This PR introduces volume encryption option to service offerings and disk offerings. Fixes#136
There is a hypervisor component and a storage pool component. Hypervisors are responsible for being capable of running/using the encrypted volumes. Storage pools are responsible for being able to create, copy, resize, etc. Hypervisors will report encryption support in their details, storage pools are marked for encryption support by pool type.
The initial offering for experimental release of this feature will have support for encryption on Local, NFS, SharedMountPoint, and ScaleIO storage types.
When volumes choosing an encrypted offering are allocated to a pool, the pool type must be capable of supporting encryption and this is enforced.
When VMs are started and they have an encrypted volume, the hypervisor must be capable of supporting encryption. Also, if volumes are attached to running VMs, the attach will only work if the hypervisor supports encryption.
This change includes a few other minor changes - for example the ability to force the KVM hypervisor private IP. This was necessary in my testing of ScaleIO, where the KVM hypervisors had multiple IPs and the ScaleIO storage only functions if the hypervisor as a ScaleIO client matches IPs with what CloudStack sees as the hypervisor IP.
For experimental release of this feature, some volume workflows like extract volume and migrate volume aren't supported for encrypted volumes. In the future we could support these, as well as migrating from unencrypted to encrypted offerings, and vice versa.
It may also be possible to configure encryption specifics in the future, perhaps at the pool level or the offering level. Currently, there is only one workable encryption offering for KVM that is supported by Libvirt and Qemu for raw and qcow2 disk files, LUKS version 1. This PR ensures we at least store this encryption format associated with each volume, with the expectation that later we may have LUKS v2 volumes or something else. Thus we will have the information necessary to use each volume with Libvirt if/when other formats are introduced.
I think the most disruptive change here is probably a refactoring of the QemuImg utility to support newer flags like --object. I've tested the change against the basic Qemu 1.5.3 that comes with EL7 and I believe it is good, but it will be nice to see the results of some functional tests. Most of the other changes are limited to changing behavior only if volume encryption is requested.
Working on documentation for the CloudStack docs. One thing to note is that hypervisors that run the stock EL7 version of Qemu will not support encryption. This is tested to be detected and report properly via the CloudStack API/UI. I intend to like to have a support matrix in the CloudStack docs.
I may add a few more unit tests. I'd also like some guidance on having functional tests. I'm not sure if there's a separate framework, or if Marvin is still used, or what the current thing is.
* Add Qemu object flag to QemuImg create
* Add apache license header to new files
* Add Qemu object flag to QemuImg convert
* Set host details if hypervisor supports LUKS
* Add disk encrypt flag to APIs, diskoffering
* Schema upgrade 4.16.0.0 to 4.16.1.0 to support vol encryption
* Add Libvirt secret on disk attach, and refer to it in disk XML
* Add implementation of luks volume encryption to QCOW2 and RAW disk prep
* Start VMs that have encrypted volumes
* Add encrypt option to service offering and root volume provisioning
* Refactor volume passphrase into its own table and object
* CryptSetup, use key files to pass keys instead of command line
* Update storage types and allocators to select encryption support
* Allow agent.properties to define the hypervisor's private IP
* Implement createPhysicalDisk for ScaleIOStorageAdaptor
* UI: Add encrypt options to offerings
* UI module security updates
* Revert "UI module security updates" - belongs in base
This reverts commit a7cb7cf7f57aad38f0b5e5d67389c187b88ffd94.
* Add --target-is-zero support for QemuImg
* Allow qemu image options to be passed, API support convert encrypted
* Switch hypervisor encryption support detection to use KeyFiles
* Fixes for ScaleIO root disk encryption
* Resize root disk if it won't fit encryption header
* Use cryptsetup to prep raw root disks, when supported
* Create qcow2 formatting if necessary during initial template copy to ScaleIO
* Allow setting no cache for qemu-img during disk convert
* Use 1M sparse on qemu-img convert for zero target disks
* UI: Add volume encryption support to hypervisor details
* QemuImg use --image-opts and --object depending on version
* Only send storage commands that require encryption to hosts that support encryption
* Move host encryption detail to a static constant
* Update host selection to account for volume encryption support
Only attach volumes if encryption requirements are met
* Ensure resizeVolume won't allow changing encryption
* Catch edge cases for clearing passphrase when volume is removed
* Disable volume migration and extraction for encrypted volumes
* Register volume secret on destination host during live migration
* Fix configdrive path editing during live migration
* Ensure configdrive path is edited properly during live migration
* Pass along and store volume encryption format during creation
* Fixes for rebase
* Fix tests after rebase
* Add unit tests for DeploymentPlanningManagerImpl to support encryption
* Deployment planner tests for encryption support on last host
* Add deployment tests for encryption when calling planner
* Added Libvirt DiskDef test for encryption details
* Add test for KeyFile utility
* Add CryptSetup tests
* Add QemuImageOptionsTest
* add smoke tests for API level changes on create/list offerings
* Fix schema upgrade, do disk_offering_view first
* Fix UI to show hypervisor encryption support
* Load details into hostVO before trying to query them for encryption
* Remove whitespace in CreateNetworkOfferingTest
* Move QemuImageOptions to use constants for flag keys
* Set physical disk encrypt format during createDiskFromTemplate in KVM Agent
* Whitespace in AbstractStoragePoolAllocator
* Fix whitespace in VolumeDaoImpl
* Support old Qemu in convert
* Log how long it takes to generate a passphrase during volume creation
* Move passphrase generation to async portion of createVolume
* Revert "Allow agent.properties to define the hypervisor's private IP"
This reverts commit 6ea9377505f0e5ff9839156771a241aaa1925e70.
* Updated ScaleIO/PowerFlex storage plugin to support separate (storage) network for Host(KVM) SDC connection. (#144)
* Added smoke tests for volume encryption (in KVM). (#149)
* Updated ScaleIO pool unit tests.
* Some improvements/fixes for code smells (in ScaleIO storage plugin).
* Updated review changes for ScaleIO improvements.
* Updated host response parameter 'encryptionsupported' in the UI.
* Move passphrase generation for the volume to async portion, while deploying VM (#158)
* Move passphrase generation for the volume to async portion, while deploying VM.
* Updated logs, to include volume details.
* Fix schema upgrade, create passphrase table first
* Fixed the DB upgrade issue (as noticed in the logs below.)
DEBUG [c.c.u.d.ScriptRunner] (main:null) (logid:) CALL `cloud`.`IDEMPOTENT_ADD_FOREIGN_KEY`('cloud.volumes', 'passphrase', 'id')
ERROR [c.c.u.d.ScriptRunner] (main:null) (logid:) Error executing: CALL `cloud`.`IDEMPOTENT_ADD_FOREIGN_KEY`('cloud.volumes', 'passphrase', 'id')
ERROR [c.c.u.d.ScriptRunner] (main:null) (logid:) java.sql.SQLException: Failed to open the referenced table 'passphrase'
ERROR [c.c.u.DatabaseUpgradeChecker] (main:null) (logid:) Unable to execute upgrade script
* Fixes for snapshots with encrypted qcow2
Fixes#159#160#163
* Support create/delete encrypted snapshots of encrypted qcow2 volumes
* Select endpoints that support encryption when snapshotting encrypted volumes
* Update revert snapshot to be compatible with encrypted snapshots
* Disallow volume and template create from encrypted vols/snapshots
* Disallow VM memory snapshots on encrypted vols. Fixes#157
* Fix for TemplateManagerImpl unit test failure
* Support offline resize of encrypted volumes. Fixes#168
* Fix for resize volume unit tests
* Updated libvirt resize volume unit tests
* Support volume encryption on kvm only, and passphrase generation refactor (#169)
* Fail deploy VM when ROOT/DATA volume's offering has encryption enabled, on non-KVM hypervisors
* Fail attach volume when volume's offering has encryption enabled, on non-KVM hypervisors
* Refactor passphrase generation for volume
* Apply encryption to dest volume for live local storage migration
fixes#161
* Apply encryption to data volumes during live storage migration
Fixes#161
* Use the same encryption passphrase id for migrating volumes
* Pass secret consumer during storage migration prepare
Fix for #161
* Fixes create / delete volume snapshot issue, for stopped VMs
* Block volume snapshot if encrypted and VM is running
Fixes#159
* Block snap schedules on encrypted volumes
Fix for #159
* Support cryptsetup where luks type defaults to 2
Fixes#170
* Modify domain XML secret UUID when storage migrating VM
Fix for #172
* Remove any libvirt secrets on VM stop and post migration
Fix for #172
* Update disk profile with encryption requirement from the disk offering (#176)
Update disk profile with encryption requirement from the disk offering
and some code improvements
* Updated review changes / javadoc in ScaleIOUtil
Co-authored-by: Marcus Sorensen <mls@apple.com>
Co-authored-by: Suresh Kumar Anaparti <sureshkumar.anaparti@gmail.com>
Co-authored-by: Suresh Kumar Anaparti <suresh.anaparti@shapeblue.com>
* Check the pool used space from the bytes used in the storage pool stats collector, for non-default primary storage pools that cannot provide stats.
Also, Update the used bytes from the pool stats answer for non-default primary storage pools if the pool can provide stats.
* Update server/src/main/java/com/cloud/storage/StorageManagerImpl.java
Co-authored-by: Daniel Augusto Veronezi Salvador <38945620+GutoVeronezi@users.noreply.github.com>
* space fix
Co-authored-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Co-authored-by: Daniel Augusto Veronezi Salvador <38945620+GutoVeronezi@users.noreply.github.com>
* Extend addAnnotation and listAnnotations APIs
* Allow users to add, list and remove comments
* Add adminsonly UI and allow admins or owners to remove comments
* New annotations tab
* In progress: new comments section
* Address review comments
* Fix
* Fix annotationfilter and comments section
* Add keyword and delete action
* Fix and rename annotations tab
* Update annotation visibility API and update comments table accordingly
* Allow users seeing all the comments for their owned resources
* Extend comments for volumes and snapshots
* Extend comments to multiple entities
* Add uuid to ssh keypairs
* SSH keypair UI refactor
* Extend comments to the infrastructure entities
* Add missing entities
* Fix upgrade version for ssh keypairs
* Fix typo on DB upgrade schema
* Fix annotations table columns when there is no data
* Extend the list view of items showing they if they have comments
* Remove extra test
* Add annotation permissions
* Address review comments
* Extend marvin tests for annotations
* updating ui stuff
* addition to toggle visibility
* Fix pagination on comments section
* Extend to kubernetes clusters
* Fixes after last review
* Change default value for adminsonly column
* Remove the required field for the annotationfilter parameter
* Small fixes on visibility and other fixes
* Cleanup to reduce files changed
* Rollback extra line
* Address review comments
* Fix cleanup error on smoke test
* Fix sending incorrect parameter to checkPermissions method
* Add check domain access for the calling account for domain networks
* Fix only display annotations icon if there are comments the user can see
* Simply change the Save button label to Submit
* Change order of the Tools menu to provent users getting 404 error on clicking the text instead of expanding
* Remove comments when removing entities
* Address review comments on marvin tests
* Allow users to list annotations for an entity ID
* Allow users to see all comments for allowed entities
* Fix search filters
* Remove username from search filter
* Add pagination to the annotations tab
* Display username for user comments
* Fix add permissions for domain and resource admins
* Fix for domain admins
* Trivial but important UI fix
* Replace pagination for annotations tab
* Add confirmation for delete comment
* Lint warnings
* Fix reduced list as domain admin
* Fix display remove comment button for non admins
* Improve display remove action button
* Remove unused parameter on groupShow
* Include a clock icon to the all comments filter except for root admin
* Move cleanup SQL to the correct file after rebasing main
Co-authored-by: davidjumani <dj.davidjumani1994@gmail.com>
* Global setting to select preferred storage pool
Currently all the volumes are allocated on storage pools
based on the capacity or the algorithm selected. Sometimes
we need to deploy all volumes of particular account in a
specific storage pool and in that case its not possible.
with this change, we can specify the uuid of the preferred
storage pool, so that all volumes of the account will be
deployed in this pool
* code feedback
Co-authored-by: Rakesh Venkatesh <rakeshv@apache.org>
* server: skip zone check for PERHOST iso during attachIso
Hypervisor tools ISO - vmware-toools.iso, xs-tools.iso are marked as PERHOST in DB. They are active but not downloaded to the secondary storages and hence no template-zone entry.
Skips the template-zone check for such templates.
Fixes#5265
Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
* inverted check
* use constants in TemplateManager
Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
* Added disk provisioning type support for VMWare
* Review changes
* Fixed unit test
* Review changes
* Added missing licenses
* Review changes
* Update StoragePoolInfo.java
Removed white space
* Review change - Getting disk provisioning strictness setting using the zone id and not the pool id
* Delete __init__.py
* Merge fix
* Fixed failing test
* Added comment about parameters
* Added error log when update fails
* Added exception when using API
* Ordering storage pool selection to prefer thick disk capable pools if available
* Removed unused parameter
* Reordering changes
* Returning storage pool details after update
* Removed multiple pool update, updated marvin test, removed duplicate enum
* Removed comment
* Removed unused import
* Removed for loop
* Added missing return statements for failed checks
* Class name change
* Null pointer
* Added more info when a deployment fails
* Null pointer
* Update api/src/main/java/org/apache/cloudstack/api/BaseListCmd.java
Co-authored-by: dahn <daan.hoogland@gmail.com>
* Small bug fix on API response and added missing bracket
* Removed datastore cluster code
* Removed unused imports, added missing signature
* Removed duplicate config key
* Revert "Added more info when a deployment fails"
This reverts commit 2486db78dca8e034d8ad2386174dfb11004ce654.
Co-authored-by: dahn <daan.hoogland@gmail.com>
* Externalize secondary storage capacity threshold
* Use default value as threshold when config value is lower than 0.0
* Move config to CapacityManager
* Validate config in CapacityManagerImpl
* Use config in StorageOrchestrator
* Change config description
* Remove unused import
Co-authored-by: Daniel Augusto Veronezi Salvador <daniel@scclouds.com.br>
- Added connection manager to the gateway client.
- Renew the client session on '401 Unauthorized' response.
- Refactored the gateway client calls, for GET and POST methods.
- Consume the http entity content after login/(re)authentication and close the content stream if exists.
- Updated storage pool client connection timeout configuration 'storage.pool.client.timeout' to non-dynamic.
- Added storage pool client max connections configuration 'storage.pool.client.max.connections' (default: 100) to specify the maximum connections for the ScaleIO storage pool client.
- Updated unit tests.
and blocked the attach volume operation for uploaded volume on ScaleIO/PowerFlex storage pool
* forceha: fix vm is not started if it is poweroff from inside
steps to reproduce the issue
(1) make sure force.ha is true in global setting. if not, change it to true, and restart mgt server
(2) create a service offering , ha is not enabled
(3) create a vm
(4) log into the vm, and power off via cli.
expected result: vm is started again by cloudstack
actual result: vm is not started.
* forceha: fix vms are still running if host is force-removed
when host can be force removed, however vms are stopped in cloudstack, but not stopped on host
```
(localcloud) 🐱 > delete host id="a5625393-444d-4d0a-b31d-62baf88a8be1" forced=true
{
"success": true
}```
after some minutes, vms are still runnning on host
```
root@mgt01:~# ssh node63 virsh list
Id Name State
---------------------------
1 i-2-19-VM running
2 i-2-11-VM running
```
error message are
```
Cannot transmit host 2 to Enabled state
com.cloud.utils.fsm.NoTransitionException: No next resource state found for current state = Enabled event = DeleteHost
at com.cloud.resource.ResourceManagerImpl.resourceStateTransitTo(ResourceManagerImpl.java:1216)
at com.cloud.resource.ResourceManagerImpl$1.doInTransactionWithoutResult(ResourceManagerImpl.java:907)
```
* forceha: Make ForceHA dynamic
Datastore cluster as a primary storage support is already there. But if any changes at vCenter to datastore cluster like addition/removal of datastore is not synchronised with CloudStack directly. It needs removal of primary storage from CloudStack and add it again to CloudStack.
Here synchronisation of datastore cluster is fixed without need to remove or add the datastore cluster.
1. A new API is introduced syncStoragePool which takes datastore cluster storage pool UUID as the parameter. This API checks if there any changes in the datastore cluster and updates management server accordingly.
2. During synchronisation if a new child datastore is found in datastore cluster, then management server will create a new child storage pool in database under the datastore cluster. If the new child storage pool is already added as an individual storage pool then the existing storage pool entry will be converted to child storage pool (instead of creating a new storage pool entry)
3. During synchronisaton if the existing child datastore in CloudStack is found to be removed on vCenter then management server removes that child datastore from datastore cluster and makes it an individual storage pool.
The above behaviour is on par with the vCenter behaviour when adding and removing child datastore.
Fixes#4517
Adds capacity checks for RandomAllocator (host allocator)
Factors out host cpu capability and capacity check wrt serviceoffering code into CapacityManager.
Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
Public IP addresses dedicated to one domain should not be accessed
by other domains. Also, root admin should be able to display all
public ip addresses in system.
Currently following issues exist
1. Public IP address assigned to one domain can be accessed by
other sibling domains
If use.system.public.ip is false then child domains should not
see public ip of ROOT domain
Before fix
```
(test1) mgt01 > list publicipaddresses listall=true fordisplay=true allocatedonly=false forvirtualnetwork=true filter=ipaddress,
{
"count": 59,
"publicipaddress": [
```
After fix
```
(test) mgt01 > list publicipaddresses listall=true fordisplay=true allocatedonly=false forvirtualnetwork=true filter=ipaddress,
{
"count": 10,
```
Added support for PowerFlex/ScaleIO (v3.5 onwards) storage pool as a primary storage in CloudStack (for KVM hypervisor) and enabled VM/Volume operations on that pool (using pool tag).
Please find more details in the FS here:
https://cwiki.apache.org/confluence/x/cDl4CQ
Documentation PR: apache/cloudstack-documentation#169
This enables support for PowerFlex/ScaleIO (v3.5 onwards) storage pool as a primary storage in CloudStack
Other improvements addressed in addition to PowerFlex/ScaleIO support:
- Added support for config drives in host cache for KVM
=> Changed configuration "vm.configdrive.primarypool.enabled" scope from Global to Zone level
=> Introduced new zone level configuration "vm.configdrive.force.host.cache.use" (default: false) to force host cache for config drives
=> Introduced new zone level configuration "vm.configdrive.use.host.cache.on.unsupported.pool" (default: true) to use host cache for config drives when storage pool doesn't support config drive
=> Added new parameter "host.cache.location" (default: /var/cache/cloud) in KVM agent.properties for specifying the host cache path and create config drives on the "/config" directory on the host cache path
=> Maintain the config drive location and use it when required on any config drive operation (migrate, delete)
- Detect virtual size from the template URL while registering direct download qcow2 (of KVM hypervisor) templates
- Updated full deployment destination for preparing the network(s) on VM start
- Propagate the direct download certificates uploaded to the newly added KVM hosts
- Discover the template size for direct download templates using any available host from the zones specified on template registration
=> When zones are not specified while registering template, template size discovery is performed using any available host, which is picked up randomly from one of the available zones
- Release the VM resources when VM is sync-ed to Stopped state on PowerReportMissing (after graceful period)
- Retry VM deployment/start when the host cannot grant access to volume/template
- Mark never-used or downloaded templates as Destroyed on deletion, without sending any DeleteCommand
=> Do not trigger any DeleteCommand for never-used or downloaded templates as these doesn't exist and cannot be deleted from the datastore
- Check the router filesystem is writable or not, before performing health checks
=> Introduce a new test "filesystem.writable.test" to check the filesystem is writable or not
=> The router health checks keeps the config info at "/var/cache/cloud" and updates the monitor results at "/root" for health checks, both are different partitions. So, test at both the locations.
=> Added new script: "filesystem_writable_check.py" at /opt/cloud/bin/ to check the filesystem is writable or not
- Fixed NPE issue, template is null for DATA disks. Copy template to target storage for ROOT disk (with template id), skip DATA disk(s)
* Addressed some issues for few operations on PowerFlex storage pool.
- Updated migration volume operation to sync the status and wait for migration to complete.
- Updated VM Snapshot naming, for uniqueness in ScaleIO volume name when more than one volume exists in the VM.
- Added sync lock while spooling managed storage template before volume creation from the template (non-direct download).
- Updated resize volume error message string.
- Blocked the below operations on PowerFlex storage pool:
-> Extract Volume
-> Create Snapshot for VMSnapshot
* Added the PowerFlex/ScaleIO client connection pool to manage the ScaleIO gateway clients, which uses a single gateway client per Powerflex/ScaleIO storage pool and renews it when the session token expires.
- The token is valid for 8 hours from the time it was created, unless there has been no activity for 10 minutes.
Reference: https://cpsdocs.dellemc.com/bundle/PF_REST_API_RG/page/GUID-92430F19-9F44-42B6-B898-87D5307AE59B.html
Other fixes included:
- Fail the VM deployment when the host specified in the deployVirtualMachine cmd is not in the right state (i.e. either Resource State is not Enabled or Status is not Up)
- Use the physical file size of the template to check the free space availability on the host, while downloading the direct download templates.
- Perform basic tests (for connectivity and file system) on router before updating the health check config data
=> Validate the basic tests (connectivity and file system check) on router
=> Cleanup the health check results when router is destroyed
* Updated PowerFlex/ScaleIO storage plugin version to 4.16.0.0
* UI Changes to support storage plugin for PowerFlex/ScaleIO storage pool.
- PowerFlex pool URL generated from the UI inputs(Gateway, Username, Password, Storage Pool) when adding "PowerFlex" Primary Storage
- Updated protocol to "custom" for PowerFlex provider
- Allow VM Snapshot for stopped VM on KVM hypervisor and PowerFlex/ScaleIO storage pool
and Minor improvements in PowerFlex/ScaleIO storage plugin code
* Added support for PowerFlex/ScaleIO volume migration across different PowerFlex storage instances.
- findStoragePoolsForMigration API returns PowerFlex pool(s) of different instance as suitable pool(s), for volume(s) on PowerFlex storage pool.
- Volume(s) with snapshots are not allowed to migrate to different PowerFlex instance.
- Volume(s) of running VM are not allowed to migrate to other PowerFlex storage pools.
- Volume migration from PowerFlex pool to Non-PowerFlex pool, and vice versa are not supported.
* Fixed change service offering smoke tests in test_service_offerings.py, test_vm_snapshots.py
* Added the PowerFlex/ScaleIO volume/snapshot name to the paths of respective CloudStack resources (Templates, Volumes, Snapshots and VM Snapshots)
* Added new response parameter “supportsStorageSnapshot” (true/false) to volume response, and Updated UI to hide the async backup option while taking snapshot for volume(s) with storage snapshot support.
* Fix to remove the duplicate zone wide pools listed while finding storage pools for migration
* Updated PowerFlex/ScaleIO volume migration checks and rollback migration on failure
* Fixed the PowerFlex/ScaleIO volume name inconsistency issue in the volume path after migration, due to rename failure
Steps to reproduce the issue:
(1)Create 10000 service offerings (by db changes below or cloudmonkey).
```
DROP PROCEDURE IF EXISTS cloud.insert_service_offering;
DELIMITER $$
CREATE PROCEDURE cloud.insert_service_offering()
BEGIN
DECLARE count INT DEFAULT 10000;
SET @offeringid = (select max(id)+1 from disk_offering);
WHILE count > 0 DO
INSERT INTO disk_offering (id,name,uuid,display_text,disk_size,type,created) values (@offeringid,'test-offering-wei',uuid(), 'test-offering-wei',0,'Service',now());
INSERT INTO service_offering (id,cpu,speed,ram_size) values (@offeringid, 1, 500,256);
SET @offeringid = @offeringid + 1;
SET count = count - 1;
END WHILE;
END $$
DELIMITER ;
CALL cloud.insert_service_offering();
mysql> CALL cloud.insert_service_offering();
Query OK, 0 rows affected (2 min 30.85 sec)
```
(2) Check the total time of periodical capacity check in cloudstack.
Without this patch, it spend 2.5 seconds (2 hosts)
```
2021-01-15 16:10:12,793 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-5d5f3b3b) (logid:f5eb68ba) Running Capacity Checker ...
2021-01-15 16:10:15,287 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-5d5f3b3b) (logid:f5eb68ba) Done running Capacity Checker ...
```
With this patch ,it spend 1.3 seconds (2 hosts)
```
2021-01-15 16:12:43,604 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-a2a7f3f1) (logid:f7e0a4c5) Running Capacity Checker ...
2021-01-15 16:12:44,927 DEBUG [c.c.a.AlertManagerImpl] (CapacityChecker:ctx-a2a7f3f1) (logid:f7e0a4c5) Done running Capacity Checker ...
```
If there are 100 hosts, the total time will be reduced from 100+ seconds to around 10 seconds.
This feature enables the following:
Balanced migration of data objects from source Image store to destination Image store(s)
Complete migration of data
setting an image store to read-only
viewing download progress of templates across all data stores
Related Primate PR: apache/cloudstack-primate#326
