[jira] [Reopened] (CLOUDSTACK-5140) A stopped vm cant start after disable threshold has been reached on the storage pool

["Prachi Damle (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CLOUDSTACK-5140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Prachi Damle reopened CLOUDSTACK-5140:
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> A stopped vm cant start after disable threshold has been reached on the storage pool
> ------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-5140
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-5140
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Management Server
>    Affects Versions: 4.2.0, 4.3.0
>            Reporter: Prachi Damle
>            Assignee: Prachi Damle
>             Fix For: 4.2.1, 4.3.0
>
>
> Incorrect primary storage allocation behaviour:
> If a datastore reaches ‘disable threshold’ a stopped VM that was already on that datastore will refuse to start? Pre 4.2 thresholds were only applicable at the allocation time. 
> I still see the code is present in 4.2 and master as well that can cause this issue.
> Following highlighted code is what causes it:
> DeploymentPlanningMgrImpl :: findPotentialDeploymentResources () {
> ….
> if (hostCanAccessSPool(potentialHost, potentialSPool)) {
> hostCanAccessPool = true;
> if (multipleVolume)
> { List<Volume> requestVolumes = null; if (volumeAllocationMap.containsKey(potentialSPool)) requestVolumes = volumeAllocationMap.get(potentialSPool); else requestVolumes = new ArrayList<Volume>(); requestVolumes.add(vol); if (!_storageMgr.storagePoolHasEnoughSpace(requestVolumes, potentialSPool)) continue; volumeAllocationMap.put(potentialSPool, requestVolumes); }
> storage.put(vol, potentialSPool);
> haveEnoughSpace = true;
> break;
> }
> …
> }
> Issue is that this check should NOT be done for a Volume that is already created and exists on the pool.
> Happens with a VM having root and data volumes.



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