Copy template to target KVM host if needed when migrating local <> local storage by GabrielBrascher · Pull Request #3154 · apache/cloudstack

GabrielBrascher · 2019-01-28T20:03:00Z

PR #2997 allowed KVM VM live migration with ROOT volume on local storage (filesystem), if the template is already on the target host, the migration will be successful; however, if the VM template is not on the target host the migration fails.

This PR fixes the bug introduced by #2997, copying the VM template to the target host if needed.

Description

Types of changes

Breaking change (fix or feature that would cause existing functionality to change)
New feature (non-breaking change which adds functionality)
Bug fix (non-breaking change which fixes an issue)
Enhancement (improves an existing feature and functionality)
Cleanup (Code refactoring and cleanup, that may add test cases)

Screenshots (if appropriate):

How Has This Been Tested?

Tested migrating a VM to a host that did not download the template to its primary storage. The added code is then executed, copying the template to the target host/primary storage; after migrating the template, the execution flows keep as it was previously and the migration is succesfull.
Additionally, table template_spool_ref is correctly updated with the template reference matching with the target storage pool.
Successfully migrated a VM in the case where both storage pools (source and destiny host) have the VM template.

GabrielBrascher · 2019-01-28T20:03:35Z

@blueorangutan package

GabrielBrascher · 2019-01-28T20:09:17Z

@dhlaluku I could not add you on the requested reviewers list then I am pinging here ;)

GabrielBrascher · 2019-01-29T01:15:33Z

@blueorangutan package

blueorangutan · 2019-01-29T01:16:11Z

@GabrielBrascher a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress.

blueorangutan · 2019-01-29T02:32:26Z

Packaging result: ✔centos6 ✔centos7 ✔debian. JID-2576

GabrielBrascher · 2019-01-29T02:40:19Z

@blueorangutan test

blueorangutan · 2019-01-29T02:41:07Z

@GabrielBrascher a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests

DaanHoogland

overall neat code. some questions though

DaanHoogland · 2019-01-29T09:35:46Z

+
+ /**
+ * If the template is not on the target primary storage then it migrates the template.
+ * Otherwise the execution flow fails during migration and creates a null file created on the target storage pool.


this comments confuses me. you wrote in the description that the template would be copied and this problem would no longer be there. if that is true this "Otherwise ..." is not true or badly formulated. Can you explain?
As it is written now it seems that the condition after "Otherwise" can still occur.
If I understand this correctly you should start with "If we don't do this ...", or "This is needed to prevent ...". Am I correct?

You are right @DaanHoogland. I will remove the Otherwise the execution flow fails during migration and creates a null file created on the target storage pool. from the Javadoc and leave just the If the template is not on the target primary storage then it migrates the template.. Thanks for pointing it!

DaanHoogland · 2019-01-29T09:39:50Z

+ if (copyCommandAnswer.getDetails() != null) {
+ failureDetails = "; details: " + copyCommandAnswer.getDetails();
+ }
+ LOGGER.debug(String.format("Failed to copy template [id=%s, name=%s] to the primary storage pool [id=%s]%s", sourceTemplate.getId(), sourceTemplate.getName(),


seems like an 'ERROR' to me

I will update this to 'ERROR' I will also extract it to a method that returns the message, avoiding duplicated code.

DaanHoogland · 2019-01-29T09:41:25Z

+ Answer copyCommandAnswer = agentManager.send(destHost.getId(), copyCommand);
+ logInCaseOfTemplateCopyFailure(copyCommandAnswer, sourceTemplate, destDataStore);
+ } catch (AgentUnavailableException | OperationTimedoutException e) {
+ throw new CloudRuntimeException(String.format("Failed to copy template [id=%s, name=%s] to the primary storage pool [id=%s].", sourceTemplate.getId(),


why is this string constructed twice, here and in below logInCaseOfTemplateCopyFailure()?
they seem to describe the exact same thing

Extracted to a method 👍

DaanHoogland · 2019-01-29T09:42:26Z

 }

+ /**
+ * For this strategy it is not necessary to check and migrate the template; however, classes that extend this one may need to check if the template is on the target storage pool (and if not then migrate) before migrating the VM.


can you try to wrap this to fit in a github window?

DaanHoogland · 2019-01-29T09:45:34Z

+ * For this strategy it is not necessary to check and migrate the template; however, classes that extend this one may need to check if the template is on the target storage pool (and if not then migrate) before migrating the VM.
+ */
+ protected void migrateTemplateToTargetFilesystemStorageIfNeeded(VolumeInfo srcVolumeInfo, DataStore destDataStore, StoragePool destStoragePool, Host destHost) {
+ // This method is used by classes that extend this one


I am wary of this pattern. Can you explain why you implemented it this way? It seems you are implementing a pattern for genericity while already knowing it is only applicable for localstorage.

@DaanHoogland The class KvmNonManagedStorageDataMotionStrategy was implemented extending the StorageSystemDataMotionStrategy and adding methods such as this one in the superclass execution flow. This was the best that I could think regarding using the current architecture and easying future maintenance and extensions. Ideally, we should refactor this class structure and use proper O.O. However, that was not a simple task, and as such I think it is best executed separated from any new feature introduction.

DaanHoogland · 2019-01-29T09:48:18Z

 ConfigKey.Scope.Cluster,
 null);

+ ConfigKey<Integer> PRIMARY_STORAGE_DOWNLOAD_WAIT = new ConfigKey<Integer>("Storage", Integer.class, "primary.storage.download.wait", "10800",


isn't such a variable already in place somewhere? there are other places where it would have use. If not, I think it should be applied to the initial deploy equally.

Config.PrimaryStorageDownloadWait has this configuration indeed.
I can pick from there then and removed this one. However, on the other hand, Config.PrimaryStorageDownloadWait is deprecated. Should I use Config.PrimaryStorageDownloadWait, or remove the Config.PrimaryStorageDownloadWait and keep with the new ConfigKey<Integer>...?

I'd say keep your new one and find usages of the old one to unify them. If need be move the key to a more centralised place.

blueorangutan · 2019-01-29T11:16:04Z

Trillian test result (tid-3353)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 29187 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr3154-t3353-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_primary_storage.py
Intermittent failure detected: /marvin/tests/smoke/test_snapshots.py
Intermittent failure detected: /marvin/tests/smoke/test_vm_life_cycle.py
Intermittent failure detected: /marvin/tests/smoke/test_vpc_redundant.py
Intermittent failure detected: /marvin/tests/smoke/test_host_maintenance.py
Smoke tests completed. 66 look OK, 4 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File
test_01_add_primary_storage_disabled_host	`Error`	0.89	test_primary_storage.py
test_01_primary_storage_nfs	`Error`	0.15	test_primary_storage.py
ContextSuite context=TestStorageTags>:setup	`Error`	0.26	test_primary_storage.py
test_02_list_snapshots_with_removed_data_store	`Error`	1.17	test_snapshots.py
test_11_migrate_vm	`Error`	19.01	test_vm_life_cycle.py
test_14_secure_to_secure_vm_migration	`Error`	61.78	test_vm_life_cycle.py
test_01_cancel_host_maintenace_with_no_migration_jobs	`Failure`	0.14	test_host_maintenance.py
test_02_cancel_host_maintenace_with_migration_jobs	`Error`	2.40	test_host_maintenance.py

GabrielBrascher · 2019-01-29T13:46:15Z

@DaanHoogland I will ping you when updating the code. Thanks for the review!

Fix KVM VM local storage live migration by migrating its template to the target host if needed.

GabrielBrascher · 2019-02-01T06:31:36Z

@blueorangutan package

blueorangutan · 2019-02-01T06:43:20Z

@GabrielBrascher a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress.

blueorangutan · 2019-02-01T06:51:18Z

Packaging result: ✖centos6 ✖centos7 ✖debian. JID-2587

GabrielBrascher · 2019-02-01T10:37:01Z

@blueorangutan package

blueorangutan · 2019-02-01T10:37:21Z

@GabrielBrascher a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress.

blueorangutan · 2019-02-01T10:48:39Z

Packaging result: ✖centos6 ✖centos7 ✖debian. JID-2589

GabrielBrascher · 2019-02-01T11:29:27Z

@blueorangutan package

blueorangutan · 2019-02-01T11:30:20Z

@GabrielBrascher a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress.

blueorangutan · 2019-02-01T11:50:28Z

Packaging result: ✔centos6 ✔centos7 ✔debian. JID-2591

GabrielBrascher · 2019-02-01T11:55:48Z

@blueorangutan test

blueorangutan · 2019-02-01T11:56:20Z

@GabrielBrascher a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests

blueorangutan · 2019-02-01T17:45:55Z

Trillian test result (tid-3368)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 19505 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr3154-t3368-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_primary_storage.py
Intermittent failure detected: /marvin/tests/smoke/test_snapshots.py
Intermittent failure detected: /marvin/tests/smoke/test_vm_life_cycle.py
Intermittent failure detected: /marvin/tests/smoke/test_host_maintenance.py
Smoke tests completed. 66 look OK, 4 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File
test_01_add_primary_storage_disabled_host	`Error`	0.51	test_primary_storage.py
test_01_primary_storage_nfs	`Error`	0.08	test_primary_storage.py
ContextSuite context=TestStorageTags>:setup	`Error`	0.15	test_primary_storage.py
test_02_list_snapshots_with_removed_data_store	`Error`	1.11	test_snapshots.py
test_11_migrate_vm	`Error`	38.09	test_vm_life_cycle.py
test_14_secure_to_secure_vm_migration	`Error`	39.51	test_vm_life_cycle.py
test_15_secured_to_nonsecured_vm_migration	`Error`	78.12	test_vm_life_cycle.py
test_01_cancel_host_maintenace_with_no_migration_jobs	`Failure`	1.09	test_host_maintenance.py
test_02_cancel_host_maintenace_with_migration_jobs	`Error`	3.24	test_host_maintenance.py

GabrielBrascher · 2019-02-01T18:22:52Z

@blueorangutan package

blueorangutan · 2019-02-01T18:23:22Z

@GabrielBrascher a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress.

blueorangutan · 2019-02-01T18:43:38Z

Packaging result: ✔centos6 ✔centos7 ✔debian. JID-2592

GabrielBrascher · 2019-02-01T19:22:08Z

@blueorangutan test

blueorangutan · 2019-02-01T19:22:22Z

@GabrielBrascher a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests

blueorangutan · 2019-02-02T01:32:32Z

Trillian test result (tid-3369)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 20578 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr3154-t3369-kvm-centos7.zip
Smoke tests completed. 70 look OK, 0 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File

dhlaluku

LGTM

GabrielBrascher · 2019-02-04T13:18:03Z

@blueorangutan package

blueorangutan · 2019-02-04T13:18:34Z

@GabrielBrascher a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress.

GabrielBrascher · 2019-02-04T13:18:58Z

Thanks for the review, @DaanHoogland! Are you ok with the updated code addressing your requests?

blueorangutan · 2019-02-04T13:39:06Z

Packaging result: ✔centos6 ✔centos7 ✔debian. JID-2596

GabrielBrascher · 2019-02-04T14:02:57Z

@blueorangutan test

blueorangutan · 2019-02-04T14:03:35Z

@GabrielBrascher a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests

blueorangutan · 2019-02-05T11:42:16Z

Trillian test result (tid-3375)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 15686 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr3154-t3375-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_public_ip_range.py
Intermittent failure detected: /marvin/tests/smoke/test_reset_vm_on_reboot.py
Intermittent failure detected: /marvin/tests/smoke/test_resource_accounting.py
Intermittent failure detected: /marvin/tests/smoke/test_router_dhcphosts.py
Intermittent failure detected: /marvin/tests/smoke/test_router_dns.py
Intermittent failure detected: /marvin/tests/smoke/test_router_dnsservice.py
Intermittent failure detected: /marvin/tests/smoke/test_routers_iptables_default_policy.py
Intermittent failure detected: /marvin/tests/smoke/test_routers_network_ops.py
Intermittent failure detected: /marvin/tests/smoke/test_routers.py
Intermittent failure detected: /marvin/tests/smoke/test_secondary_storage.py
Intermittent failure detected: /marvin/tests/smoke/test_service_offerings.py
Intermittent failure detected: /marvin/tests/smoke/test_snapshots.py
Intermittent failure detected: /marvin/tests/smoke/test_ssvm.py
Intermittent failure detected: /marvin/tests/smoke/test_templates.py
Intermittent failure detected: /marvin/tests/smoke/test_usage.py
Intermittent failure detected: /marvin/tests/smoke/test_vm_life_cycle.py
Intermittent failure detected: /marvin/tests/smoke/test_vm_snapshots.py
Intermittent failure detected: /marvin/tests/smoke/test_volumes.py
Intermittent failure detected: /marvin/tests/smoke/test_vpc_redundant.py
Intermittent failure detected: /marvin/tests/smoke/test_vpc_router_nics.py
Intermittent failure detected: /marvin/tests/smoke/test_vpc_vpn.py
Smoke tests completed. 50 look OK, 20 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File
ContextSuite context=TestResetVmOnReboot>:setup	`Error`	0.00	test_reset_vm_on_reboot.py
ContextSuite context=TestRAMCPUResourceAccounting>:setup	`Error`	0.00	test_resource_accounting.py
ContextSuite context=TestRouterDHCPHosts>:setup	`Error`	0.00	test_router_dhcphosts.py
ContextSuite context=TestRouterDHCPOpts>:setup	`Error`	0.00	test_router_dhcphosts.py
ContextSuite context=TestISOUsage>:setup	`Error`	0.00	test_usage.py
ContextSuite context=TestLBRuleUsage>:setup	`Error`	0.00	test_usage.py
ContextSuite context=TestNatRuleUsage>:setup	`Error`	0.00	test_usage.py
ContextSuite context=TestPublicIPUsage>:setup	`Error`	0.00	test_usage.py
ContextSuite context=TestSnapshotUsage>:setup	`Error`	0.00	test_usage.py
ContextSuite context=TestVmUsage>:setup	`Error`	0.00	test_usage.py
ContextSuite context=TestVolumeUsage>:setup	`Error`	0.00	test_usage.py
ContextSuite context=TestVpnUsage>:setup	`Error`	0.00	test_usage.py
ContextSuite context=TestRouterDns>:setup	`Error`	0.00	test_router_dns.py
ContextSuite context=TestRouterDnsService>:setup	`Error`	0.00	test_router_dnsservice.py
ContextSuite context=TestRouterIpTablesPolicies>:setup	`Error`	0.00	test_routers_iptables_default_policy.py
ContextSuite context=TestVPCIpTablesPolicies>:setup	`Error`	0.00	test_routers_iptables_default_policy.py
test_01_isolate_network_FW_PF_default_routes_egress_true	`Error`	0.16	test_routers_network_ops.py
test_02_isolate_network_FW_PF_default_routes_egress_false	`Error`	0.18	test_routers_network_ops.py
ContextSuite context=TestRedundantIsolateNetworks>:setup	`Error`	1.35	test_routers_network_ops.py
ContextSuite context=TestRouterServices>:setup	`Error`	0.00	test_routers.py
test_01_sys_vm_start	`Failure`	0.11	test_secondary_storage.py
ContextSuite context=TestCpuCapServiceOfferings>:setup	`Error`	0.00	test_service_offerings.py
ContextSuite context=TestServiceOfferings>:setup	`Error`	0.18	test_service_offerings.py
ContextSuite context=TestSnapshotRootDisk>:setup	`Error`	0.00	test_snapshots.py
test_01_list_sec_storage_vm	`Failure`	0.05	test_ssvm.py
test_02_list_cpvm_vm	`Failure`	0.04	test_ssvm.py
test_03_ssvm_internals	`Failure`	0.04	test_ssvm.py
test_04_cpvm_internals	`Failure`	0.04	test_ssvm.py
test_05_stop_ssvm	`Failure`	0.04	test_ssvm.py
test_06_stop_cpvm	`Failure`	0.04	test_ssvm.py
test_07_reboot_ssvm	`Failure`	0.04	test_ssvm.py
test_08_reboot_cpvm	`Failure`	0.03	test_ssvm.py
test_09_destroy_ssvm	`Failure`	0.04	test_ssvm.py
test_10_destroy_cpvm	`Failure`	0.04	test_ssvm.py
test_02_create_template_with_checksum_sha1	`Error`	65.46	test_templates.py
test_03_create_template_with_checksum_sha256	`Error`	65.46	test_templates.py
test_04_create_template_with_checksum_md5	`Error`	65.44	test_templates.py
test_05_create_template_with_no_checksum	`Error`	65.44	test_templates.py
test_02_deploy_vm_from_direct_download_template	`Error`	1.28	test_templates.py
test_03_deploy_vm_wrong_checksum	`Error`	1.36	test_templates.py
ContextSuite context=TestTemplates>:setup	`Error`	17.66	test_templates.py
ContextSuite context=Test01DeployVM>:setup	`Error`	0.00	test_vm_life_cycle.py
ContextSuite context=Test02VMLifeCycle>:setup	`Error`	0.00	test_vm_life_cycle.py
test_14_secure_to_secure_vm_migration	`Error`	11.40	test_vm_life_cycle.py
test_15_secured_to_nonsecured_vm_migration	`Error`	84.62	test_vm_life_cycle.py
test_16_nonsecured_to_secured_vm_migration	`Error`	1.26	test_vm_life_cycle.py
ContextSuite context=TestVmSnapshot>:setup	`Error`	2.03	test_vm_snapshots.py
ContextSuite context=TestCreateVolume>:setup	`Error`	0.00	test_volumes.py
ContextSuite context=TestVolumes>:setup	`Error`	0.00	test_volumes.py
test_01_create_redundant_VPC_2tiers_4VMs_4IPs_4PF_ACL	`Error`	2.93	test_vpc_redundant.py
test_02_redundant_VPC_default_routes	`Error`	1.92	test_vpc_redundant.py
test_03_create_redundant_VPC_1tier_2VMs_2IPs_2PF_ACL_reboot_routers	`Error`	1.90	test_vpc_redundant.py
test_04_rvpc_network_garbage_collector_nics	`Error`	5.01	test_vpc_redundant.py
test_05_rvpc_multi_tiers	`Error`	2.93	test_vpc_redundant.py
test_01_VPC_nics_after_destroy	`Error`	4.95	test_vpc_router_nics.py
test_02_VPC_default_routes	`Error`	3.96	test_vpc_router_nics.py
test_01_redundant_vpc_site2site_vpn	`Failure`	2.32	test_vpc_vpn.py
test_01_vpc_site2site_vpn_multiple_options	`Failure`	3.31	test_vpc_vpn.py
test_01_vpc_remote_access_vpn	`Failure`	1.18	test_vpc_vpn.py
test_01_vpc_site2site_vpn	`Failure`	2.31	test_vpc_vpn.py

GabrielBrascher added type:bug component:kvm Severity:BLOCKER labels Jan 28, 2019

GabrielBrascher added this to the 4.12.0.0 milestone Jan 28, 2019

GabrielBrascher self-assigned this Jan 28, 2019

GabrielBrascher requested review from DaanHoogland, mike-tutkowski, nvazquez, rafaelweingartner, wido and yadvr January 28, 2019 20:03

GabrielBrascher force-pushed the copy-template-on-host-kvm-local-migration branch 4 times, most recently from 7bc0d48 to 8ec40e8Compare January 29, 2019 03:56

DaanHoogland reviewed Jan 29, 2019
View reviewed changes

GabrielBrascher mentioned this pull request Jan 29, 2019
KVM live storage migration intra cluster from NFS source and destination #2983
Merged
5 tasks

Migrate template to target host if needed.
28af880
Fix KVM VM local storage live migration by migrating its template to the target host if needed.

GabrielBrascher force-pushed the copy-template-on-host-kvm-local-migration branch from 8ec40e8 to 48c08a2Compare February 1, 2019 06:18

Address reviewer and add method that updates the DB template reference
f744744

GabrielBrascher force-pushed the copy-template-on-host-kvm-local-migration branch from 20550e4 to ce0747dCompare February 1, 2019 10:36

Code formating of@Injectto follow checkstyle
6507741

GabrielBrascher force-pushed the copy-template-on-host-kvm-local-migration branch from ce0747d to 6507741Compare February 1, 2019 11:28

rafaelweingartner approved these changes Feb 2, 2019
View reviewed changes

dhlaluku approved these changes Feb 4, 2019
View reviewed changes

GabrielBrascher merged commit 7c5eca9 into apache:masterFeb 5, 2019

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Description

Types of changes

Screenshots (if appropriate):

How Has This Been Tested?

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