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https://issues.apache.org/jira/browse/CLOUDSTACK-5809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242873#comment-14242873
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Anton Onopriychuk commented on CLOUDSTACK-5809:
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but what's the sense behind storage overprovisioning in case
capacity.disablethreshold just dont allow to overprovision ?
> Not able to deploy Vm becasue of crossing pool.storage.allocate
> d.capacity.disablethreshold even though the threshold has not been reached in
> the primary store.
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CLOUDSTACK-5809
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-5809
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Management Server
> Affects Versions: 4.3.0
> Environment: Build from 4.3
> Reporter: Sangeetha Hariharan
> Assignee: edison su
> Fix For: 4.4.0, 4.5.0
>
>
> Not able to deploy Vm because of crossing pool.storage.allocate
> d.capacity.disablethreshold even though the threshold has not been reached in
> the primary store.
> Steps to reproduce the problem:
> Xenserver set up with 2 Xensserver hosts:
> In my case , Primary storage NFS has 222GB . (storage.overprovisioning.factor
> is set to 2).
> I tried to deploy 20 Vms with the same template that has Virtual size of
> 20.00 GB and actual size is about 10 GB.
> I was allowed to deploy only 17 Vms after which Vm deployment fails because
> of the following exception because of crossing pool.storage.allocate
> d.capacity.disablethreshold :
> 2014-01-06 17:34:21,881 DEBUG [c.c.s.StorageManagerImpl]
> (Job-Executor-32:ctx-2a944d7f ctx-6e9eaab0) Checking pool 1 for storage,
> totalSize: 2
> 37777190912, usedBytes: 88645566464, usedPct: 0.3728093772325169, disable
> threshold: 0.85
> 2014-01-06 17:34:21,885 DEBUG [c.c.s.StorageManagerImpl]
> (Job-Executor-32:ctx-2a944d7f ctx-6e9eaab0) Checking pool: 1 for volume
> allocation [V
> ol[24|vm=24|ROOT]], maxSize : 475554381824, totalAllocatedSize :
> 394411376640, askingSize : 21474836480, allocated disable threshold: 0.85
> 2014-01-06 17:34:21,886 DEBUG [c.c.s.StorageManagerImpl]
> (Job-Executor-32:ctx-2a944d7f ctx-6e9eaab0) Insufficient un-allocated
> capacity on: 1
> for volume allocation: [Vol[24|vm=24|ROOT]] since its allocated percentage:
> 0.8745292421128761 has crossed the allocated pool.storage.allocate
> d.capacity.disablethreshold: 0.85, skipping this pool
> Since Xenserver uses thin provisioning , the base copy of the template in
> primary is 10 GB. All the vhd entries of the Vms are very small and point to
> the base copy. We need to allocate only 10 GB space ( 20 GB (virtual size of
> template) - 10 gb ( actual size of tenplate) for each of these Vms , in
> addition to 10 GB for the base template copy.
> But we are allocating 20 GB for each of the Vms deployed.
> Reported Primary Storage capacity - 82 % - 367.32 GB / 442.89 GB
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