[ovirt-users] Switch from Fedora 20 to CentOS 7.1

Nir Soffer nsoffer at redhat.com
Fri May 22 18:59:51 UTC 2015 

----- Original Message -----
> From: "Soeren Malchow" <soeren.malchow at mcon.net>
> To: "Jurriën Bloemen" <Jurrien.Bloemen at dmc.amcnetworks.com>, users at ovirt.org
> Sent: Thursday, May 21, 2015 7:35:02 PM
> Subject: Re: [ovirt-users] Switch from Fedora 20 to CentOS 7.1
> 
> Hi,
> 
> We now created the new Cluster based on CentOS 7.1 which went fine, then we
> migrated 2 machines – no problem, we have Live Migration (back), Live Merge
> and so on, all good.
> 
> But some additional machine have problems starting on the new cluster and
> this happens
> 
> 
> Grep for the Thread in vdsm.log
> <— snip —>
> 
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:21,999::vm::2264::vm.Vm::(_startUnderlyingVm)
> vmId=`24bd5074-64fc-4aa0-87cd-5de3dd7b50d1`::Start
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,003::vm::2268::vm.Vm::(_startUnderlyingVm)
> vmId=`24bd5074-64fc-4aa0-87cd-5de3dd7b50d1`::_ongoingCreations acquired
> vdsm/vdsm.log:Thread-5475::INFO::2015-05-21
> 18:27:22,008::vm::3261::vm.Vm::(_run)
> vmId=`24bd5074-64fc-4aa0-87cd-5de3dd7b50d1`::VM wrapper has started
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,021::task::595::Storage.TaskManager.Task::(_updateState)
> Task=`2bc7fe9c-204a-4ab7-a116-f7fbba32bd34`::moving from state init -> state
> preparing
> vdsm/vdsm.log:Thread-5475::INFO::2015-05-21
> 18:27:22,028::logUtils::44::dispatcher::(wrapper) Run and protect:
> getVolumeSize(sdUUID=u'276e9ba7-e19a-49c5-8ad7-26711934d5e4',
> spUUID=u'0f954891-b1cd-4f09-99ae-75d404d95f9d',
> imgUUID=u'eae65249-e5e8-49e7-90a0-c7385e80e6ca',
> volUUID=u'8791f6ec-a6ef-484d-bd5a-730b22b19250', options=None)
> vdsm/vdsm.log:Thread-5475::INFO::2015-05-21
> 18:27:22,069::logUtils::47::dispatcher::(wrapper) Run and protect:
> getVolumeSize, Return response: {'truesize': '2696552448', 'apparentsize':
> '2696609792'}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,069::task::1191::Storage.TaskManager.Task::(prepare)
> Task=`2bc7fe9c-204a-4ab7-a116-f7fbba32bd34`::finished: {'truesize':
> '2696552448', 'apparentsize': '2696609792'}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,069::task::595::Storage.TaskManager.Task::(_updateState)
> Task=`2bc7fe9c-204a-4ab7-a116-f7fbba32bd34`::moving from state preparing ->
> state finished
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,070::resourceManager::940::Storage.ResourceManager.Owner::(releaseAll)
> Owner.releaseAll requests {} resources {}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,070::resourceManager::977::Storage.ResourceManager.Owner::(cancelAll)
> Owner.cancelAll requests {}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,070::task::993::Storage.TaskManager.Task::(_decref)
> Task=`2bc7fe9c-204a-4ab7-a116-f7fbba32bd34`::ref 0 aborting False
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,071::task::595::Storage.TaskManager.Task::(_updateState)
> Task=`c508cf8f-9f02-43a6-a45d-2b3f1d7e66be`::moving from state init -> state
> preparing
> vdsm/vdsm.log:Thread-5475::INFO::2015-05-21
> 18:27:22,071::logUtils::44::dispatcher::(wrapper) Run and protect:
> getVolumeSize(sdUUID=u'276e9ba7-e19a-49c5-8ad7-26711934d5e4',
> spUUID=u'0f954891-b1cd-4f09-99ae-75d404d95f9d',
> imgUUID=u'967d966c-3653-4ff6-9299-2fb5b4197c37',
> volUUID=u'99b085e6-6662-43ef-8ab4-40bc00e82460', options=None)
> vdsm/vdsm.log:Thread-5475::INFO::2015-05-21
> 18:27:22,086::logUtils::47::dispatcher::(wrapper) Run and protect:
> getVolumeSize, Return response: {'truesize': '1110773760', 'apparentsize':
> '1110835200'}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,087::task::1191::Storage.TaskManager.Task::(prepare)
> Task=`c508cf8f-9f02-43a6-a45d-2b3f1d7e66be`::finished: {'truesize':
> '1110773760', 'apparentsize': '1110835200'}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,087::task::595::Storage.TaskManager.Task::(_updateState)
> Task=`c508cf8f-9f02-43a6-a45d-2b3f1d7e66be`::moving from state preparing ->
> state finished
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,087::resourceManager::940::Storage.ResourceManager.Owner::(releaseAll)
> Owner.releaseAll requests {} resources {}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,088::resourceManager::977::Storage.ResourceManager.Owner::(cancelAll)
> Owner.cancelAll requests {}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,088::task::993::Storage.TaskManager.Task::(_decref)
> Task=`c508cf8f-9f02-43a6-a45d-2b3f1d7e66be`::ref 0 aborting False
> vdsm/vdsm.log:Thread-5475::INFO::2015-05-21
> 18:27:22,088::clientIF::335::vds::(prepareVolumePath) prepared volume path:
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,089::task::595::Storage.TaskManager.Task::(_updateState)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::moving from state init -> state
> preparing
> vdsm/vdsm.log:Thread-5475::INFO::2015-05-21
> 18:27:22,089::logUtils::44::dispatcher::(wrapper) Run and protect:
> prepareImage(sdUUID=u'276e9ba7-e19a-49c5-8ad7-26711934d5e4',
> spUUID=u'0f954891-b1cd-4f09-99ae-75d404d95f9d',
> imgUUID=u'eae65249-e5e8-49e7-90a0-c7385e80e6ca',
> leafUUID=u'8791f6ec-a6ef-484d-bd5a-730b22b19250')
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,090::resourceManager::198::Storage.ResourceManager.Request::(__init__)
> ResName=`Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4`ReqID=`2ba5bd10-3b98-44fa-9c90-8a2ade3261dc`::Request
> was made in '/usr/share/vdsm/storage/hsm.py' line '3226' at 'prepareImage'
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,090::resourceManager::542::Storage.ResourceManager::(registerResource)
> Trying to register resource 'Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4'
> for lock type 'shared'
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,091::resourceManager::601::Storage.ResourceManager::(registerResource)
> Resource 'Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4' is free. Now locking
> as 'shared' (1 active user)
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,091::resourceManager::238::Storage.ResourceManager.Request::(grant)
> ResName=`Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4`ReqID=`2ba5bd10-3b98-44fa-9c90-8a2ade3261dc`::Granted
> request
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,092::task::827::Storage.TaskManager.Task::(resourceAcquired)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::_resourcesAcquired:
> Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4 (shared)
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:22,092::task::993::Storage.TaskManager.Task::(_decref)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::ref 1 aborting False
> vdsm/vdsm.log:Thread-5475::ERROR::2015-05-21
> 18:27:24,107::task::866::Storage.TaskManager.Task::(_setError)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::Unexpected error
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,108::task::885::Storage.TaskManager.Task::(_run)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::Task._run:
> 7ca2f743-09b1-4499-b9e4-5f640002a2bc
> (u'276e9ba7-e19a-49c5-8ad7-26711934d5e4',
> u'0f954891-b1cd-4f09-99ae-75d404d95f9d',
> u'eae65249-e5e8-49e7-90a0-c7385e80e6ca',
> u'8791f6ec-a6ef-484d-bd5a-730b22b19250') {} failed - stopping task
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,108::task::1217::Storage.TaskManager.Task::(stop)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::stopping in state preparing
> (force False)
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,108::task::993::Storage.TaskManager.Task::(_decref)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::ref 1 aborting True
> vdsm/vdsm.log:Thread-5475::INFO::2015-05-21
> 18:27:24,109::task::1171::Storage.TaskManager.Task::(prepare)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::aborting: Task is aborted:
> 'Volume does not exist' - code 201
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,109::task::1176::Storage.TaskManager.Task::(prepare)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::Prepare: aborted: Volume does
> not exist
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,109::task::993::Storage.TaskManager.Task::(_decref)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::ref 0 aborting True
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,110::task::928::Storage.TaskManager.Task::(_doAbort)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::Task._doAbort: force False
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,110::resourceManager::977::Storage.ResourceManager.Owner::(cancelAll)
> Owner.cancelAll requests {}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,110::task::595::Storage.TaskManager.Task::(_updateState)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::moving from state preparing ->
> state aborting
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,110::task::550::Storage.TaskManager.Task::(__state_aborting)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::_aborting: recover policy none
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,111::task::595::Storage.TaskManager.Task::(_updateState)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::moving from state aborting ->
> state failed
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,111::resourceManager::940::Storage.ResourceManager.Owner::(releaseAll)
> Owner.releaseAll requests {} resources
> {u'Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4': < ResourceRef
> 'Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4', isValid: 'True' obj:
> 'None'>}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,111::resourceManager::977::Storage.ResourceManager.Owner::(cancelAll)
> Owner.cancelAll requests {}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,112::resourceManager::616::Storage.ResourceManager::(releaseResource)
> Trying to release resource 'Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4'
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,112::resourceManager::635::Storage.ResourceManager::(releaseResource)
> Released resource 'Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4' (0 active
> users)
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,112::resourceManager::641::Storage.ResourceManager::(releaseResource)
> Resource 'Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4' is free, finding out
> if anyone is waiting for it.
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,113::resourceManager::649::Storage.ResourceManager::(releaseResource)
> No one is waiting for resource
> 'Storage.276e9ba7-e19a-49c5-8ad7-26711934d5e4', Clearing records.
> vdsm/vdsm.log:Thread-5475::ERROR::2015-05-21
> 18:27:24,113::dispatcher::76::Storage.Dispatcher::(wrapper) {'status':
> {'message': "Volume does not exist:
> (u'8791f6ec-a6ef-484d-bd5a-730b22b19250',)", 'code': 201}}
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,114::vm::2294::vm.Vm::(_startUnderlyingVm)
> vmId=`24bd5074-64fc-4aa0-87cd-5de3dd7b50d1`::_ongoingCreations released
> vdsm/vdsm.log:Thread-5475::ERROR::2015-05-21
> 18:27:24,114::vm::2331::vm.Vm::(_startUnderlyingVm)
> vmId=`24bd5074-64fc-4aa0-87cd-5de3dd7b50d1`::The vm start process failed
> vdsm/vdsm.log:Thread-5475::DEBUG::2015-05-21
> 18:27:24,117::vm::2786::vm.Vm::(setDownStatus)
> vmId=`24bd5074-64fc-4aa0-87cd-5de3dd7b50d1`::Changed state to Down: Bad
> volume specification {u'index': 0, u'iface': u'virtio', u'type': u'disk',
> u'format': u'cow', u'bootOrder': u'1', u'address': {u'slot': u'0x06',
> u'bus': u'0x00', u'domain': u'0x0000', u'type': u'pci', u'function':
> u'0x0'}, u'volumeID': u'8791f6ec-a6ef-484d-bd5a-730b22b19250',
> 'apparentsize': '2696609792', u'imageID':
> u'eae65249-e5e8-49e7-90a0-c7385e80e6ca', u'specParams': {}, u'readonly':
> u'false', u'domainID': u'276e9ba7-e19a-49c5-8ad7-26711934d5e4', 'reqsize':
> '0', u'deviceId': u'eae65249-e5e8-49e7-90a0-c7385e80e6ca', 'truesize':
> '2696552448', u'poolID': u'0f954891-b1cd-4f09-99ae-75d404d95f9d', u'device':
> u'disk', u'shared': u'false', u'propagateErrors': u'off', u'optional':
> u'false'} (code=1)
> 
> <— snip —>
> 
> 
> Additionally i can find this
> 
> —
> Thread-5475::ERROR::2015-05-21
> 18:27:24,107::task::866::Storage.TaskManager.Task::(_setError)
> Task=`7ca2f743-09b1-4499-b9e4-5f640002a2bc`::Unexpected error
> Traceback (most recent call last):
> File "/usr/share/vdsm/storage/task.py", line 873, in _run
> return fn(*args, **kargs)
> File "/usr/share/vdsm/logUtils.py", line 45, in wrapper
> res = f(*args, **kwargs)
> File "/usr/share/vdsm/storage/hsm.py", line 3235, in prepareImage
> raise se.VolumeDoesNotExist(leafUUID)
> VolumeDoesNotExist: Volume does not exist:
> (u'8791f6ec-a6ef-484d-bd5a-730b22b19250’,)
> 
> —
> 
> 
> —
> Thread-5475::ERROR::2015-05-21
> 18:27:24,114::vm::2331::vm.Vm::(_startUnderlyingVm)
> vmId=`24bd5074-64fc-4aa0-87cd-5de3dd7b50d1`::The vm start process failed
> Traceback (most recent call last):
> File "/usr/share/vdsm/virt/vm.py", line 2271, in _startUnderlyingVm
> self._run()
> File "/usr/share/vdsm/virt/vm.py", line 3266, in _run
> self.preparePaths(devices[DISK_DEVICES])
> File "/usr/share/vdsm/virt/vm.py", line 2353, in preparePaths
> drive['path'] = self.cif.prepareVolumePath(drive, self.id)
> File "/usr/share/vdsm/clientIF.py", line 277, in prepareVolumePath
> raise vm.VolumeError(drive)
> VolumeError: Bad volume specification {u'index': 0, u'iface': u'virtio',
> u'type': u'disk', u'format': u'cow', u'bootOrder': u'1', u'address':
> {u'slot': u'0x06', u'bus': u'0x00', u'domain': u'0x0000', u'type': u'pci',
> u'function': u'0x0'}, u'volumeID': u'8791f6ec-a6ef-484d-bd5a-730b22b19250',
> 'apparentsize': '2696609792', u'imageID':
> u'eae65249-e5e8-49e7-90a0-c7385e80e6ca', u'specParams': {}, u'readonly':
> u'false', u'domainID': u'276e9ba7-e19a-49c5-8ad7-26711934d5e4', 'reqsize':
> '0', u'deviceId': u'eae65249-e5e8-49e7-90a0-c7385e80e6ca', 'truesize':
> '2696552448', u'poolID': u'0f954891-b1cd-4f09-99ae-75d404d95f9d', u'device':
> u'disk', u'shared': u'false', u'propagateErrors': u'off', u'optional':
> u'false'}
> Thread-5475::DEBUG::2015-05-21 18:27:24,117::vm::2786::vm.Vm::(setDownStatus)
> vmId=`24bd5074-64fc-4aa0-87cd-5de3dd7b50d1`::Changed state to Down: Bad
> volume specification {u'index': 0, u'iface': u'virtio', u'type': u'disk',
> u'format': u'cow', u'bootOrder': u'1', u'address': {u'slot': u'0x06',
> u'bus': u'0x00', u'domain': u'0x0000', u'type': u'pci', u'function':
> u'0x0'}, u'volumeID': u'8791f6ec-a6ef-484d-bd5a-730b22b19250',
> 'apparentsize': '2696609792', u'imageID':
> u'eae65249-e5e8-49e7-90a0-c7385e80e6ca', u'specParams': {}, u'readonly':
> u'false', u'domainID': u'276e9ba7-e19a-49c5-8ad7-26711934d5e4', 'reqsize':
> '0', u'deviceId': u'eae65249-e5e8-49e7-90a0-c7385e80e6ca', 'truesize':
> '2696552448', u'poolID': u'0f954891-b1cd-4f09-99ae-75d404d95f9d', u'device':
> u'disk', u'shared': u'false', u'propagateErrors': u'off', u'optional':
> u'false'} (code=1)
> —
> 
> The thing is, if i move that respective VM back to the old Cluster running
> Fedora 20 with the libvirt from the libvirt-preview repo, then the VM start
> with no problem.
> 
> That volume ‘8791f6ec-a6ef-484d-bd5a-730b22b19250’ does not exist
> 
> I experienced that problem with several Vms now – OS does not matter, also i
> check snapshots, there are none, i also tried cloning the VM and then moving
> it over, no luck either.
> 
> Any ideas where to look ?

Lets open a bug for this.

It would be useful to get engine database dump and engine and vdsm logs.

Nir

> 
> Regards
> Soeren
> 
> 
> 
> 
> From: < users-bounces at ovirt.org > on behalf of Soeren Malchow
> Date: Wednesday 20 May 2015 15:42
> To: "Bloemen, Jurriën", " users at ovirt.org "
> Subject: Re: [ovirt-users] Switch from Fedora 20 to CentOS 7.1
> 
> Great, thanks, that is the plan then
> 
> From: < users-bounces at ovirt.org > on behalf of "Bloemen, Jurriën"
> Date: Wednesday 20 May 2015 15:27
> To: " users at ovirt.org "
> Subject: Re: [ovirt-users] Switch from Fedora 20 to CentOS 7.1
> 
> Hi Soeren,
> 
> Yes! That works perfectly. Did it myself several times.
> 
> Regards,
> 
> Jurriën
> 
> On 20-05-15 14:19, Soeren Malchow wrote:
> 
> 
> 
> Hi Vered,
> 
> Thanks for the quick answer, ok, understood
> 
> Then i could create a new Cluster in the same datacenter with newly installed
> hosts and then migrate the machines through shutting them down in the old
> cluster and then starting them in the new cluster, only thing i loose is the
> live migration
> 
> Regards
> Soeren
> 
> 
> 
> On 20/05/15 14:04, "Vered Volansky" <vered at redhat.com> wrote:
> 
> 
> 
> Hi Soeren,
> 
> oVirt Clusters support one host distribution (all hosts must be of the same
> distribution).
> If the cluster is empty at one point, you can add a host of a different
> distribution than the cluster occupied before.
> But there can't be two type of distributions at the same time in one cluster.
> 
> Regards,
> Vered
> 
> ----- Original Message -----
> 
> 
> 
> From: "Soeren Malchow" <soeren.malchow at mcon.net> To: users at ovirt.org Sent:
> Wednesday, May 20, 2015 2:58:11 PM
> Subject: [ovirt-users] Switch from Fedora 20 to CentOS 7.1
> 
> Dear all,
> 
> Would it be possible to switch from fedora 20 to centos 7.1 (as far as i
> understood it has live merge support now) within one cluster, meaning
> 
> 
>     * take out one compute host
>     * Reinstall that compute host with Centos 7.1
>     * Do a hosted-engine —deploy
>     * Migrate VM to the CentOS 7.1 host
>     * Take the next fedora host and reinstall
> 
> Any experiences, recommendations or remarks on that ?
> 
> Regards
> Soeren
> 
> _______________________________________________
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