):
>>> host_OpaqueRef:52a45c20-d88f-5869-7f7b-318b17833721: RW; type: raw;
>>> vdi_type: aio
>>> on-boot ( RW): persist
>>> allow-caching ( RW): false
>>> tags (SRW):
>>>
>>>
>>> But I could activate (plug) only one of them. When I try to plug on
>>> both of them I get this error:
>>>
>>> [root@vmserver05 ~]# xe vbd-plug
>>> uuid=c56c23da-85eb-5ae8-a413-18da3d8870b3
>>> Error code: SR_BACKEND_FAILURE_46
>>> Error parameters: , The VDI is not available [opterr=VDI
>>> 782f2e7b-77d4-4590-b5c4-d2d473c6b63f already attached RW],
>>>
>>> Is there any parameter am I missing?
>>>
>>> On Fri, May 18, 2012 at 10:58 AM, Mike McClurg
>>> <mike.mccl...@citrix.com>wrote:
>>>
>>>> On 18/05/12 11:49, Carlos Eduardo Tavares Terra wrote:
>>>>
>>>>> Do I need to do any special configuration in XCP 1.1 or in the SRs to
>>>>> be
>>>>> capable of sharing a VDI between two virtual machines?
>>>>> Is it possible to do in XCP?
>>>>>
>>>>
>>>> You could possibly do this if only one VM attaches the disk RW, but
>>>> you should definitely not do this if you want more than one of the VMs to
>>>> attach the disk RW. For that, you should use something like NFS instead.
>>>>
>>>> To share a VDI, create a new vbd to connect the second VM to the VDI.
>>>> Do 'xe help vbd-create' for docs.
>>>>
>>>> Mike
>>>>
>>>>
>>>
>>>
>>> --
>>> Carlos Eduardo Tavares Terra
>>> Red Hat Certified Engineer
>>> Consultor em Infraestrutura de TI
>>> GNU/Linux #413291 [http://counter.li.org]
>>>
>>
>>
>>
>> --
>> Carlos Eduardo Tavares Terra
>> Red Hat Certified Engineer
>> Consultor em Infraestrutura de TI
>> GNU/Linux #413291 [http://counter.li.org]
>>
>
>
>
> --
> Carlos Eduardo Tavares Terra
> Red Hat Certified Engineer
> Consultor em Infraestrutura de TI
> GNU/Linux #413291 [http://counter.li.org]
>
>
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>
--
Carlos Eduardo Tavares Terra
Red Hat Certified Engineer
Consultor em Infraestrutura de TI
GNU/Linux #413291 [http://counter.li.org]
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