Deployment plan fixes for VM with last host, and last host in maintenance #12062

sureshanaparti · 2025-11-13T09:13:44Z

Description

This PR includes the following deployment plan fixes for VM with last host, and last host in maintenance.

Consider last host when it is not in maintenance
Continue deployment with other hosts when user requests for last host consideration and last host doesn't exists or in maintenance

Fixes #12045

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)
Build/CI
Test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

Major
Minor

Bug Severity

Screenshots (if appropriate):

How Has This Been Tested?

Tested with 4 x KVM hosts on a single cluster. Able to put a host in maintenance when 2 hosts are already in maintenance. VMs choose the available host for migration, and VMs are not stopped.

All Hosts are Up =>

mysql> SELECT id, uuid, name, status, resource_state FROM cloud.host WHERE type = 'Routing' AND removed IS NULL;
+----+--------------------------------------+------------------------------------------+--------+----------------+
| id | uuid                                 | name                                     | status | resource_state |
+----+--------------------------------------+------------------------------------------+--------+----------------+
|  1 | dfa467a0-fadf-4cfb-ad36-cdbfa57f0e17 | ref-trl-10139-k-Mr8-suresh-anaparti-kvm1 | Up     | Enabled        |
|  2 | d0463494-995c-463a-9d4b-72eb37dca9be | ref-trl-10139-k-Mr8-suresh-anaparti-kvm2 | Up     | Enabled        |
|  3 | 69054cd3-296e-4040-a3e9-7889274fde63 | ref-trl-10139-k-Mr8-suresh-anaparti-kvm3 | Up     | Enabled        |
|  4 | cd369b58-72a1-46f1-b5ac-158c2717776e | ref-trl-10139-k-Mr8-suresh-anaparti-kvm4 | Up     | Enabled        |
+----+--------------------------------------+------------------------------------------+--------+----------------+
4 rows in set (0.00 sec)

mysql> SELECT id, uuid, name, instance_name, host_id, last_host_id, state, power_state FROM cloud.vm_instance WHERE type = 'User' AND removed IS NULL;
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
| id | uuid                                 | name     | instance_name | host_id | last_host_id | state   | power_state |
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
|  4 | a5ec3d7d-aca5-4c20-b682-55f5ebacc8e3 | testvm01 | i-2-4-VM      |       1 |            1 | Running | PowerOn     |
|  6 | 791dec0a-cb68-4e22-a84d-1e0b76950766 | testvm02 | i-2-6-VM      |       4 |            4 | Running | PowerOn     |
|  7 | b5124b1e-b28f-4124-a7c3-8b268aa95188 | testvm04 | i-2-7-VM      |       2 |            2 | Running | PowerOn     |
|  9 | 7dc7aa3d-bf05-405d-8023-03550ce79548 | testvm03 | i-2-9-VM      |       2 |            2 | Running | PowerOn     |
| 10 | 4ff51ad8-cf79-4ef9-9a96-6a2bc1b58329 | testvm05 | i-2-10-VM     |       1 |            1 | Running | PowerOn     |
| 11 | ace7067a-2772-432d-9fd3-6d652551d78e | testvm06 | i-2-11-VM     |       1 |            1 | Running | PowerOn     |
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
6 rows in set (0.00 sec)

Host 2 in Maintenance =>

mysql> SELECT id, uuid, name, status, resource_state FROM cloud.host WHERE type = 'Routing' AND removed IS NULL;
+----+--------------------------------------+------------------------------------------+--------+----------------+
| id | uuid                                 | name                                     | status | resource_state |
+----+--------------------------------------+------------------------------------------+--------+----------------+
|  1 | dfa467a0-fadf-4cfb-ad36-cdbfa57f0e17 | ref-trl-10139-k-Mr8-suresh-anaparti-kvm1 | Up     | Enabled        |
|  2 | d0463494-995c-463a-9d4b-72eb37dca9be | ref-trl-10139-k-Mr8-suresh-anaparti-kvm2 | Up     | Maintenance    |
|  3 | 69054cd3-296e-4040-a3e9-7889274fde63 | ref-trl-10139-k-Mr8-suresh-anaparti-kvm3 | Up     | Enabled        |
|  4 | cd369b58-72a1-46f1-b5ac-158c2717776e | ref-trl-10139-k-Mr8-suresh-anaparti-kvm4 | Up     | Enabled        |
+----+--------------------------------------+------------------------------------------+--------+----------------+
4 rows in set (0.00 sec)

mysql> SELECT id, uuid, name, instance_name, host_id, last_host_id, state, power_state FROM cloud.vm_instance WHERE type = 'User' AND removed IS NULL;
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
| id | uuid                                 | name     | instance_name | host_id | last_host_id | state   | power_state |
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
|  4 | a5ec3d7d-aca5-4c20-b682-55f5ebacc8e3 | testvm01 | i-2-4-VM      |       1 |            1 | Running | PowerOn     |
|  6 | 791dec0a-cb68-4e22-a84d-1e0b76950766 | testvm02 | i-2-6-VM      |       4 |            4 | Running | PowerOn     |
|  7 | b5124b1e-b28f-4124-a7c3-8b268aa95188 | testvm04 | i-2-7-VM      |       1 |            2 | Running | PowerOn     |
|  9 | 7dc7aa3d-bf05-405d-8023-03550ce79548 | testvm03 | i-2-9-VM      |       1 |            2 | Running | PowerOn     |
| 10 | 4ff51ad8-cf79-4ef9-9a96-6a2bc1b58329 | testvm05 | i-2-10-VM     |       1 |            1 | Running | PowerOn     |
| 11 | ace7067a-2772-432d-9fd3-6d652551d78e | testvm06 | i-2-11-VM     |       1 |            1 | Running | PowerOn     |
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
6 rows in set (0.00 sec)

Host 4 in Maintenance =>

mysql> SELECT id, uuid, name, status, resource_state FROM cloud.host WHERE type = 'Routing' AND removed IS NULL;
+----+--------------------------------------+------------------------------------------+--------+----------------+
| id | uuid                                 | name                                     | status | resource_state |
+----+--------------------------------------+------------------------------------------+--------+----------------+
|  1 | dfa467a0-fadf-4cfb-ad36-cdbfa57f0e17 | ref-trl-10139-k-Mr8-suresh-anaparti-kvm1 | Up     | Enabled        |
|  2 | d0463494-995c-463a-9d4b-72eb37dca9be | ref-trl-10139-k-Mr8-suresh-anaparti-kvm2 | Up     | Maintenance    |
|  3 | 69054cd3-296e-4040-a3e9-7889274fde63 | ref-trl-10139-k-Mr8-suresh-anaparti-kvm3 | Up     | Enabled        |
|  4 | cd369b58-72a1-46f1-b5ac-158c2717776e | ref-trl-10139-k-Mr8-suresh-anaparti-kvm4 | Up     | Maintenance    |
+----+--------------------------------------+------------------------------------------+--------+----------------+
4 rows in set (0.00 sec)

mysql> SELECT id, uuid, name, instance_name, host_id, last_host_id, state, power_state FROM cloud.vm_instance WHERE type = 'User' AND removed IS NULL;
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
| id | uuid                                 | name     | instance_name | host_id | last_host_id | state   | power_state |
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
|  4 | a5ec3d7d-aca5-4c20-b682-55f5ebacc8e3 | testvm01 | i-2-4-VM      |       1 |            1 | Running | PowerOn     |
|  6 | 791dec0a-cb68-4e22-a84d-1e0b76950766 | testvm02 | i-2-6-VM      |       1 |            4 | Running | PowerOn     |
|  7 | b5124b1e-b28f-4124-a7c3-8b268aa95188 | testvm04 | i-2-7-VM      |       1 |            2 | Running | PowerOn     |
|  9 | 7dc7aa3d-bf05-405d-8023-03550ce79548 | testvm03 | i-2-9-VM      |       1 |            2 | Running | PowerOn     |
| 10 | 4ff51ad8-cf79-4ef9-9a96-6a2bc1b58329 | testvm05 | i-2-10-VM     |       1 |            1 | Running | PowerOn     |
| 11 | ace7067a-2772-432d-9fd3-6d652551d78e | testvm06 | i-2-11-VM     |       1 |            1 | Running | PowerOn     |
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
6 rows in set (0.00 sec)

Host 1 in Maintenance =>

mysql> SELECT id, uuid, name, status, resource_state FROM cloud.host WHERE type = 'Routing' AND removed IS NULL;
+----+--------------------------------------+------------------------------------------+--------+----------------+
| id | uuid                                 | name                                     | status | resource_state |
+----+--------------------------------------+------------------------------------------+--------+----------------+
|  1 | dfa467a0-fadf-4cfb-ad36-cdbfa57f0e17 | ref-trl-10139-k-Mr8-suresh-anaparti-kvm1 | Up     | Maintenance    |
|  2 | d0463494-995c-463a-9d4b-72eb37dca9be | ref-trl-10139-k-Mr8-suresh-anaparti-kvm2 | Up     | Maintenance    |
|  3 | 69054cd3-296e-4040-a3e9-7889274fde63 | ref-trl-10139-k-Mr8-suresh-anaparti-kvm3 | Up     | Enabled        |
|  4 | cd369b58-72a1-46f1-b5ac-158c2717776e | ref-trl-10139-k-Mr8-suresh-anaparti-kvm4 | Up     | Maintenance    |
+----+--------------------------------------+------------------------------------------+--------+----------------+
4 rows in set (0.00 sec)

mysql> SELECT id, uuid, name, instance_name, host_id, last_host_id, state, power_state FROM cloud.vm_instance WHERE type = 'User' AND removed IS NULL;
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
| id | uuid                                 | name     | instance_name | host_id | last_host_id | state   | power_state |
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
|  4 | a5ec3d7d-aca5-4c20-b682-55f5ebacc8e3 | testvm01 | i-2-4-VM      |       3 |            1 | Running | PowerOn     |
|  6 | 791dec0a-cb68-4e22-a84d-1e0b76950766 | testvm02 | i-2-6-VM      |       3 |            1 | Running | PowerOn     |
|  7 | b5124b1e-b28f-4124-a7c3-8b268aa95188 | testvm04 | i-2-7-VM      |       3 |            1 | Running | PowerOn     |
|  9 | 7dc7aa3d-bf05-405d-8023-03550ce79548 | testvm03 | i-2-9-VM      |       3 |            1 | Running | PowerOn     |
| 10 | 4ff51ad8-cf79-4ef9-9a96-6a2bc1b58329 | testvm05 | i-2-10-VM     |       3 |            1 | Running | PowerOn     |
| 11 | ace7067a-2772-432d-9fd3-6d652551d78e | testvm06 | i-2-11-VM     |       3 |            1 | Running | PowerOn     |
+----+--------------------------------------+----------+---------------+---------+--------------+---------+-------------+
6 rows in set (0.00 sec)

How did you try to break this feature and the system with this change?

codecov · 2025-11-13T09:21:55Z

Codecov Report

❌ Patch coverage is 15.38462% with 33 lines in your changes missing coverage. Please review.
✅ Project coverage is 16.24%. Comparing base (243f566) to head (9b3f526).
⚠️ Report is 77 commits behind head on 4.20.

Files with missing lines	Patch %	Lines
...om/cloud/deploy/DeploymentPlanningManagerImpl.java	16.21%	28 Missing and 3 partials ⚠️
...java/com/cloud/ha/HighAvailabilityManagerImpl.java	0.00%	1 Missing ⚠️
...n/java/com/cloud/resource/ResourceManagerImpl.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               4.20   #12062      +/-   ##
============================================
+ Coverage     16.18%   16.24%   +0.06%     
- Complexity    13301    13401     +100     
============================================
  Files          5657     5658       +1     
  Lines        498473   499275     +802     
  Branches      60501    60601     +100     
============================================
+ Hits          80663    81128     +465     
- Misses       408830   409100     +270     
- Partials       8980     9047      +67

Flag	Coverage Δ
uitests	`4.03% <ø> (+0.02%)`	⬆️
unittests	`17.10% <15.38%> (+0.07%)`	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

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Copilot

Pull Request Overview

This PR fixes deployment planning logic for VMs with last host by ensuring the last host is considered only when it exists and is not in maintenance mode. When users explicitly request last host consideration and the host doesn't exist or is in maintenance, deployment now fails with a clear error message.

Key Changes:

Added validation to check if last host exists and is not in maintenance before attempting deployment
When ConsiderLastHost is explicitly set to "true", deployment now fails with an exception if the last host is unavailable
Fixed minor logging inconsistencies and typos across multiple files

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
server/src/main/java/com/cloud/deploy/DeploymentPlanningManagerImpl.java	Core logic changes to validate last host existence and maintenance state, with error handling when explicitly requested; also fixed a typo in a log message
server/src/main/java/com/cloud/ha/HighAvailabilityManagerImpl.java	Minor log message formatting improvements for migration attempts (removed extra space)
server/src/main/java/com/cloud/resource/ResourceManagerImpl.java	Updated log message format for consistency during maintenance operations

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server/src/main/java/com/cloud/deploy/DeploymentPlanningManagerImpl.java

server/src/main/java/com/cloud/ha/HighAvailabilityManagerImpl.java

sureshanaparti · 2025-11-13T09:52:03Z

@blueorangutan package

blueorangutan · 2025-11-13T09:54:05Z

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

sureshanaparti · 2025-11-13T10:06:03Z

@blueorangutan package

blueorangutan · 2025-11-13T10:08:05Z

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

blueorangutan · 2025-11-13T12:29:33Z

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 15747

sureshanaparti · 2025-11-14T05:40:55Z

@blueorangutan test

blueorangutan · 2025-11-14T05:42:04Z

@sureshanaparti a [SL] Trillian-Jenkins test job (ol8 mgmt + kvm-ol8) has been kicked to run smoke tests

server/src/main/java/com/cloud/deploy/DeploymentPlanningManagerImpl.java

sureshanaparti · 2025-11-14T10:35:42Z

@blueorangutan package

blueorangutan · 2025-11-14T10:36:03Z

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

blueorangutan · 2025-11-14T11:50:10Z

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 15770

DaanHoogland

clgtm, only possible snatch may be afinity, but on the other hand, it is only a “when all else fails” scenario. We should be good like this.

server/src/main/java/com/cloud/deploy/DeploymentPlanningManagerImpl.java

blueorangutan · 2025-11-14T21:05:14Z

[SF] Trillian test result (tid-14829)
Environment: kvm-ol8 (x2), zone: Advanced Networking with Mgmt server ol8
Total time taken: 52273 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr12062-t14829-kvm-ol8.zip
Smoke tests completed. 141 look OK, 0 have errors, 0 did not run
Only failed and skipped tests results shown below:

Test	Result	Time (s)	Test File

- Consider last host when it is not in maintenance - Fail deployment when user requests for last host consideration and last host doesn't exists or in maintenance

sureshanaparti · 2025-12-02T10:47:02Z

@blueorangutan package

blueorangutan · 2025-12-02T10:48:07Z

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

blueorangutan · 2025-12-02T12:09:06Z

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 15887

sureshanaparti · 2025-12-03T10:10:30Z

@blueorangutan test

blueorangutan · 2025-12-03T10:12:03Z

@sureshanaparti a [SL] Trillian-Jenkins test job (ol8 mgmt + kvm-ol8) has been kicked to run smoke tests

blueorangutan · 2025-12-04T02:32:01Z

[SF] Trillian test result (tid-14901)
Environment: kvm-ol8 (x2), zone: Advanced Networking with Mgmt server ol8
Total time taken: 55740 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr12062-t14901-kvm-ol8.zip
Smoke tests completed. 141 look OK, 0 have errors, 0 did not run
Only failed and skipped tests results shown below:

Test	Result	Time (s)	Test File

server/src/main/java/com/cloud/deploy/DeploymentPlanningManagerImpl.java

DaanHoogland · 2026-01-12T10:08:14Z

@sureshanaparti @abh1sar does this need (any kind of) testing ?

borisstoyanov · 2026-01-26T13:28:21Z

@sureshanaparti are you planning to address the latest comments from @abh1sar ?

sureshanaparti · 2026-01-27T12:21:19Z

@blueorangutan package

blueorangutan · 2026-01-27T12:22:04Z

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

blueorangutan · 2026-01-27T13:38:17Z

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 16564

sureshanaparti linked an issue Nov 13, 2025 that may be closed by this pull request

[BUG] VMs stopped after automatic selection of hosts in maintenance for VM migrations away from hosts #12045

Open

sureshanaparti requested a review from Copilot November 13, 2025 09:15

Copilot started reviewing on behalf of sureshanaparti November 13, 2025 09:15 View session

Copilot finished reviewing on behalf of sureshanaparti November 13, 2025 09:18

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sureshanaparti force-pushed the vm-deployment-with-last-host-improvements branch from 5ec03de to 6aa828b Compare November 13, 2025 10:05

sureshanaparti marked this pull request as ready for review November 14, 2025 05:40

sureshanaparti changed the title ~~Deployment plan fixes for VM with last host~~ Deployment plan fixes for VM with last host, and last host in maintenance Nov 14, 2025

DaanHoogland reviewed Nov 14, 2025

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sureshanaparti requested a review from nvazquez November 14, 2025 09:05

sureshanaparti requested a review from DaanHoogland November 14, 2025 10:36

DaanHoogland approved these changes Nov 14, 2025

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nvazquez reviewed Nov 14, 2025

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server/src/main/java/com/cloud/deploy/DeploymentPlanningManagerImpl.java Outdated Show resolved Hide resolved

server/src/main/java/com/cloud/deploy/DeploymentPlanningManagerImpl.java Outdated Show resolved Hide resolved

sureshanaparti added 5 commits December 2, 2025 16:16

Deployment plan fixes for VM with last host

a10218d

- Consider last host when it is not in maintenance - Fail deployment when user requests for last host consideration and last host doesn't exists or in maintenance

changes

214d58d

msg update with vm/host name

cb05995

address comments

47154ae

Exclude last hosts with error or degraded state as well, for vm deploy

51cf988

sureshanaparti force-pushed the vm-deployment-with-last-host-improvements branch from da2b6d9 to 51cf988 Compare December 2, 2025 10:46

sureshanaparti requested a review from nvazquez December 2, 2025 10:46

DaanHoogland added this to the 4.20.3 milestone Dec 29, 2025

abh1sar reviewed Jan 12, 2026

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server/src/main/java/com/cloud/deploy/DeploymentPlanningManagerImpl.java Outdated Show resolved Hide resolved

server/src/main/java/com/cloud/deploy/DeploymentPlanningManagerImpl.java Outdated Show resolved Hide resolved

borisstoyanov self-assigned this Jan 26, 2026

sureshanaparti added the status:needs-testing label Jan 27, 2026

review changes

9b3f526

Deployment plan fixes for VM with last host, and last host in maintenance #12062

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Deployment plan fixes for VM with last host, and last host in maintenance #12062

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Description

Types of changes

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

Bug Severity

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

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Pull Request Overview

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sureshanaparti commented Nov 13, 2025 •

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