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Openstack-juno nova disk config

How would I tell a vm that its disk is not sda but xvda? I have another question open but seems I can solve that question by asking this one.

I just need to figure out how to get this peice in the config referenced above to use blktap instead of blktap2. <driver name="tap2" type="raw"/> also its addressing sda instead of xvda....

<disk type='file' device='disk'>
  <driver name='tap2' type='raw'/>
  <source file='/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk'/>
  <target dev='sda' bus='scsi'/>
</disk>

I am not positive but I believe this should be: <disk type="file" device="disk"> <driver name="tap" type="raw"/> <source file="/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk"/> <target dev="xvda" bus="scsi"/> </disk>

I just don't know how.....

Openstack-juno nova disk config

How would I tell a vm that its disk is not sda but xvda? I have another question open but seems I can solve that question by asking this one.

I just need to figure out how to get this peice in the config referenced above to use blktap instead of blktap2. <driver name="tap2" type="raw"/> type="raw"/> also its addressing sda instead of xvda....

<disk type='file' device='disk'>
  <driver name='tap2' type='raw'/>
  <source file='/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk'/>
  <target dev='sda' bus='scsi'/>
</disk>

I am not positive but I believe this should be:

<disk type="file" device="disk"> 
 <driver name="tap" type="raw"/> 
 <source file="/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk"/>
 <target dev="xvda" bus="scsi"/> 
</disk>

</disk>

I just don't know how.....

Openstack-juno nova How would I tell a vm that its disk configis not sda but xvda?

How would I tell a vm that its disk is not sda but xvda? I have another question open but seems I can solve that question by asking this one.

I just need to figure out how to get this peice in the config referenced above to use blktap instead of blktap2. <driver name="tap2" type="raw"/> also its addressing sda instead of xvda....

<disk type='file' device='disk'>
  <driver name='tap2' type='raw'/>
  <source file='/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk'/>
  <target dev='sda' bus='scsi'/>
</disk>

I am not positive but I believe this should be:

<disk type="file" device="disk"> 
 <driver name="tap" type="raw"/> 
 <source file="/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk"/>
 <target dev="xvda" bus="scsi"/> 
</disk>

I just don't know how.....

How would I tell a vm that its disk is not sda but xvda?

How would I tell a vm that its disk is not sda but xvda? I have another question open but seems I can solve that question by asking this one.

I just need to figure out how to get this peice in the config referenced above to use blktap instead of blktap2. <driver name="tap2" type="raw"/> also its addressing sda instead of xvda....

<disk type='file' device='disk'>
  <driver name='tap2' type='raw'/>
  <source file='/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk'/>
  <target dev='sda' bus='scsi'/>
</disk>

I am not positive but I believe this should be:

<disk type="file" device="disk"> 
 <driver name="tap" type="raw"/> 
 <source file="/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk"/>
 <target dev="xvda" bus="scsi"/> 
</disk>

I just don't know how.....how..... From the logs:

    (args, rc, out, err))
TapdiskException: ('create', '-aaio:/var/lib/nova/instances/e0af3d11-7307-4465-a582-80102dba62bd/disk') failed (55808 blktap kernel module not installed )
[2015-03-21 03:29:38 1007] INFO (XendDomain:1126) Domain instance-00000036 (e0af3d11-7307-4465-a582-80102dba62bd) deleted.
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:260) XendDomainInfo.createDormant({'vcpus_params': {'cap': 0, 'weight': 256}, 'PV_args': '', 'features': '', 'cpus': [[], [], [], []], 'use_tmp_kernel': False, 'devices': {'d1b6adf7-ac28-9567-2a5c-b8beb0ede5e2': ('vkbd', {'uuid': 'd1b6adf7-ac28-9567-2a5c-b8beb0ede5e2'}), '12fd6118-4a0e-e4d7-7861-f433b65c3f4b': ('vfb', {'vncunused': '1', 'other_config': {'vncunused': '1', 'vnclisten': '0.0.0.0', 'keymap': 'en-us'}, 'vnc': 1, 'uuid': '12fd6118-4a0e-e4d7-7861-f433b65c3f4b', 'vnclisten': '0.0.0.0', 'keymap': 'en-us'}), 'ccb71f12-9018-1085-5897-1901b07273d8': ('vif', {'bridge': 'qbrc00bf965-c4', 'mac': 'fa:16:3e:75:dc:40', 'script': 'vif-bridge', 'uuid': 'ccb71f12-9018-1085-5897-1901b07273d8', 'vifname': 'tapc00bf965-c4'}), '29247b91-8fec-b90a-d125-7a4cfb754d56': **('tap2', {'bootable': 1, 'uname': 'tap2:aio:/var/lib/nova/mnt/b691535f469d00f57eac8f5b0e6fd3b5/volume-975b7e4f-1271-43e1-9aa4-2d5a0721b54b', 'mode': 'w', 'dev': 'vda', 'uuid': '29247b91-8fec-b90a-d125-7a4cfb754d56'})}**, 'memory_sharing': 0, 'superpages': 0, 'VCPUs_live': 1, 'PV_bootloader': '', 'actions_after_crash': 'destroy', 'vbd_refs': ['29247b91-8fec-b90a-d125-7a4cfb754d56'], 'PV_ramdisk': '', 'is_control_domain': False, 'name_label': 'instance-00000038', 'VCPUs_at_startup': 1, 'HVM_boot_params': {}, 'platform': {'device_model': '/usr/lib/xen/bin/qemu-dm', 'tsc_mode': 0, 'nomigrate': 0, 'localtime': '0'}, 'PV_kernel': '', 'console_refs': ['12fd6118-4a0e-e4d7-7861-f433b65c3f4b'], 'on_xend_stop': 'ignore', 'pool_name': 'Pool-0', 'memory_static_min': 0, 'HVM_boot_policy': '', 'description': '', 'VCPUs_max': 4, 'memory_static_max': 8589934592, 'actions_after_shutdown': 'destroy', 'use_tmp_ramdisk': False, 'on_xend_start': 'ignore', 'memory_dynamic_max': 8589934592, 'actions_after_suspend': '', 'is_a_template': False, 'PV_bootloader_args': '', 'memory_dynamic_min': 8589934592, 'uuid': '20444b5b-539a-4004-b972-8e077a6df819', 'shadow_memory': 0, 'target': 0, 'vcpu_avail': 15, 'other_config': {}, 'auto_power_on': False, 'actions_after_reboot': 'restart', 'Description': '', 'vif_refs': ['ccb71f12-9018-1085-5897-1901b07273d8']})
[2015-03-23 14:42:57 1007] DEBUG (XendDomain:1036) Creating new managed domain: instance-00000038
[2015-03-23 14:42:57 1007] DEBUG (SrvDomain:76) Starting domain instance-00000038 False
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2499) XendDomainInfo.constructDomain
[2015-03-23 14:42:57 1007] DEBUG (balloon:187) Balloon: 2101528 KiB free; need 16384; done.
[2015-03-23 14:42:57 1007] DEBUG (XendDomain:476) Adding Domain: 5
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2842) XendDomainInfo.initDomain: 5 256
[2015-03-23 14:42:57 1007] ERROR (XendBootloader:43) Disk isn't accessible
[2015-03-23 14:42:57 1007] ERROR (XendDomainInfo:488) VM start failed
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 3291, in _configureBootloader
    bootloader_args, kernel, ramdisk, args)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendBootloader.py", line 44, in bootloader
    raise VmError(msg)
VmError: Disk isn't accessible
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:3077) XendDomainInfo.destroy: domid=5
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2407) No device model
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2409) Releasing devices
[2015-03-23 14:42:57 1007] ERROR (SrvBase:88) Request start failed.
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/xen/web/SrvBase.py", line 85, in perform
    return op_method(op, req)
  File "/usr/lib64/python2.7/site-packages/xen/xend/server/SrvDomain.py", line 77, in op_start
    return self.xd.domain_start(self.dom.getName(), paused)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomain.py", line 1070, in domain_start
    dominfo.start(is_managed = True)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 3291, in _configureBootloader
    bootloader_args, kernel, ramdisk, args)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendBootloader.py", line 44, in bootloader
    raise VmError(msg)
VmError: Disk isn't accessible
[2015-03-23 14:42:59 1007] INFO (XendDomain:1126) Domain instance-00000038 (20444b5b-539a-4004-b972-8e077a6df819) deleted.

How would I tell a vm xen pvm that its disk is not sda vda but xvda?

How would I tell a vm that its disk is not sda but xvda? I have another question open but seems I can solve that question by asking this one.

I just need to figure out how to get this peice in the config referenced above to use blktap instead of blktap2. <driver name="tap2" type="raw"/> also its addressing sda instead of xvda....

<disk type='file' device='disk'>
  <driver name='tap2' type='raw'/>
  <source file='/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk'/>
  <target dev='sda' bus='scsi'/>
</disk>

I am not positive but I believe this should be:

<disk type="file" device="disk"> 
 <driver name="tap" type="raw"/> 
 <source file="/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk"/>
 <target dev="xvda" bus="scsi"/> 
</disk>

I just don't know how..... From the logs:xend.log:

    (args, rc, out, err))
TapdiskException: ('create', '-aaio:/var/lib/nova/instances/e0af3d11-7307-4465-a582-80102dba62bd/disk') failed (55808 blktap kernel module not installed )
[2015-03-21 03:29:38 1007] INFO (XendDomain:1126) Domain instance-00000036 (e0af3d11-7307-4465-a582-80102dba62bd) deleted.
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:260) XendDomainInfo.createDormant({'vcpus_params': {'cap': 0, 'weight': 256}, 'PV_args': '', 'features': '', 'cpus': [[], [], [], []], 'use_tmp_kernel': False, 'devices': {'d1b6adf7-ac28-9567-2a5c-b8beb0ede5e2': ('vkbd', {'uuid': 'd1b6adf7-ac28-9567-2a5c-b8beb0ede5e2'}), '12fd6118-4a0e-e4d7-7861-f433b65c3f4b': ('vfb', {'vncunused': '1', 'other_config': {'vncunused': '1', 'vnclisten': '0.0.0.0', 'keymap': 'en-us'}, 'vnc': 1, 'uuid': '12fd6118-4a0e-e4d7-7861-f433b65c3f4b', 'vnclisten': '0.0.0.0', 'keymap': 'en-us'}), 'ccb71f12-9018-1085-5897-1901b07273d8': ('vif', {'bridge': 'qbrc00bf965-c4', 'mac': 'fa:16:3e:75:dc:40', 'script': 'vif-bridge', 'uuid': 'ccb71f12-9018-1085-5897-1901b07273d8', 'vifname': 'tapc00bf965-c4'}), '29247b91-8fec-b90a-d125-7a4cfb754d56': **('tap2', ('tap2', {'bootable': 1, 'uname': 'tap2:aio:/var/lib/nova/mnt/b691535f469d00f57eac8f5b0e6fd3b5/volume-975b7e4f-1271-43e1-9aa4-2d5a0721b54b', 'mode': 'w', 'dev': 'vda', 'uuid': '29247b91-8fec-b90a-d125-7a4cfb754d56'})}**, '29247b91-8fec-b90a-d125-7a4cfb754d56'})}, 'memory_sharing': 0, 'superpages': 0, 'VCPUs_live': 1, 'PV_bootloader': '', 'actions_after_crash': 'destroy', 'vbd_refs': ['29247b91-8fec-b90a-d125-7a4cfb754d56'], 'PV_ramdisk': '', 'is_control_domain': False, 'name_label': 'instance-00000038', 'VCPUs_at_startup': 1, 'HVM_boot_params': {}, 'platform': {'device_model': '/usr/lib/xen/bin/qemu-dm', 'tsc_mode': 0, 'nomigrate': 0, 'localtime': '0'}, 'PV_kernel': '', 'console_refs': ['12fd6118-4a0e-e4d7-7861-f433b65c3f4b'], 'on_xend_stop': 'ignore', 'pool_name': 'Pool-0', 'memory_static_min': 0, 'HVM_boot_policy': '', 'description': '', 'VCPUs_max': 4, 'memory_static_max': 8589934592, 'actions_after_shutdown': 'destroy', 'use_tmp_ramdisk': False, 'on_xend_start': 'ignore', 'memory_dynamic_max': 8589934592, 'actions_after_suspend': '', 'is_a_template': False, 'PV_bootloader_args': '', 'memory_dynamic_min': 8589934592, 'uuid': '20444b5b-539a-4004-b972-8e077a6df819', 'shadow_memory': 0, 'target': 0, 'vcpu_avail': 15, 'other_config': {}, 'auto_power_on': False, 'actions_after_reboot': 'restart', 'Description': '', 'vif_refs': ['ccb71f12-9018-1085-5897-1901b07273d8']})
[2015-03-23 14:42:57 1007] DEBUG (XendDomain:1036) Creating new managed domain: instance-00000038
[2015-03-23 14:42:57 1007] DEBUG (SrvDomain:76) Starting domain instance-00000038 False
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2499) XendDomainInfo.constructDomain
[2015-03-23 14:42:57 1007] DEBUG (balloon:187) Balloon: 2101528 KiB free; need 16384; done.
[2015-03-23 14:42:57 1007] DEBUG (XendDomain:476) Adding Domain: 5
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2842) XendDomainInfo.initDomain: 5 256
[2015-03-23 14:42:57 1007] ERROR (XendBootloader:43) Disk isn't accessible
[2015-03-23 14:42:57 1007] ERROR (XendDomainInfo:488) VM start failed
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 3291, in _configureBootloader
    bootloader_args, kernel, ramdisk, args)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendBootloader.py", line 44, in bootloader
    raise VmError(msg)
VmError: Disk isn't accessible
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:3077) XendDomainInfo.destroy: domid=5
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2407) No device model
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2409) Releasing devices
[2015-03-23 14:42:57 1007] ERROR (SrvBase:88) Request start failed.
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/xen/web/SrvBase.py", line 85, in perform
    return op_method(op, req)
  File "/usr/lib64/python2.7/site-packages/xen/xend/server/SrvDomain.py", line 77, in op_start
    return self.xd.domain_start(self.dom.getName(), paused)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomain.py", line 1070, in domain_start
    dominfo.start(is_managed = True)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 3291, in _configureBootloader
    bootloader_args, kernel, ramdisk, args)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendBootloader.py", line 44, in bootloader
    raise VmError(msg)
VmError: Disk isn't accessible
[2015-03-23 14:42:59 1007] INFO (XendDomain:1126) Domain instance-00000038 (20444b5b-539a-4004-b972-8e077a6df819) deleted.

How would I tell a xen pvm that its disk is not vda but xvda?

How would I tell a vm that its disk is not sda vda but xvda? I have another question open but seems I can solve that question by asking this one.

I just need to figure out how to get this peice in the config referenced above to use blktap instead of blktap2. <driver name="tap2" type="raw"/> also its addressing sda instead of xvda....

<disk type='file' device='disk'>
  <driver name='tap2' type='raw'/>
  <source file='/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk'/>
  <target dev='sda' bus='scsi'/>
</disk>

I am not positive but I believe this should be:

<disk type="file" device="disk"> 
 <driver name="tap" type="raw"/> 
 <source file="/var/lib/nova/instances/152bd71a-4f8e-4781-b397-77f95776aa7d/disk"/>
 <target dev="xvda" bus="scsi"/> 
</disk>

I just don't know how..... From the xend.log:

    (args, rc, out, err))
TapdiskException: ('create', '-aaio:/var/lib/nova/instances/e0af3d11-7307-4465-a582-80102dba62bd/disk') failed (55808 blktap kernel module not installed )
[2015-03-21 03:29:38 1007] INFO (XendDomain:1126) Domain instance-00000036 (e0af3d11-7307-4465-a582-80102dba62bd) deleted.
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:260) XendDomainInfo.createDormant({'vcpus_params': {'cap': 0, 'weight': 256}, 'PV_args': '', 'features': '', 'cpus': [[], [], [], []], 'use_tmp_kernel': False, 'devices': {'d1b6adf7-ac28-9567-2a5c-b8beb0ede5e2': ('vkbd', {'uuid': 'd1b6adf7-ac28-9567-2a5c-b8beb0ede5e2'}), '12fd6118-4a0e-e4d7-7861-f433b65c3f4b': ('vfb', {'vncunused': '1', 'other_config': {'vncunused': '1', 'vnclisten': '0.0.0.0', 'keymap': 'en-us'}, 'vnc': 1, 'uuid': '12fd6118-4a0e-e4d7-7861-f433b65c3f4b', 'vnclisten': '0.0.0.0', 'keymap': 'en-us'}), 'ccb71f12-9018-1085-5897-1901b07273d8': ('vif', {'bridge': 'qbrc00bf965-c4', 'mac': 'fa:16:3e:75:dc:40', 'script': 'vif-bridge', 'uuid': 'ccb71f12-9018-1085-5897-1901b07273d8', 'vifname': 'tapc00bf965-c4'}), '29247b91-8fec-b90a-d125-7a4cfb754d56': ('tap2', {'bootable': 1, 'uname': 'tap2:aio:/var/lib/nova/mnt/b691535f469d00f57eac8f5b0e6fd3b5/volume-975b7e4f-1271-43e1-9aa4-2d5a0721b54b', 'mode': 'w', 'dev': 'vda', 'uuid': '29247b91-8fec-b90a-d125-7a4cfb754d56'})}, 'memory_sharing': 0, 'superpages': 0, 'VCPUs_live': 1, 'PV_bootloader': '', 'actions_after_crash': 'destroy', 'vbd_refs': ['29247b91-8fec-b90a-d125-7a4cfb754d56'], 'PV_ramdisk': '', 'is_control_domain': False, 'name_label': 'instance-00000038', 'VCPUs_at_startup': 1, 'HVM_boot_params': {}, 'platform': {'device_model': '/usr/lib/xen/bin/qemu-dm', 'tsc_mode': 0, 'nomigrate': 0, 'localtime': '0'}, 'PV_kernel': '', 'console_refs': ['12fd6118-4a0e-e4d7-7861-f433b65c3f4b'], 'on_xend_stop': 'ignore', 'pool_name': 'Pool-0', 'memory_static_min': 0, 'HVM_boot_policy': '', 'description': '', 'VCPUs_max': 4, 'memory_static_max': 8589934592, 'actions_after_shutdown': 'destroy', 'use_tmp_ramdisk': False, 'on_xend_start': 'ignore', 'memory_dynamic_max': 8589934592, 'actions_after_suspend': '', 'is_a_template': False, 'PV_bootloader_args': '', 'memory_dynamic_min': 8589934592, 'uuid': '20444b5b-539a-4004-b972-8e077a6df819', 'shadow_memory': 0, 'target': 0, 'vcpu_avail': 15, 'other_config': {}, 'auto_power_on': False, 'actions_after_reboot': 'restart', 'Description': '', 'vif_refs': ['ccb71f12-9018-1085-5897-1901b07273d8']})
[2015-03-23 14:42:57 1007] DEBUG (XendDomain:1036) Creating new managed domain: instance-00000038
[2015-03-23 14:42:57 1007] DEBUG (SrvDomain:76) Starting domain instance-00000038 False
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2499) XendDomainInfo.constructDomain
[2015-03-23 14:42:57 1007] DEBUG (balloon:187) Balloon: 2101528 KiB free; need 16384; done.
[2015-03-23 14:42:57 1007] DEBUG (XendDomain:476) Adding Domain: 5
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2842) XendDomainInfo.initDomain: 5 256
[2015-03-23 14:42:57 1007] ERROR (XendBootloader:43) Disk isn't accessible
[2015-03-23 14:42:57 1007] ERROR (XendDomainInfo:488) VM start failed
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 3291, in _configureBootloader
    bootloader_args, kernel, ramdisk, args)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendBootloader.py", line 44, in bootloader
    raise VmError(msg)
VmError: Disk isn't accessible
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:3077) XendDomainInfo.destroy: domid=5
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2407) No device model
[2015-03-23 14:42:57 1007] DEBUG (XendDomainInfo:2409) Releasing devices
[2015-03-23 14:42:57 1007] ERROR (SrvBase:88) Request start failed.
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/xen/web/SrvBase.py", line 85, in perform
    return op_method(op, req)
  File "/usr/lib64/python2.7/site-packages/xen/xend/server/SrvDomain.py", line 77, in op_start
    return self.xd.domain_start(self.dom.getName(), paused)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomain.py", line 1070, in domain_start
    dominfo.start(is_managed = True)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 3291, in _configureBootloader
    bootloader_args, kernel, ramdisk, args)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendBootloader.py", line 44, in bootloader
    raise VmError(msg)
VmError: Disk isn't accessible
[2015-03-23 14:42:59 1007] INFO (XendDomain:1126) Domain instance-00000038 (20444b5b-539a-4004-b972-8e077a6df819) deleted.