[ovirt-users] Cannot start VM after live storage migration - Bad volume specification

18 Mar 2018

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Hi all,

  we did a live storage migration of one of three disks of a vm that failed=
 because the vm became not responding when deleting the auto-snapshot:

2018-03-16 15:07:32.084+01 |        0 | Snapshot 'VMNAME_Disk2 Auto-generat=
ed for Live Storage Migration' creation for VM 'VMNAME' was initiated by xx=
x
2018-03-16 15:07:32.097+01 |        0 | User xxx moving disk VMNAME_Disk2 t=
o domain VMHOST_LUN_211.
2018-03-16 15:08:56.304+01 |        0 | Snapshot 'VMNAME_Disk2 Auto-generat=
ed for Live Storage Migration' creation for VM 'VMNAME' has been completed.
2018-03-16 16:40:48.89+01  |        0 | Snapshot 'VMNAME_Disk2 Auto-generat=
ed for Live Storage Migration' deletion for VM 'VMNAME' was initiated by xx=
x.
2018-03-16 16:44:44.813+01 |        1 | VM VMNAME is not responding.
2018-03-18 18:40:51.258+01 |        2 | Failed to delete snapshot 'VMNAME_D=
isk2 Auto-generated for Live Storage Migration' for VM 'VMNAME'.
2018-03-18 18:40:54.506+01 |        1 | Possible failure while deleting VMN=
AME_Disk2 from the source Storage Domain VMHOST_LUN_211 during the move ope=
ration. The Storage Domain may be manually cleaned-up from possible leftove=
r
s (User:xxx).

Now we cannot start the vm anymore as long as this disk is online. Error me=
ssage is "VM VMNAME is down with error. Exit message: Bad volume specificat=
ion {'index': 2, 'domainID': 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a', 'reqsi=
ze': '0', 'name': 'vdc', 'truesize': '2147483648', 'format': 'cow', 'discar=
d': False, 'volumeID': '4659b5e0-93c1-478d-97d0-ec1cf4052028', 'apparentsiz=
e': '2147483648', 'imageID': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'specP=
arams': {}, 'iface': 'virtio', 'cache': 'none', 'propagateErrors': 'off', '=
poolID': '5849b030-626e-47cb-ad90-3ce782d831b3', 'device': 'disk', 'path': =
'/rhev/data-center/mnt/blockSD/ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a/images/=
c1a05108-90d7-421d-a9b4-d4cc65c48429/4659b5e0-93c1-478d-97d0-ec1cf4052028',=
 'serial': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'diskType': 'block', 'ty=
pe': 'block'}."

vdsm.log:
2018-03-18 21:53:33,815+0100 ERROR (vm/7d05e511) [storage.TaskManager.Task]=
 (Task=3D'fc3bac16-64f3-4910-8bc4-6cfdd4d270da') Unexpected error (task:875=
)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 882, i=
n _run
    return fn(*args, **kargs)
  File "<string>", line 2, in prepareImage
  File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 48, in m=
ethod
    ret =3D func(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/hsm.py", line 3179, i=
n prepareImage
    raise se.prepareIllegalVolumeError(volUUID)
prepareIllegalVolumeError: Cannot prepare illegal volume: ('4c6475b1-352a-4=
114-b647-505cccbe6663',)
2018-03-18 21:53:33,816+0100 INFO  (vm/7d05e511) [storage.TaskManager.Task]=
 (Task=3D'fc3bac16-64f3-4910-8bc4-6cfdd4d270da') aborting: Task is aborted:=
 "Cannot prepare illegal volume: ('4c6475b1-352a-4114-b647-505cccbe6663',)"=
 - code 227 (task:1181)
2018-03-18 21:53:33,816+0100 ERROR (vm/7d05e511) [storage.Dispatcher] FINIS=
H prepareImage error=3DCannot prepare illegal volume: ('4c6475b1-352a-4114-=
b647-505cccbe6663',) (dispatcher:82)
2018-03-18 21:53:33,816+0100 ERROR (vm/7d05e511) [virt.vm] (vmId=3D'7d05e51=
1-2e97-4002-bded-285ec4e30587') The vm start process failed (vm:927)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 856, in _st=
artUnderlyingVm
    self._run()
 File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 2661, in _ru=
n
    self._devices =3D self._make_devices()
  File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 2608, in _m=
ake_devices
    self._preparePathsForDrives(disk_params)
  File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 1001, in _p=
reparePathsForDrives
    drive['path'] =3D self.cif.prepareVolumePath(drive, self.id)
  File "/usr/lib/python2.7/site-packages/vdsm/clientIF.py", line 393, in pr=
epareVolumePath
    raise vm.VolumeError(drive)
VolumeError: Bad volume specification {'index': 2, 'domainID': 'ecc71a64-62=
c1-43f4-bf1f-3bc1b22c7a8a', 'reqsize': '0', 'name': 'vdc', 'truesize': '214=
7483648', 'format': 'cow', 'discard': False, 'volumeID': '4659b5e0-93c1-478=
d-97d0-ec1cf4052028', 'apparentsize': '2147483648', 'imageID': 'c1a05108-90=
d7-421d-a9b4-d4cc65c48429', 'specParams': {}, 'iface': 'virtio', 'cache': '=
none', 'propagateErrors': 'off', 'poolID': '5849b030-626e-47cb-ad90-3ce782d=
831b3', 'device': 'disk', 'path': '/rhev/data-center/mnt/blockSD/ecc71a64-6=
2c1-43f4-bf1f-3bc1b22c7a8a/images/c1a05108-90d7-421d-a9b4-d4cc65c48429/4659=
b5e0-93c1-478d-97d0-ec1cf4052028', 'serial': 'c1a05108-90d7-421d-a9b4-d4cc6=
5c48429', 'diskType': 'block', 'type': 'block'}
2018-03-18 21:53:33,817+0100 INFO  (vm/7d05e511) [virt.vm] (vmId=3D'7d05e51=
1-2e97-4002-bded-285ec4e30587') Changed state to Down: Bad volume specifica=
tion {'index': 2, 'domainID': 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a', 'reqs=
ize': '0', 'name': 'vdc', 'truesize': '2147483648', 'format': 'cow', 'disca=
rd': False, 'volumeID': '4659b5e0-93c1-478d-97d0-ec1cf4052028', 'apparentsi=
ze': '2147483648', 'imageID': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'spec=
Params': {}, 'iface': 'virtio', 'cache': 'none', 'propagateErrors': 'off', =
'poolID': '5849b030-626e-47cb-ad90-3ce782d831b3', 'device': 'disk', 'path':=
 '/rhev/data-center/mnt/blockSD/ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a/images=
/c1a05108-90d7-421d-a9b4-d4cc65c48429/4659b5e0-93c1-478d-97d0-ec1cf4052028'=
, 'serial': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'diskType': 'block', 't=
ype': 'block'} (code=3D1) (vm:1646)

Is there a way to recover this disk?

Thank you,
Simone

--_000_2CB4E8C8E00E594EA06D4AC427E429920FE9C36Bfabamailserverf_
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...
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-16 15:07:32.097+01 |  =
      0 | User xxx moving disk VMNAME_Disk2 to dom=
ain VMHOST_LUN_211.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-16 15:08:56.304+01 |  =
      0 | Snapshot 'VMNAME_Disk2 Auto-generated fo=
r Live Storage Migration' creation for VM 'VMNAME' has been completed.<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-16 16:40:48.89+01  | &=
nbsp;      0 | Snapshot 'VMNAME_Disk2 Auto-generat=
ed for Live Storage Migration' deletion for VM 'VMNAME' was initiated by xx=
x.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-16 16:44:44.813+01 |  =
      1 | VM VMNAME is not responding.<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-18 18:40:51.258+01 |  =
      2 | Failed to delete snapshot 'VMNAME_Disk2 =
Auto-generated for Live Storage Migration' for VM 'VMNAME'.<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-18 18:40:54.506+01 |  =
      1 | Possible failure while deleting VMNAME_D=
isk2 from the source Storage Domain VMHOST_LUN_211 during the move operatio=
n. The Storage
 Domain may be manually cleaned-up from possible leftover<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">s (User:xxx).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">Now we cannot start the vm anym=
ore as long as this disk is online. Error message is
</span><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-family:"Cour=
ier New"">“VM VMNAME is down with error. Exit message: Bad volum=
e specification {'index': 2, 'domainID': 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7=
a8a', 'reqsize': '0', 'name': 'vdc', 'truesize': '2147483648',
 'format': 'cow', 'discard': False, 'volumeID': '4659b5e0-93c1-478d-97d0-ec=
1cf4052028', 'apparentsize': '2147483648', 'imageID': 'c1a05108-90d7-421d-a=
9b4-d4cc65c48429', 'specParams': {}, 'iface': 'virtio', 'cache': 'none', 'p=
ropagateErrors': 'off', 'poolID':
 '5849b030-626e-47cb-ad90-3ce782d831b3', 'device': 'disk', 'path': '/rhev/d=
ata-center/mnt/blockSD/ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a/images/c1a05108=
-90d7-421d-a9b4-d4cc65c48429/4659b5e0-93c1-478d-97d0-ec1cf4052028', 'serial=
': 'c1a05108-90d7-421d-a9b4-d4cc65c48429',
 'diskType': 'block', 'type': 'block'}.”</span><span lang=3D"EN-GB"><=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">vdsm.log:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-18 21:53:33,815+0100 ERROR (vm/7=
d05e511) [storage.TaskManager.Task] (Task=3D'fc3bac16-64f3-4910-8bc4-6cfdd4=
d270da') Unexpected error (task:875)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">Traceback (most recent call last):<o:p></o:p=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">  File "/usr/lib/python2.7/site-pa=
ckages/vdsm/storage/task.py", line 882, in _run<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">    return fn(*args, **kargs)=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">  File "<string>", line=
 2, in prepareImage<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">  File "/usr/lib/python2.7/site-pa=
ckages/vdsm/common/api.py", line 48, in method<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">    ret =3D func(*args, **kwa=
rgs)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">  File "/usr/lib/python2.7/site-pa=
ckages/vdsm/storage/hsm.py", line 3179, in prepareImage<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">    raise se.prepareIllegalVo=
lumeError(volUUID)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">prepareIllegalVolumeError: Cannot prepare il=
legal volume: ('4c6475b1-352a-4114-b647-505cccbe6663',)<o:p></o:p></span></=
...
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">  File "/usr/lib/python2.7/site-pa=
ckages/vdsm/virt/vm.py", line 856, in _startUnderlyingVm<o:p></o:p></s=
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<p class=3D"MsoNormal">Hi all,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">  we did a live storage mi=
gration of one of three disks of a vm that failed because the vm became not=
 responding when deleting the auto-snapshot:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-16 15:07:32.084+01 |  =
      0 | Snapshot 'VMNAME_Disk2 Auto-generated fo=
r Live Storage Migration' creation for VM 'VMNAME' was initiated by xxx<o:p=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-18 21:53:33,816+0100 INFO  =
(vm/7d05e511) [storage.TaskManager.Task] (Task=3D'fc3bac16-64f3-4910-8bc4-6=
cfdd4d270da') aborting: Task is aborted: "Cannot prepare illegal
 volume: ('4c6475b1-352a-4114-b647-505cccbe6663',)" - code 227 (task:1=
181)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-18 21:53:33,816+0100 ERROR (vm/7=
d05e511) [storage.Dispatcher] FINISH prepareImage error=3DCannot prepare il=
legal volume: ('4c6475b1-352a-4114-b647-505cccbe6663',)
 (dispatcher:82)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-18 21:53:33,816+0100 ERROR (vm/7=
d05e511) [virt.vm] (vmId=3D'7d05e511-2e97-4002-bded-285ec4e30587') The vm s=
tart process failed (vm:927)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">Traceback (most recent call last):<o:p></o:p=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">    self._run()<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New""> File "/usr/lib/python2.7/site-pac=
kages/vdsm/virt/vm.py", line 2661, in _run<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">    self._devices =3D self._m=
ake_devices()<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">  File "/usr/lib/python2.7/site-pa=
ckages/vdsm/virt/vm.py", line 2608, in _make_devices<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">    self._preparePathsForDriv=
es(disk_params)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">  File "/usr/lib/python2.7/site-pa=
ckages/vdsm/virt/vm.py", line 1001, in _preparePathsForDrives<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">    drive['path'] =3D self.ci=
f.prepareVolumePath(drive, self.id)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">  File "/usr/lib/python2.7/site-pa=
ckages/vdsm/clientIF.py", line 393, in prepareVolumePath<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">    raise vm.VolumeError(driv=
e)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">VolumeError: Bad volume specification {'inde=
x': 2, 'domainID': 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a', 'reqsize': '0', =
'name': 'vdc', 'truesize': '2147483648', 'format':
 'cow', 'discard': False, 'volumeID': '4659b5e0-93c1-478d-97d0-ec1cf4052028=
', 'apparentsize': '2147483648', 'imageID': 'c1a05108-90d7-421d-a9b4-d4cc65=
c48429', 'specParams': {}, 'iface': 'virtio', 'cache': 'none', 'propagateEr=
rors': 'off', 'poolID': '5849b030-626e-47cb-ad90-3ce782d831b3',
 'device': 'disk', 'path': '/rhev/data-center/mnt/blockSD/ecc71a64-62c1-43f=
4-bf1f-3bc1b22c7a8a/images/c1a05108-90d7-421d-a9b4-d4cc65c48429/4659b5e0-93=
c1-478d-97d0-ec1cf4052028', 'serial': 'c1a05108-90d7-421d-a9b4-d4cc65c48429=
', 'diskType': 'block', 'type':
 'block'}<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:9.0pt;font-f=
amily:"Courier New"">2018-03-18 21:53:33,817+0100 INFO  =
(vm/7d05e511) [virt.vm] (vmId=3D'7d05e511-2e97-4002-bded-285ec4e30587') Cha=
nged state to Down: Bad volume specification {'index': 2, 'domainID':
 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a', 'reqsize': '0', 'name': 'vdc', 'tr=
uesize': '2147483648', 'format': 'cow', 'discard': False, 'volumeID': '4659=
b5e0-93c1-478d-97d0-ec1cf4052028', 'apparentsize': '2147483648', 'imageID':=
 'c1a05108-90d7-421d-a9b4-d4cc65c48429',
 'specParams': {}, 'iface': 'virtio', 'cache': 'none', 'propagateErrors': '=
off', 'poolID': '5849b030-626e-47cb-ad90-3ce782d831b3', 'device': 'disk', '=
path': '/rhev/data-center/mnt/blockSD/ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a/=
images/c1a05108-90d7-421d-a9b4-d4cc65c48429/4659b5e0-93c1-478d-97d0-ec1cf40=
52028',
 'serial': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'diskType': 'block', 'ty=
pe': 'block'} (code=3D1) (vm:1646)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">Is there a way to recover this =
disk?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"mso-fareast-language:D=
E">Thank you,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"mso-fareast-language:D=
E">Simone<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p> </o:p></span></p>
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[ovirt-users] Cannot start VM after live storage migration - Bad volume specification

Bruckner, Simone